Landsat Acronyms
Learn the acronyms used in Landsat references.
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| 0-9 | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
| 0R | Zero Reformatted Data |
| 3DEP | 3D Elevation Program |
| 6H | Band 6 - high gain |
| 6L | Band 6 - low gain |
| 6S | Second Simulation of a Satellite Signal in the Solar Spectrum |
| A&A | Authorization and Authentication Archive and Access Associate Administrator |
| A&E | Access and Exploration |
| A&P | Archive and Production |
| A&P OPS | Archive and Production Operations |
| A/D | Analog/Digital |
| AA | Active Archive Alternative Analysis Associated Administrator |
| AAC | Archive Advisory Committee |
| AADP | Active Archive Data Package |
| AAG | Association of American Geographers |
| AAOS | Albers Automatic Ordering System |
| AAR | After-Action Report |
| AAS | Anomaly Analysis Subsystem |
| AATHom | Average Across-Track Homogeneity |
| ABI | Advanced Baseline Imager |
| ABML | As-Built Materials List |
| ABPL | As-Built Parts List |
| ABS | Absolute |
| AC | Alternate Current Archive Cache Actual Cost |
| ACA | Antenna Control Assembly |
| ACCA | Automated Cloud Cover Assessment Actual Cloud Cover Average |
| ACCESS | Advancing Collaborative Connections for Earth System Science |
| ACIX | Atmospheric Correction Intercomparison eXercise |
| ACK | Acknowledgement |
| ACL | Access Control List |
| ACM | AWS Certificate Manager |
| ACQ | Acquired Scenes Report |
| ACRES | Australian Center for Remote Sensing |
| ACS | Attitude Control System |
| ACIO | Associate Chief Information Officer |
| ACSG | Atmospheric Composition Subgroup |
| ACSLS | Automated Cartridge System Library Software |
| ACTHom | Average Cross-Track Homogeneity |
| ACU | Antenna Control Unit |
| ACWP | Actual Cost of Work Performed |
| AD | Active Directory Associate Director |
| ADA | Angular Displacement Assembly Attitude Displacement Assembly |
| ADAT | Application and Data Assessment |
| ADC | After DC Restore Ancillary Data Corrector Analog-to-Digital Conversion |
| ADD | Algorithm Description Document |
| ADF | Ancillary Data File |
| ADFS | Active Directory Federation Services |
| ADIC | Advanced Digital Information Corporation |
| ADM | Administrative Message |
| ADML | As-Designed Materials List |
| ADP | Ancillary Data Preprocessor |
| ADPL | As-Designed Parts List |
| ADS | Attitude Displacement Sensors Angular Displacement Sensor Archive Data Stager |
| ADSA | Attitude Displacement Sensor Assembly |
| ADVP | Algorithm Development and Verification Plan |
| AE | Archive Element |
| AEA | Albers Equal Area |
| AEC | Aerosol Extinction Coefficient |
| AEM | Auxiliary Electronics Module |
| AERONET | Aerosol Robotic Network |
| AES | Advanced Encryption Standard |
| AETD | Applied Engineering and Technology Directorate |
| AFB | United States Air Force Base |
| AFM | Anomalous Frame Manager |
| AFOLU | Agriculture, Forestry, and Other Land Use |
| AFOV | Angular Field of View |
| AFWA | Air Force Weather Agency |
| AGC | Automatic Gain Control |
| AGE | Automated Ground Equipment |
| AGRI | Australian Geographic Reference Image |
| AGS | Alaska Ground Station |
| AGU | American Geophysical Union |
| AI | Artificial Intelligence |
| AI&T | Assembly, Integration, and Test |
| AIM | Algorithm Integration Meeting |
| AIP | Archival Information Package Annex Implementation Plan |
| AIS | Automated Information Security |
| AIT | Algorithm Implementation Team |
| AJAX | Asynchronous Java Script and XML |
| ALG | Application Layer Gateway |
| ALI | Advanced Land Imager |
| ALIAS | Advanced Land Image Assessment System |
| AM | Artifact Mask or Analytical Modeler |
| AMI | Amazon Machine Image |
| AMP | Allocation Management Planner Asset Management Plan |
| AMQP | Advanced Message Queuing Protocol |
| AMTS | Asset Management Tracking System |
| AN | Ascending Node |
| ANC | Ancillary File |
| ANG | Angle band coefficients file extension |
| ANGCF | Angle Coefficient |
| ANGSTT | Australian National Ground Segment Technical Team |
| ANN | Annotation File |
| ANS | Alerts and Notifications |
| ANSI | American National Standards Institute |
| ANSS | Advanced National Seismic System |
| ANTLR | Another Tool for Language Recognition |
| AO | Authorization Official Authorizing Official |
| AOD | Aerosol Optical Depth |
| AOI | Area of Interest |
| AOS | Acquisition of Signal Arrival On-Site Automated Ordering System Advanced Orbiting Systems |
| AOT | Aerosol Optical Thickness |
| APAC | Acquisition Procurement Advisory Council |
| API | Application Programming Interface |
| APID | Application Identification |
| APMC | Agency Program Management Council |
| APO | Accountable Property Officer |
| APU | Accuracy, Precision, and Uncertainty |
| AQ | Advanced Queuing |
| AQPSK | Asynchronous Quadrature Phase Shift Keying |
| AR | Archive or Axial Ratio Acceptance Review Aquatic Reflectance |
| ARB | Architecture Review Board Anomaly Review Board |
| ARC | Advanced Research Computing |
| ARD | Analysis Ready Data |
| ARM | Atmospheric Radiation Measurement |
| ARN | Amazon Resource Name |
| ARP | Anomaly Resolution Plan |
| ARS | Agricultural Research Service |
| ART | Anomaly Resolution Team |
| AS | Archive Server |
| ASA | Archive Server Application Alice Springs [Station] Australia Australian Space Agency |
| ASB | Administrative Services Branch |
| ASC | Architecture Scorecard |
| ASCII | American Standard Code for Information Interchange |
| ASD | Analytical Spectral Devices, Inc. |
| ASGUI | Archive Server Graphical User Interface |
| ASHRAE | American Society of Heating, Refrigeration and Air-Conditioning |
| ASIC | Application Specific Integrated Circuit |
| ASIC3 | Achieving Satellite Instrument Calibration for Climate Change |
| ASL | Amazon States Language |
| ASM | Attached Sync Marker Automatic Storage Management |
| ASN | Alice Springs Ground Station Australian Network |
| ASPRS | American Society of Photogrammetry and Remote Sensing |
| ASQC | American Society for Quality Control |
| AST | Active Scan Time, Architecture Study Team |
| ASTER | Advanced Spaceborne Thermal Emission and Reflection |
| ASTER GED | Advanced Spaceborne Thermal Emission and Reflection Radiometer Global Emissivity Dataset |
| ASTM | American Society for Testing of Materials |
| ASW | Astrodynamics Support Workstation |
| AT | Along Track |
| AT-ACCA | Artificial Thermal Automated Cloud Cover Assessment |
| ATBD | Algorithm Theoretical Basis Document |
| ATCS | Absolute Time Command Sequence |
| ATHom | Along-Track Homogeneity |
| ATK | Alliant Techsystems |
| ATL | Automated Tape Library |
| ATM | Asynchronous Transfer Mode |
| ATO | Authority to Operate |
| ATP | Authority to Proceed |
| ATRAN | Atmospheric Transmittance Layer |
| ATS | Absolute Time Sequence Automatic Transfer Switch |
| ATT | Authorization to Test |
| AU | Astronomical Units |
| AUI | Analyst User Interface |
| AVHRR | Advanced Very High Resolution Radiometer |
| AVI | Audio Video Interleave |
| AVIRIS | Airborne Visible / Infrared Imaging Spectrometer |
| AVPD | Avtec Programmable Demodulator |
| AVT | Algorithm Verification Test |
| AWESH | Automated Water Extent Shadow |
| AWG | Architecture Working Group |
| AWiFS | Advanced Wide-Field Sensor |
| AWM | Analytical Workspace Manager |
| AWS | Amazon Web Services |
| B&A | Billing & Accounting |
| B1 | Build 1 |
| B2B | Band-to-Band |
| B2BCal | Band-to-Band Calibration |
| BA | Billing and Accounting Burned Area |
| BAA | Broad Agency Announcement |
| BAC | Budget at Completion |
| BAD | Block Address Data |
| BAE | British Aerospace Engineering Company |
| BAI | Burned Area Index |
| BAER | Burned Area Emergency Response |
| BASIS+ | Budget and Science Information System Plus |
| BBC | Blackbody Calibrator |
| BBFTP | Large File Transfer Protocol |
| BBOX | Bounding Box |
| BC | Best Case |
| BCD | Binary-Coded Decimal |
| BCH | Bose-Chaudhuri-Hocquenghem Error Detection and Correction |
| BCISO | Bureau Chief Information Security Officer |
| BCR | Baseline Change Request |
| BCWP | Budgeted Cost of Work Performed |
| BCWS | Budgeted Cost of Work Scheduled |
| BD | Band |
| BDA | Bulk Download Application |
| BDWA | Bulk Download Web Application |
| BER | Bit Error Rate |
| BERT | Bit Error Rate Test |
| BG | Build Guide |
| BGF | Build GPR Files |
| BI | Bilinear Interpolation |
| BIA | Business Impact Analysis Business Impact Assessment Bureau of Indian Affairs |
| BIFF | Bad Interval File Fix |
| BIH | Bureau International de l'Heure |
| BIL | Band Interleaved by Line |
| BIMSTEC | Bay of Bengal Initiative for Multi-Sectoral Technical and Economic Cooperation |
| BIP | Band Interleaved by Pixel |
| BIP2 | Band Interleaved by Pixel Pair |
| BIS | Bureau of Industry and Security |
| BITSM | Bureau Information Technology Security Manager |
| BJC | Beijing, Peoples Republic of China Ground Station |
| BKT | Bangkok, Thailand Ground Station |
| BLM | Bureau of Land Management |
| bLMOC | Backup Landsat Multi-Satellite Operations Center |
| BME | Brouwer-Lyddane Mean Element |
| BMO | Business Management Office |
| BMOC | Backup Mission Operations Center |
| BMOE | Backup Mission Operations Element |
| BN | Background Noise |
| BNC | Bayonet Neill-Concelman |
| BOC | Budget Object Class |
| BOE | Basis of Estimate |
| BOM | Bill of Materials |
| BP | Bias Parameter Burn Probability |
| BPA | Blanket Purchase Agreement |
| BPAL | Best Practices Asset Library |
| BPDU | Bitstream Protocol Data Unit |
| BPF | Bias Parameter File |
| BPFAOS | BPF Automatic Ordering System |
| BPG | Bias Parameter Generator |
| bps | Bits per Second |
| BPSK | Biphase Shift Keying |
| BQA | Quality Assessment Band |
| BRAA | Band Registration Accuracy Assessment |
| BRAT | Bit Rot Assessment Tool |
| BRDF | Bidirectional Reflectance Distribution Function |
| BRDF-n | Normalized Bidirectional Reflectance Distribution Function |
| BRDF-s | Spectral Bidirectional Reflectance Distribution Function |
| BRF | Bidirectional Reflectance Factor |
| BRIDGE | Big Reprocessing Initiative Data Gap Environment |
| BRTS | Bilateration Ranging Transponder System |
| BSP | Best Security Practices |
| BSQ | Band Sequential |
| BSSC | Bit Synchronizer / Signal Conditioner |
| BSTAR | Drag-Related Parameter in the NORAD Two-Line Element |
| BSU | Baseband Switching Unit |
| BT | Brightness Temperature |
| BTC | Bench Test Cooler |
| BTF | Ball Test Facility |
| BTI | Blank Tape Interface |
| BTL | Boot Loader |
| BUI | Bumper mode User Interface |
| BUTST | Bureau Unix Technical Support Team |
| BVR | Boast Voltage Regulator |
| BWTST | Bureau Windows Technical Support Team |
| C | Centigrade |
| C&A | Certification and Accreditation |
| C&DH | Command and Data Handling |
| C&T | Command and Telemetry |
| C&T DB | Command and Telemetry Database |
| C0 | Coefficient 0 |
| C1 | Coefficient 1 Collection 1 |
| C1L1 | Collection 1 Level 1 |
| C1L1RT | Collection 1 Level 1 Real Time |
| C1L2 | Collection 1 Level 2 |
| C1L2Alb | Collection 1 Level 2 Albers |
| C2 | Coefficient 2 or Collection 2 |
| C2L1 | Collection 2 Level 1 |
| C2L1RT | Collection 2 Level 1 Real Time |
| C2L2 | Collection 2 Level 2 |
| C2L2Alb | Collection 2 Level 2 Albers |
| C3S | NPOESS Command, Control, and Communications Segment |
| Ca | Chlorophyll-a |
| CA | Conjunction Assessment Control Account Cost Account |
| CAB | Change Advisory Board |
| CADU | Channel Access Data Unit |
| CAGE | Commercial and Government Entity |
| CAL | Calibration Data |
| Cal/Val | Calibration/Validation |
| CALCON | Characterization and Radiometric Calibration for Remote Sensing Annual Meeting |
| CalCR | Calibration Collection Request |
| CalManWG | Calibration Maneuver Working Group |
| CALTest | Calibration/Validation Test |
| CAM | Control Account Manager Command Authorization Meeting Communications Security Account Manager |
| CAMEL | Combined ASTER MODIS Emissivity over Land |
| CAOS | Collection Automatic Ordering System |
| CAP | Cartridge Access Port Control Account Plan |
| CAPE | Collection Activity Planning Element |
| CAPERD | CAPE Requirements Document |
| CARA | Conjunction Assessment Risk Analysis |
| CARD | Constraints and Restrictions Document |
| CARD4L | CEOS ARD for Land |
| CASA | Cloud and Cloud Shadow Assessment |
| CaTT | Command and Telemetry Transceiver |
| CA-WAD | Cost Account Work Authorization Document |
| CBA | Cost-Benefit Analysis |
| CBB | Contract Budget Base |
| CBC | Cipher Block Chaining |
| CBERS | China-Brazil Earth Resources Satellite |
| CBG | Configuration and Build Guide |
| CBLCM | Chesapeake Bay Land Change Model |
| CBN | Cuiaba [Brazil] Earth Station |
| CBS | Commission for Basic Systems |
| CC | Cubic Convolution Computer Compatible Tape Cloud Cover |
| CCA | Cloud Cover Assessment Clinger-Cohen Act |
| C-CAP | Coastal Change Analysis Program |
| CCB | Configuration Control Board |
| CCD | Charge-Coupled Device Continuous Change Detection |
| CCDC | Continuous Change Detection and Classification |
| CCE | Cryocooler Electronics |
| CCI | Controlled Cryptographic Item |
| CCL | Commerce Control List |
| CCM | Cloud Cover Manager |
| CCMC | Community Coordinated Modeling Center |
| CCMS | Combined Cache Management Subsystem |
| CCOH | Cost Center Overhead |
| CCP | Configuration Change Process Contamination Control Process Cloud Cover Prediction |
| CCR | Configuration Change Request |
| CCRS | Canada Center for Remote Sensing |
| CCS | COI Cleanup System Confirmed Contact Schedule Constellation Coordination System |
| CCSDS | Consultative Committee for Space Data Systems |
| CCT | Computer Compatible Tape Credit Card Transaction |
| CCU | Charge Control Unit |
| CD | Change Directory Compact Disk Cooler Door |
| CDB | Centralized Database |
| CDBS | Centralized Database System |
| CDE | Common Desktop Environment |
| CDED | Canadian Digital Elevation Dataset |
| CDEM | Canadian Digital Elevation Model |
| CDH | Command and Data Handling |
| CDI | Capture Device Identifier |
| CDIST | Distance to Cloud |
| CDL | Cropland Data Layer |
| CDLR | Command Data Loss Report |
| CDM | Conjunction Data Message |
| CDMS | Carrier Doppler Measurement System |
| CDN | Content Delivery Network |
| CDR | Critical Design Review Calibration Data Record Climate Data Records |
| CDRL | Contract Data Requirements List Command Data Loss Report |
| CD-ROM | Compact Disk-Read Only Memory |
| CDS | Coded Data Segment Comprehensive Discrepancy System |
| CDT | Central Daylight Time CPF Distribution Tool |
| CE | Circular Error Cognizant Employee |
| CE90 | Circular Error 90 |
| CEC | Cation Exchange Capacity |
| CED | Confirmed Event Details |
| CentOS | Community Enterprise Operating System |
| CEOS | Committee on Earth Observation Satellites |
| CER | Cost Estimating Relationship |
| CERR | Critical Event Readiness Review |
| CERT | Community Emergency Response Team |
| CES | Cost Element Structure |
| CF | Correction Factor Cloud Fraction Cloud Formation |
| CFC | Contact Forecast Confirmation Cloud Fraction Climatology |
| CFDP | CCSDS File Delivery Protocol |
| CFL | Conflict Notice |
| CFMask | C version of Fmask |
| CFP | Cold Focal Plane |
| CFPA | Cold Focal Plane Array Cold Focal Plane Assembly |
| CFR | Code of Federal Regulations Contact Forecast Request |
| CFT | Cloud Formation Template |
| CGB | Calculated Gains and Biases |
| CGI | Common Gateway Interface |
| CGMS | Coordination Group for Meteorological Satellites |
| CGSe | CuGaSe2 |
| CHIME | Copernicus Hyperspectral Imaging Mission for the Environment |
| CHS | Cloud Hosting Solutions |
| CI | Configuration Item Continuous Integration |
| CI/CD or CICD | Continuous Integration / Continuous Deployment |
| CIA | Confidentiality, Integrity, and Availability |
| CIB | Controlled Image Base |
| CIC | Computer Interrupt Code |
| CIDR | Classless Inter-Domain Routing CRSSP Imagery Derived Requirements |
| CIFS | Common Internet File System |
| CIIL | Configuration Item Identifier List |
| CIL | Critical Items List |
| CIO | Chief Information Officer |
| CIRC | Computer Incident Reporting Center Compact Infrared Camera |
| CIS | Center for Information Security |
| CISO | Chief Information Security Officer |
| CISSP | Certified Information Systems Security Professional |
| CITT | Center Information Technology Team |
| CIU | Controls Interface Unit |
| CLASS | NOAA Comprehensive Large Array-data Stewardship System |
| CLCW | Command Link Control Word |
| CLI | Command Line Interface |
| CLOB | Character Large Object |
| CLR | Combined Labor Rate Contractor Labor Rate |
| CLTU | Command Link Transmission Unit |
| CLU | Climate and Land Use |
| cm | Centimeter |
| CM | Configuration Management Center of Mass |
| CMA | Climate Modeling Grid - Aerosol Chinese Meteorological Administration |
| CMB | Change Management Board |
| CMC | Center Management Council |
| CMD | Command |
| CME | Coronal Mass Ejection |
| CMG | Climate Modeling Grid |
| CMIP | Cloud and Moisture Imagery Product |
| CMIPC | Cloud and Moisture Imagery Product CONUS |
| CMIPF | Cloud and Moisture Imagery Product Full Disk |
| CMIX | Cloud Masking Intercomparison eXercise |
| CMM | Capability Maturity Model |
| CMMI | Capability Maturity Model Integration |
| CMO | Configuration Management Office |
| CMOS | Complementary Metal Oxide Semiconductor |
| CMP | Configuration Management Plan Change Management Plan |
| CMS | Content Management System Code Sync Marker |
| CN | Coherent Noise |
| CND | Could-Not-Duplicate |
| CNES | Centre National d’Etudes Spatiales |
| CNN | Convolutional Neural Network |
| CNNS | Committee on National Security Service |
| CNR | Carrier-to-Noise Ratio |
| CO | Contract Officer Content Owner |
| COA | Cordoba, Argentina Ground Station Change of Allocation |
| COAC | Captured Opportunity Assessment Code |
| COAST | Development of Coastal Study Team |
| COC | Certificate of Completion Cost of Consequence |
| COFUR | Cost of Fulfilling a User Request |
| COG | Center of GravityContinuity of Government Cloud Optimized GeoTIFF |
| CoGenT | Combination Generation Tool |
| COI | Common Order Interface Calibration/Validation Order Interface |
| COIGUI | Common Order Interface Graphical User Interface |
| COLA | Collision Avoidance |
| COMM | Communications Subsystem |
| COMSEC | Communications Security |
| Con Ops | Concept of Operations |
| CONAE | Commission Nacional De Actividades Espaciales |
| CoNED | Coastal National Elevation Database |
| CONUS | Continental United States Conterminous United States |
| COOP | Continuity of Operations |
| COP | Contingency Operating Procedure |
| COR | Contracting Officer Representative Cost of Reproduction |
| CORS | Cross-Origin Resource Sharing |
| COS | Cosine |
| COST | Calibration Operations Scheduling Tool |
| COTR | Contracting Officer’s Technical Representative |
| COTS | Commercial Off-The-Shelf |
| COUA | Certified Organizational Unit Administrator |
| CP | Calibration Parameter or Change Proposal |
| CPAF | Cost Plus Award Fee |
| CPAW | Collection Planning and Analysis Workstation |
| CPC | Contingency Plan Coordinator |
| CPCI | Compact Peripheral Component Interconnect |
| CPEI | Computer Program End Items |
| CPEX-CV | Convective Processes Experiment – Cabo Verde |
| CPF | Calibration Parameter File |
| CPFF | Cost Plus Fixed Fee |
| CPI | Cost Performance Index |
| CPIC | Capital Planning and Investment Control |
| CPM | Critical Path Methodology |
| CPO | Custodial Property Officer |
| CPR | Cost Performance Report |
| CPR1 | Cost Performance Report 1 |
| CPR4 | Cost Performance Report 4 |
| CPR5 | Cost Performance Report 5 |
| CPS | Calibration Parameter Management and Testing Subsystem |
| CPT | Comprehensive Performance Test |
| CPU | Central Processing Unit |
| CR | Central Repository Controlled Repository Change Request Contingency Reserve Carriage Return Confirmation Review Command Routing |
| CR1 | Computer Room 1 |
| CR1MSS | Computer Room 1 Mass Storage System |
| CR2 | Computer Room 2 |
| CR2IT | Centralized Repository 2 Integration and Test |
| CR2OPS | Centralized Repository 2 Operations |
| CR2ST | Centralized Repository 2 System Test |
| CR3 | Computer Room 3 |
| CRADA | Cooperative Research and Development Agreement |
| CRaM | Combined Radiometric Model |
| CRESDA | China Center for Resources Satellite Data and Applications |
| CRC | Cyclic Redundancy Check Cyclic Redundancy Code |
| CRDEV | Central Repository Development |
| CRI | Collection Request Interface |
| CRIT | Central Repository Integration and Test |
| CRM | Customer Relationship Management Continuous Risk Management |
| CRMP | Continuous Risk Management Plan |
| CRMT | Contingency Response Management Team |
| CRN | Climate Reference Network |
| CROPS | Central Repository Operations |
| CRS | CDF Retrieval Subsystem |
| CRSSGS | China Remote Sensing Satellite Ground Station |
| CRSSP | Commercial Remote Sensing Space Policy |
| CRST | Central Repository System Test |
| CRT | Command, Ranging and Telemetry |
| CRTEST | Central Repository Test |
| CRV | Combined Reference Value |
| CS | Customer Service |
| CSA | Configuration Status Accounting Commissioning Support Area Canadian Space Agency |
| CSAM | Cybersecurity Assessment Management |
| CSC | Computer Software Component |
| CSCI | Computer Software Configuration Item |
| CSDA | Commercial Smallsat Data Acquisition Program |
| CSDGM | Content Standard for Digital Geospatial Metadata |
| CSI | Container Storage Interface |
| CSIRT | Computer Security Incident Report Team |
| CSIRO | Commonwealth Scientific and Industrial Research Organization |
| CSIS | Control and Schedule Interface System |
| CSIR | Council for Scientific and Industrial Research |
| CSM | Code Sync Marker |
| CSMO | Chief Safety and Mission Assurance Officer |
| CSO | Communication Services Office Chief Safety and Mission Assurance Officer |
| CSOP | COMSEC Standard Operating Procedure |
| CSP | COMSEC Security Plan Cloud Service Provider |
| CSR | Capture Success Rate Capture Success Ratio Customer Service Representative Change System Request |
| CSRM | CHS Cloud Shared Responsibility Model |
| CSS | Cascading Style Sheet Central Security Service Core Science Systems Course Sun Sensor |
| CSU | Computer Software Units |
| CSV | Comma Separated Values |
| CT | Connectivity Test |
| CTB | Command and Telemetry Board |
| CTDiff | Cross-Track Difference |
| CTE | Calibration Test Equipment Compatibility Test Equipment Common Table Expression |
| CTHome | Cross-Track Homogeneity |
| CTP | Command and Telemetry Processors |
| CTS | Capture Transfer Subsystem Capture Transfer System |
| CTV | Compatibility Test Van |
| CUB | Cuiaba, Brazil Ground Station |
| CUI | CPF User Interface Controlled Unclassified Information |
| CV | Command Verification Cost Variance Coefficient of Variation |
| CV-5 | Calibration and Validation 5 |
| CV-7 | Calibration and Validation 7 |
| CVCDU | Coded Virtual Channel Data Unit |
| CVCM | Collected Volatile Condensable Material Collected Volatile Condensable Mass |
| CVDQA | Calibration Validation Data Quality Assurance |
| CVE | Calibration Validation Element |
| CVS | Concurrent Versions System |
| CVT | Calibration and Validation Team |
| CVTK | Calibration / Validation Toolkit |
| CVTKRD | Calibration and Validation Toolkit Requirements Document |
| CVWG | Calibration-Validation Working Group |
| CW | Continuous Wave Amazon Cloud Watch |
| CWL | Center Wavelength |
| CY | Contract Year |
| CyAN | Cyanobacteria Assessment Network |
| D&M | Development and Maintenance |
| D/C | Down Converter |
| D/L | Downlink |
| D1R | DMS Generate L1R |
| D3 | 50GB Data tape cartridge from StorageTek |
| DA | Document Administrator Document Amendment |
| DAAC | Distributed Active Archive Center |
| DaaS | Desktop as a Service |
| DACA | Days After Contract Award |
| DAE | Data Acquisition Element |
| DAF | Data Acquisition Facility |
| DAG | Database Administrator Guide Directed Acyclic Graph |
| DAM | Data Acquisition Manager Database for Analysis and Modeling |
| DAP | Data Acquisition Plan Data Acquisition Planner Digital Analytics Program |
| DAR | Data at Rest, Data Acquisition Request, Decision Analysis and Resolution |
| DART | Data Access Restriction Tool Decision Analysis and Resolution |
| DAS | Data and Applications Support |
| DASB | Direct Access S-Band |
| DAT | Data Access Tool |
| DAU | Defense Acquisition University |
| DB | Database or Data Block |
| dB | Decibel |
| dB/K | Decibel per Degree Kelvin |
| DBA | Database Administrator |
| DBaaS | Database as a Service |
| DBAR | Database Access Routines |
| DBCA | Database Configuration Assistant |
| DBCI | Database Configuration Item |
| DBDD | Database Design Description Database Description Document |
| dB-Hz | Decibel-Hertz |
| dBi | Decibel Above Isotropic |
| DBI | Database Interface |
| DBMS | Database Management System |
| DBS | Data Services Branch |
| dBW | Decibel Relative to 1 Watt |
| DC | Direct Current |
| DC&P | Data Capture and Processing Facility |
| DCAA | Defense Contract Audit Agency |
| DCC | Data Characterization Components Deep Convective Clouds |
| DCCB | DHF Configuration Control Board Development Configuration Control Board |
| DCE | Data Collection Event |
| DCG | DMS Generate Custom GCPLib |
| DCIM | Data Center Infrastructure Management |
| DCN | Document Control Number Document Change Notice |
| DCO | DMS Capture Order |
| DCOI | Data Center Optimization Initiative |
| DCP | Data Collection Planners Data Processing Components |
| DCPF | Data Capture & Processing Facility |
| DCR | Document Change Request |
| DCRS | Data Collection and Routing Subsystem Data Collection and Routing System |
| DCRSf | Data Collection and Routing Subsystem file router Data Collection and Routing System file router |
| DCRSi | Data Collection and Routing Subsystem interval router Digital Cassette Recorder System Incremental |
| DCRSUI | Data Collection and Routing Subsystem User Interface |
| DCS | Data Capture System or Data Characterization Subsystem Destination Control Statement Distributed Cache Service Data Center and Systems |
| DCT | Digital Cassette Tape |
| DCW | Data Collection Workbook |
| DDD | Displacement Damage Dose |
| DDI | DCS Data Ingest |
| DDL | Database Definition Language |
| DDOS | Distributed Denial of Service |
| DDR | Data Descriptor Record |
| DDRC | DPAS Design Reference Case |
| DDS | DCS Database Server Database Distribution Subsystem Data Distribution Service |
| DDT | DPAS Test Team |
| DDV | Dense Dark Vegetation |
| DE | Definitive Ephemeris |
| DEF | Definitive Ephemeris Product |
| Delta-I | Delta-Inclination |
| DEM | Digital Elevation Model |
| DEMIX | Digital Elevation Model Intercomparison eXperiment |
| DEPEPH | Definitive Ephemeris Product |
| DES | Station Description Message DAAC Emergency System |
| DESIS | DLR Earth Sensing Imaging Spectrometer |
| DET | Escape Detection |
| DEU | Digital Electronic Unit |
| DEV | Development |
| DF | Diffuser Type |
| DFCB | Data Format Control Book |
| DFD | Data Flow Diagram |
| DFP | DMS Format and Package |
| DFT | DMS File Transfer |
| DG | Digital Globe |
| DGC | DMS Generate Custom GCPs |
| DGGS | Discrete Global Grid System |
| DGR | DMS Generate Report Statistics |
| DGT | DMS Generate Thumbnail |
| DHCP | Dynamic Host Configuration Protocol |
| DHF | Data Handling Facility |
| DHN | Data Handling Node |
| DHS | Department of Homeland Security |
| DI | Dependency Injection |
| DIAB | DPS-in-a-Box |
| DIAR | Department of the Interior Acquisition Regulation |
| DIAT | Daily Image Annotation Tape |
| DID | Data Item Description or DMS Ingest L0R Data |
| DIE | DMS Ingest Element |
| DIR | Direction |
| DIRT | Data Interception by Remote Transmission |
| DIS | Data Information System Data Instrumentation System |
| DISC | Data and Information Services Center |
| DITL | Day-In-The-Life |
| DIV | Data Integrity Validation |
| DKI | Parepare, Indonesia Ground Station |
| DLC | DMS Load Characterization from Cloud |
| DLI | DMS Load Inventory from Cloud |
| DLR | Deutsches Zentrum für Luft- und Raumfahrt (German Aerospace Center) |
| DLT | Digital Linear Tape |
| DM | Data Management Document Management Data Manager |
| DMA | Direct Memory Access Defense Mapping Agency |
| DMAPI | Data Manager Application Programmer Interface |
| DMB | Data Management Branch Data Management Baseline |
| DMD | Digital Micromirror Device |
| DME | Development, Modernization, and Enhancement |
| DMF | Data Migration Facility |
| DMI | DCRS to MOE Interface |
| DMID | Data Management and Information Delivery |
| DML | Data Manipulation Language |
| DMLMDB | Data Management Landsat Metrics Database |
| DMP | Document Management Plan Data Management Policy Data Management Plan |
| DMR | Detailed Mission Requirements |
| DMS | Data Management Subsystem Degrees, Minutes, Seconds Database Migration Service |
| DMSP | Defense Meteorological Satellite Program |
| DMU | Data Migration Utility Drag Makeup |
| DMUI | Data Management User Interface |
| DMV | Detector Map Verification |
| DMZ | Demilitarized Zone |
| DN | Descending Node Digital Number |
| DNH | Do No Harm |
| DNS | Domain Name Server Domain Name System |
| DO | Delivery Order Director's Office |
| DOC | Department of Commerce |
| DoD | Department of Defense Depth of Discharge |
| DOI | Department of the Interior Digital Object Identifier |
| DOJ | Department of Justice |
| DOORS | Dynamic Object-Oriented Requirements System |
| DOORS-NG | Dynamic Object-Oriented Requirements Management System Next Generation |
| DOP | Dilution of Precision |
| DOQ | Digital Orthophoto Quadrangle |
| DORRAN | Distributed Ordering, Research, Reporting, and Accounting Network |
| DoS | Denial of Service |
| DOS | Department of State |
| DOWD | Differenced One-Way Doppler |
| DOY | Day-of-Year |
| DP | Data Processing |
| DPA | Destructive Physical Analysis |
| DPAS | Data Processing and Archive System |
| DPASRD | Data Processing and Archive System Requirements Document |
| DPC | Data Processing Components |
| DPD | DMS Placement Daemon |
| DPL | DMS Process L0R |
| DPMC | Directorate Program Management Council |
| DPP | DMS Packet and Placement |
| DPR | DMS Process ROLO Report |
| DPS | Data Processing Subsystem Data Processing System |
| DQA | Data Quality Analyst |
| DQV | Data Quality Validation |
| DR | Delivery Record or Discrepancy Report Disaster Recovery or Design Review |
| DRA | DMS Retrieve Ancillary |
| DRAC | Dell Remote Access Controller |
| DRAD | Downwelled Radiance Layer |
| DRB | Discrepancy Review Board |
| DRC | Data Requirements List Design Reference Case |
| DRC-16 | 16-day Design Reference Case |
| DRD | Dated Raw Data |
| DRE | DMS Retrieve Elevation |
| DRFP | Draft Request for Proposal |
| DRM | DMS Resource Manager |
| DRP | Disaster Recovery Plan |
| DRS | Data Reduction System |
| DRSF | Daily Request Status File |
| DRTS | Data Reporting and Tracking Subsystem |
| DSB | Data Service Branch |
| DSC | Descent Maneuver |
| DSI | DMS Subsetter Interface |
| DSL | Days-Since-Launch |
| DSM | Digital Surface Model |
| DSN | Deep Space Network |
| DSP | Digital Signal Processor |
| DSS | Data Staging System DPAS Subsetter |
| DST | Data Support Team |
| Dst | Disturbance Storm Time |
| DSW | DMS Setup Work Order |
| DSWE | Dynamic Surface Water Extent |
| dT | Difference between hot and cold temperatures |
| DT | Diffuser Type |
| DTED | Digital Terrain Elevation Data |
| DTG | Daytime Group |
| DTO | Data Transfer Object |
| DTR | Document Transfer Request |
| DTS | Development and Training Simulations |
| DTT | DPAS Test Team |
| DUI | Data Manager User Interface DMS Universal L0R Ingest |
| DUNS | Data Universal Numbering System |
| DUZ | DMS UTM Zone |
| DV | Data Validation |
| DV&E | Data Validation & Exchange |
| DVD | Digital Versatile Disc |
| DVD-R | Digital Versatile Disc – Read Only |
| DWF | Design Web Format |
| DXL | DMS L0 and L1 Products |
| E&A | Evaluation and Analysis |
| E&IT | Engineering and Information Technology |
| E-Government | Electronic Government |
| e-WAD | Employee Work Authorization Document |
| E2E | End-to-End |
| EA | Enterprise Architecture Executive Agency |
| EAC | Estimate at Completion |
| eAD | Enterprise Active Directory |
| EAR | Export Administration Regulations |
| EarthMAP | Earth Monitoring, Analyses, and Projections |
| EAS | Evaluation and Analysis Subsystem |
| EASI | Enterprise Architecture Study Implementation |
| EAST | EROS Architecture Study Team |
| Eb | Energy per Bit |
| Eb/N0 | Energy per Bit to Noise |
| EBAS | EROS Billing and Accounting System |
| EBS | Elastic Block Store |
| EC | Electronic Copy European Commission |
| EC2 | Amazon Elastic Compute Cloud |
| ECA | Earth Coverage Antenna |
| ECC | Error Correction Code Embedded Controller Card |
| ECCC | Environment and Climate Change Canada |
| ECCOE | EROS Calibration / Validation Center of Excellence |
| ECEF | Earth-Centered, Earth-Fixed |
| ECF | Earth Centered Fixed |
| ECHO | Extraction and Classification of Homogeneous Objects EOS Clearinghouse |
| ECI | Earth Centered Inertial |
| ECIMOD | ECI Mean of Date |
| ECITOD | Earth Centered Inertial TRUE of Date |
| ECL | Emitter-Coupled Logic |
| ECM | EROS Cloud Management |
| ECMP | EROS Contingency Plan Management |
| ECMWF | European Centre for Medium-Range Weather Forecasts |
| ECOSTRESS | Ecosystem Spaceborne Thermal Radiometer Experiment on Space Station |
| eCPIC | Electronic Capital Planning and Investment Control |
| ECR | Earth Centered Rotating Amazon Elastic Container Registry |
| ECS | EOSDIS Core System Amazon Elastic Container Service |
| ECU | End Cryptographic Unit |
| ECV | Essential Climate Variable |
| EDAC | Error Detection and Correction |
| EDAP | Earthnet Data Assessment Pilot |
| eDAR | Enterprise Data At Rest |
| EDC | EROS Data Center |
| EDDDR | EDC Daily Discrepancy Report EDC Daily Data Received Report |
| EDDN | Emergency Data Distribution Network |
| EDG | EOS Data Gateway |
| EDOS | EOS Data Processing Segment EOS Data and Operations System |
| EDU | Engineering Development Unit |
| EE | EarthExplorer Edge Extent |
| EELV | Evolved Expendable Launch Vehicle |
| EEE | Electrical, Electronic, Electromechanical |
| EEF | Enterprise Environmental Factors |
| EEMT | EROS Executive Management |
| EEO | Equal Employment Opportunity |
| EEPROM | Electrical Erasable Program Read-Only Memory |
| EETT | Ecosystem Extent Task Team |
| EF | Earth-Fixed |
| EFS | Encrypting File System Elastic File System EELV Secondary Payload Adapter Flight System |
| EGS | Enterprise Ground System |
| EGSE | Electrical Ground Support Equipment |
| EIA | Electronic Industry Alliance |
| EIRP | Effective Isotropic Radiated Power |
| EIS | External Interface Specification |
| EISER | EROS Information System Event Response |
| EJB | Enterprise Java Beans |
| EKMS | Electronic Key Management System |
| EKS | Amazon Elastic Kubernetes Service |
| EL1PS | EDC Level 1 Prototype System |
| ELT | Encumbrances, Leans, and Threats |
| ELV | Expendable Launch Vehicle |
| ELVIS | EROS LiDAR Visualization |
| EM | Engineering Model |
| Electronic Mail | |
| EMC | Electromagnetic Compatibility |
| EMD | Enhanced Metadata |
| EMI | Electromagnetic Interference |
| EMIS | Emissivity Layer |
| EMP | Electromagnetic Pulse |
| EMSD | Emissivity Standard Deviation |
| EMV | Expected Monetary Value |
| EN | EarthNow! |
| EnMAP | Environmental Mapping and Analysis Program |
| ENVI | Environment for Visualizing Images |
| EO | Earth Observing |
| EO-1 | Earth Observing 1 |
| EOA | Earth Observation Assessment |
| EOC | Earth Observation Center |
| EOCL | Electro-Optical Commercial Layer |
| EODMS | Earth Observation Data Management System |
| EOF | End-of-File |
| EOIS | Earth Observation Data & Information Systems |
| EOL | End-of-Line End-of-Life |
| EOM | End-of-Mission |
| EOMP | End-of-Mission Plan |
| EOP | Executive Office of the President |
| EOR | Earth Observation Requirements |
| EORES | Earth Observation Requirements Evaluation System |
| EOS | Earth Observing System |
| EOSAT | Earth Observation Satellite Company |
| EOSDIS | EOS Data and Information System |
| EPA | Euler Parameter ESD Protected Area |
| EPICS | Extended Pseudo-Invariant Calibration Sites |
| EPF | ETM+ Processing Facility |
| EPGN | EOS Polar Ground station Network |
| EPP | Electronic Power Converter for Payload |
| EPR | Engineering Peer Review |
| EPRP | Engineering Peer Review Plan |
| EPS | Electrical Power Subsystem |
| EPSG | European Petroleum Survey Group |
| ERB | Engineering Review Board |
| ERD | Entity Relationship Diagram |
| EROS | Earth Resources Observation and Science |
| EROS-ISP | EROS-Imaging Spectroscopy Project |
| ERPS | EOS Real-time Processing System |
| ERR | Error |
| ERS | EROS Registration Service |
| ERTS | Earth Resources Technology Satellite |
| ERMM | Emergency Risk Mitigation Maneuver |
| ES | Edge Slope |
| ESA | European Space Agency Earth Sensor Assembly |
| eSAS | Enterprise Security Applications Service |
| ESB | Enterprise Service Bus |
| ESCAP | Economic and Social Commission for Asia and the Pacific |
| ESD | Earth Science Division Electrostatic Discharge |
| ESDIS | Earth Science Data and Information System |
| ESDS | Earth Science Data Systems |
| ESF | Edge Spread Function |
| ESIP | Earth Science Information Partners |
| ESM | Equipment Support Module |
| ESMO | Earth Science Mission Operations |
| ESN | Enterprise Services Network |
| ESP | Encapsulating Security Payload Engineering Specialty Plans |
| ESPA | EROS Science Processing Architecture EELV Secondary Payload Adapter |
| ESTO | Earth Science Technology Office |
| ESRB | Elevation Specification Review Board |
| ESRI | Environmental Systems Research Institute |
| ESRIN | European Space Research Institute |
| ESSO | Earth Systems Science Organization |
| ESUN | Solar Spectral Irradiance Exoatmospheric Spectral Irradiances |
| ET | Evapotranspiration |
| ETa | Actual Evapotranspiration |
| ETC | Estimate to Completion |
| ETE | End to End |
| ETf | Evapotranspiration Fraction |
| ETL | Extraction, Translation, Load Extract, Transform, Load |
| ETM | Enhanced Thematic Mapper |
| ETM+ | Enhanced Thematic Mapper Plus |
| ETMDSS | Enhanced Thematic Mapper Plus Data Subsetting Subsystem |
| ETOPO5 | Earth Topography Five Minute Grid |
| ETr | Evapotranspiration Alfalfa-Reference Potential |
| ETRO | Estimated Time of Return to Operations |
| ETUN | Evapotranspiration Uncertainty |
| ETV | Expected Time Value |
| EU | Engineering Unit |
| EUG | EROS User Group |
| EUMETSAT | European Organization for the Exploitation of Meteorological Satellites |
| EV | Earned Value |
| EVCDU | Extended Virtual Channel Data Unit |
| EVI | Enhanced Vegetation Index |
| EVM | Earned Value Management |
| EVMS | Earned Value Management System |
| EVP | Environmental Verification Plan |
| EVS | Earth-Vehicle-Sun angle Earned Value System |
| EVT | Enhanced Value Technique Existing Vegetation Type |
| EWR | Eastern and Western Ranges |
| EWW | Extended Workweek |
| ExPAC | Extended PICS Absolute Calibration |
| F&PS | Functional and Performance Specifications |
| FA | Formulation Authorization |
| FAB | File Allocation Block |
| FAC | Full Aperture Calibrator |
| FAD | Formulation Authorization Document |
| FAI | Federal Acquisition Institute |
| FANO | Forcing and Normalizing Operation |
| FAQ | Frequently Asked Question |
| FAR | Federal Acquisition Regulation |
| FASC | Full Aperture Solar Calibrator |
| FASCAL | Facility for Spectroradiometric Calibrations |
| FAST-L7A | FAST-Landsat 7 Format |
| FAT | Factory Acceptance Testing |
| FAX | Facsimile Transmission |
| FBI | Federal Bureau of Investigation |
| FBMS | Financial and Business Management System |
| FBU | Fixed Base Unit |
| FC | Formulation Contractor Fiber Channel or Fractional Cover |
| FC-AL | Fiber Channel-Arbitrated Loop |
| FCA | Functional Configuration Audit |
| FCDAS | Fairbanks Command and Data Acquisition Station |
| FD | Flight Dynamics or Fire Detection |
| FDAB | Flight Dynamics Analysis Branch |
| FDAC | Failure Detection and Control |
| FDC | Failure Detection and Correction |
| FDD | Facilities Definition Document Format Description Document |
| FDDI | Fiber-Distributed Data Interface |
| FDF | Flight Dynamics Facility |
| FDIR | Fault Detection, Isolation, & Recovery |
| FDS | Flight Dynamics System |
| FDW | Foreign Data Wrapper |
| FEC | Forward Error Corrected |
| FedRAMP | Federal Risk and Authentication Management Program |
| FEDS | Front-End Data System |
| FEMA | Federal Emergency Management Agency |
| FEP | Front-End Processor |
| FFOV | Full Field of View |
| FFP | Firm Fixed Price |
| FFRDC | Federally Funded Research and Development Centers |
| FFS | Fiscal Financial System |
| FFT | Fast Fourier Transform |
| FFTW | Fastest Fourier Transform in the West |
| FGDC | Federal Geographic Data Committee |
| FHS | First Half Scan |
| FHSERR | First Half Scan Error |
| FIA | Final Implementation Agreement |
| FIEOS | Future Intelligent Earth Observing Satellites |
| FIFO | First In, First Out |
| FIPS | Federal Information Processing Standards |
| FIR | Finite Impulse Response |
| FISCAM | Federal Information System Control Audit Manual |
| FISMA | Federal Information Security Management Act |
| FISSA | Federal Information System Security Awareness |
| FITARA | Federal Information Technology Acquisition Reform Act |
| FLIR | Forward-Looking Infrared |
| FM | Fault Management |
| Fmask | Function of Mask |
| FMEA | Failure Mode and Effect Analysis |
| FMECA | Failure Modes, Effects, and Criticality Analysis |
| FMFIA | Federal Manager’s Financial Integrity Act |
| FMT | Format |
| FNMOC | Fleet Numerical Meteorology and Oceanography Center |
| FOC | Full Operational Capability |
| FOCCB | Flight Operations Configuration Control Board |
| FOIA | Freedom of Information Act |
| FOM | Facilities Operations Manager |
| FOP | Flight Operations Plan |
| FOR | Flight Operations Review |
| FORE-SCE | FOREcasting SCEnarios |
| FORMATS | Flight Dynamics Orbit and Mission Aids Transformation System |
| FOS | Flight Operations Segment |
| FOT | Flight Operations Team |
| FOTS | Free Off-The-Shelf |
| FOV | Field of View |
| FP | Flight Processor |
| FPA | Focal Plane Assembly Focal Plane Array |
| FPD | Flight Projects Directorate |
| FPE | Focal Plane Electronics |
| FPGA | Field-Programmable Gate Array |
| FP-IT | Forward Processing for Instrument Teams |
| FPM | Focal Plane Modules |
| FPPS | Federal Personnel Payroll System |
| FPROC | Forward Processing |
| FQT | Formal Qualification Testing Functional Qualification Test |
| FRB | Full-Resolution Browse Failure Review Board |
| FRED | Framed Raw Expanded Data |
| FRP | Federal Response Plan |
| FRPOC | Forward Processing |
| FRR | Flight Readiness Review |
| FRS | File Retrieval System |
| FS | Forecast Schedules |
| fSCA | Fractional Snow Covered Area |
| FSCC | Fastcom Serial Card |
| FSD | Flight Systems Development |
| FSL | Flight System Lead Flight Support Lead |
| FSM | Flight Systems Manager |
| FSP | Fundamental Science Practices |
| FSSC | Financial Support Services Contract |
| FST | Flight Support Team |
| FSTL | FST Lead |
| FSV | Flight Software Vendor |
| FSW | Flight Software |
| FTA | Fault Tree Analysis |
| FTD | File Transfer Daemon |
| FTE | Full-Time Equivalent Full-Time Employee |
| FTP | File Transfer Protocol |
| FTR | Forced to Rebalance |
| FTS | Flight Termination System |
| FUSE | Filesystem in USErspace |
| FW | Firewall Full Width |
| FWHM | Full Width Half Maximum |
| FWS | Fish and Wildlife Service |
| FY | Fiscal Year |
| G&A | General and Administrative |
| G/T | Gain over Temperature |
| GA | Geoscience Australia |
| GAfG | Google Apps for Government |
| GAM | Geography Analysis and Monitoring |
| GAN | Generative Adversarial Network |
| GAO | General Accounting Office |
| GAQD | Originator Routing Code for IIRV Messages |
| GAR | Global Archive Refresh |
| GARD | Global Analysis Ready Data |
| GAST | Greenwich Apparent Sidereal Time |
| GB | Gigabyte |
| GbE | Gigabit per Second Ethernet |
| GBFOM | Global Band Figure of Merit |
| GBICS | Gigabit Interface Converters |
| GBL | Government Bill of Lading |
| Gbps | Gigabits per Second |
| GBRM | Gradient Booted Regression Model |
| GCCB | Ground Segment Configuration Control Board |
| GCDR | Ground System Critical Design Review |
| GCOR | Temperature Corrected Gains |
| GCOS | Global Climate Observing System |
| GCP | Ground Control Point |
| GCRS | Geocentric Celestial Reference System |
| GCTP | General Cartographic Transformation Package |
| GDAIS | General Dynamics Advanced Information Systems |
| GDAL | Geospatial Data Abstraction Library |
| GDP | Gross Domestic Product |
| GDS | Ground Data Systems |
| GECSC | Geosciences and Environmental Change Science Center |
| GED | Global Emissivity Database |
| GEDU | Ground Encryption / Decryption Unit |
| GEE | Google Earth Engine |
| GEMI | Global Environmental Monitoring Index |
| GEO | Geolocation Index File Group on Earth Observations |
| GEOGLAM | Group on Earth Observations Global Agricultural Monitoring |
| GEOID | Gravity for Earth, Ocean, and Ice Dynamics |
| GeoJSON | Geographic JavaScript Object Notation |
| GEOM | Geometric |
| GeoRSS | Geographic Really Simple Syndication |
| GEOS-5 FP-IT | Goddard Earth Observing System Model, Version 5 Forward Processing for Instrument Teams |
| GEOS-R | Geostationary Operational Environmental Satellite-R Series |
| GEOSS | Global Earth Observation System of Systems |
| GeoTIFF | Geographic Tagged Image File Format Georeferenced Tagged Image File Format |
| GES DISC | Goddard Earth Sciences Data and Information Services Center |
| GEVS | General Environmental Verification Specification |
| GFE | Government Furnished Equipment |
| GFI | Government Furnished Information |
| GFOI | Global Forest Observations Initiative |
| GFP | Government Furnished Property |
| GFS | Global File System |
| GFY | Government Fiscal Year |
| GGOS | Global Geodetic Observing System |
| GHG | Greenhouse Gas |
| GHz | Gigahertz |
| GIA | Government Inspection Agency |
| GIAC | Global Information Assurance Certification |
| GIAM | Global Irrigated Area Mapping |
| GIDEP | Government Industry Data Exchange Program |
| GIFOV | Ground-projected Instantaneous Field of View |
| GigE | Gigabit Ethernet |
| GIMP | Greenland Ice Mapping Project |
| GIO | Geographic Information Officer |
| GIPS | Geoinformatics Products and Solutions |
| GIQE | General Image-Quality Equation |
| GIS | Geographical Information Systems Geographic Information System |
| GISRA | Government Information Security Reform Act |
| GISTDA | Geoinformatics and Space Technology Development Agency (Thailand) |
| GL | Geoscience Laboratory |
| GLAMR | Goddard Laser for Absolute Measurement of Radiance |
| GLanCE | Global Land Cover mapping and Estimation |
| GLC | Ground Look Calibration Request or Gilmore Creek |
| GLCC | Global Land Cover Characterization |
| GLCUC | Global Land Cover, land Use, and land cover Change |
| GloVis | Global Visualization Viewer |
| GLS | Global Land Survey or Global File System |
| GMAO | Global Modeling and Assimilation Office |
| GMAP | Global Monitoring Acquisition Plan |
| GMRCA | Global Map of Rainfed Cropland Areas |
| GMSEC | Goddard Mission Services Evolution Center |
| GMSR | Government Monthly Status Review |
| GMT | Greenwich Mean Time |
| GN | Ground Network |
| GNC | Gatineau, Canada Ground Station |
| GNE | Ground Network Element |
| GNE-DCRS | Ground Network Element Data Collection and Routing System |
| GNEDD | Ground Network Element Design Document |
| GNEOCD | Ground Network Element Operations Concept Document |
| GNERD | GNE Requirements Document |
| GNSS | Global Navigation Satellite System |
| GNU | GNU’s Not Unix |
| GOES | Geostationary Operational Environmental Satellite |
| GOLD | Goddard Open Learning Design |
| GOOS | Global Ocean Observing System |
| GOP | Ground Operations Plan |
| GOS | Geospatial One-Stop |
| GOT | Ground Operations Team |
| GOTS | Government Off-The-Shelf |
| GP | Geophysical Parameter |
| GP4 | General Perturbation Theory |
| GPART | Geophysical Parameter Tool Geophysical Parameter Assignment Rating Tool |
| GPCS | General Processing and Control System |
| GPD | GSFC Policy Directive |
| GPDR | Ground System Preliminary Design Review |
| GPL | General Public License |
| GPR | GNE Post-Pass Report Goddard Procedural Requirement |
| GPRA | Government Performance and Results Act |
| GPS | Geometric Processing System Gap Phase Statistic Global Positioning System |
| GPSR | Global Positioning System Receiver |
| GRACE | Gravity Recovery and Climate Experiment |
| GRASS | Geographic Resources Analysis Support System |
| GRI | Ground Reference Image |
| GRIB | Gridded Data or Gridded Binary |
| GRID | Global Resource Information Database |
| GRM | Ground Readiness Manager |
| GRS | Grid Reference System (SPOT) |
| GRT | Ground Readiness Test |
| GRTP | Ground Readiness Test Plan |
| GRTT | Ground Readiness Test Team |
| GS | Ground System Ground Segment |
| GSA | U.S. General Services Administration Ground Station Analyst |
| GSaaS | Ground Station as a Service |
| GSC | Ground Station Controller |
| GSCCB | Ground System Change Control Board |
| GSCDR | Ground System Critical Design Review |
| GSD | Ground Sampling Distance Guide Star Data |
| GSDD | Ground System Design Document |
| GSDRB | Ground System Discrepancy Review Board |
| GSE | Ground Support Equipment Ground Station Engineers Ground System Engineer Ground System Element |
| GSFC | Goddard Space Flight Center |
| GSI | Ground Station Identifier Ground System Infrastructure Ground Support Infrastructure |
| GSICS | Global Space-based Intercalibration System |
| GSIRD | Ground System Interface Requirements Document |
| GSIT | Ground System Integration |
| GSITP | Ground System Integration and Test Plan |
| GSIWG | Ground System Interface Working Group |
| GSL | GNU Scientific Library |
| GSLC | Geocoded Single-Look Complex |
| GSM | Ground System Manager |
| GSMO | Ground System Management Office Ground System and Mission Operations |
| GSMOR | Ground System Mission Operations Review |
| GSOCD | Ground System Operations Concept Document |
| GSOPD | Ground System Operations Plan Document |
| GSPDR | Ground System Preliminary Design Review |
| GSRD | Ground System Requirements Document |
| GSRR | Ground System Requirements Review |
| GSRT | Ground System Review Team |
| GSRVM | Ground System Requirements Verification Maintenance |
| GSSIR | Ground System to Spacecraft Integration Rack |
| gSSURGO | Gridded Soil Survey Geographic Database |
| GSSP | Guide for Developing Security Plans for Information Technology Systems |
| GST | Geographic Support Team Ground Station Technician Global Stocktake |
| GSTDN | Ground Spaceflight Tracking and Data Network |
| GSVVP | Ground System Verification and Validation Plan |
| GSVWG | Ground System Verification Working Group |
| GSWG | Ground System Working Group |
| GTID | Global Transaction Identifier |
| GTOPO30 | Global 30 Arc-Second Elevation Data Set |
| GTOS | Global Terrestrial Observing System |
| GTT | GNE Test Team |
| GUI | Graphical User Interface |
| GWENS | GroundWater Exploration Navigation System |
| GXA | Gimbaled X-Band Antennae |
| H/W | Hardware |
| HA | High Availability |
| HAAT | Header, Ancillary, Annotation, and Trailer |
| HALE | High Altitude Long Endurance |
| HBR | Hard Body Radius |
| HC | Hard Copy |
| HCA | Horizontal Collimator Assembly |
| HCMP | Hardware Configuration Management Plan |
| HCR | Hardware Configuration Request Hardware Change Request |
| HDDS | Hazards Data Distribution Systems |
| HDF | Hierarchical Data Format |
| HDF-EOS | Hierarchical Data Format - Earth Observing System |
| HDF-EOS2 | Hierarchical Data Format - Earth Observing System (version 2) |
| HDF5 | Hierarchical Data Format Version 5 |
| HDF5-EOS | Hierarchical Data Format Version 5 - Earth Observing System |
| HDFS | Hadoop File System |
| HDLC | High-Level Data Link Control |
| HDM | Hardware Data Manager HSM Data Manager |
| HDP | HDF Dumper |
| HDR | Header High Data Rate |
| HDRM | High Data Rate Modem |
| HDS | Horizontal Display Shift |
| HDT | High-Density Tape |
| HDTR | High-Density Tape Recorder |
| HE | Hardware Engineer |
| HEE | Half Edge Extent |
| Hex | Hexadecimal |
| HgCdTe | Mercury Cadmium Telluride |
| HGS | Hallway Ground Station |
| HIE | High Interest Event |
| HIRS | High-Resolution Infrared Sounder |
| HITL | Hour in the Life |
| HK | Housekeeping |
| HKDB | Housekeeping Data Buffer |
| HLD | High-Level Document |
| HLS | Harmonized Landsat and Sentinel-2 |
| HMP | Hardware Management Plan |
| HOM | Hotine Oblique Mercator |
| HOMFiH | Homogeneity Filter |
| HOT | Haze Optimized Transformation |
| HP | Horizontal Polarization |
| HPA | High-Power Antenna High Power Amplifiers |
| HPC | High Performance Computing |
| HPIG | Hosted Payload Interface Guide |
| HPN | Panchromatic Band Header File |
| HPP | Highest Point in Polygon |
| HQ | Headquarters |
| HR | Human Resources Heritage Review Horizontal Resolution |
| HR MSI | High-Resolution Multispectral Imager |
| HRS | Horizontal Resampling Space |
| HRV | High-Resolution Visible (SPOT sensor) |
| HSI | Hyperspectral Imagery Hyperspectral Imager |
| HSM | Hierarchical Storage Management Hierarchical Storage Manager |
| HSPD | Homeland Security Presidential Directive |
| HTC | High Throughput Computing |
| HTM | Thermal Bands Header File |
| HTML | Hypertext Markup Language |
| HTSI | Honeywell Technology Solutions Inc. |
| HTTP | Hypertext Transfer Protocol |
| HTTPS | Hypertext Transfer Protocol Secure |
| HUB | Historically Underutilized Business |
| HVAC | Heating, Ventilation & Air Conditioning |
| HVU | High-Volume User |
| HWCI | Hardware Configuration Item |
| Hz | Hertz |
| I | In-Phase Channel |
|---|---|
| I&T | Integration and Test |
| I/O | Input/Output |
| I/Q | In-phase and Quadrature Modulation Components |
| I1 | Internet 1 |
| I2 | Internet 2 |
| I2I | Image-to-Image |
| I2RV | Improved Inter-Range Vector Message |
| IA | Implementing Agreement or Impact Analysis International Activities Interagency Agreement |
| IAA | Interagency Agreement |
| IaaS | Infrastructure as a Service |
| IAC | Independent Assurance Contractor Issue Assessment Code |
| IaC | Infrastructure as Code |
| IAD | Ion-Assisted Deposition |
| IAM | Identity and Access Management Inclination Adjustment (Delta I) Maneuver |
| IAR | Image Anomaly Report |
| IARPA | Intelligence Advanced Research Projects Activity |
| IAS | Image Assessment Subsystem Image Assessment System |
| IASICP | IAS Internal Calibrator Pulse |
| IATO | Interim Authority To Operate |
| IAU | International Astronomical Union |
| IAW | In Association With |
| IBM | International Business Machines |
| IBR | Integrated Baseline Review |
| IC | Interface Control International Cooperator Internal Calibrator Internal Cache |
| ICD | Interface Control Document |
| ICDR | Instrument Critical Design Review |
| ICe | Internal Calibrator processing for Emissive bands |
| ICF | Initial Correction Factor |
| ICMP | Internet Control Message Protocol |
| ICO | International Cooperator Office |
| ICT | Interface Connectivity Testing |
| ICVS | Independent Calibration and Verification Segment Independent Characterization and Verification System |
| ICWP | IC Web Portal |
| ID | Infrastructure Design Interface Documents Identification |
| IDCC | Interval Data Collection Concept |
| IDCO | Image Data Collection Omission |
| IDCP | Interval Data Collection Plan |
| IDCS | Image Data Collection Schedule |
| IDD | Interface Definitions Document |
| IDE | Integrated Device Electronics Infrastructure Development Integrated Development Environment |
| IDF | Interval Definition File Image Data File |
| IDIQ | Indefinite Delivery Indefinite Quantity |
| IDL | Interactive Data Language |
| IDP | Individual Development Plan |
| IDPS | Image Data Processing Subsystem |
| IDR | IAS Data Recorder |
| IDS | Intrusion Detection System Interval Delivery Subsystem |
| IDSO | Image Data Schedule Omission |
| IDSR | Image Data Status Report Image Data Schedule Report Integrated Daily Status Report |
| IDWR | Idaho Department of Water Resources |
| IE | Infrastructure Element |
| IEC | iStat Executive Committee International Electrotechnical Commission |
| IEEE | Institute of Electrical and Electronics Engineers |
| IEM | Integrated Electronics Module |
| IERS | International Earth Rotation Service |
| IETF | Internet Engineering Task Force |
| IF | Intermediate Frequency |
| IFAT | ITOS File Accounting Tool |
| IFB | Invitation for Bid |
| IFD | Image File Directory |
| IFFT | Inverse Fast Fourier Transform |
| IFL | Interfacility Link |
| IFOV | Instrument Field of View Instantaneous Field of View |
| IGARSS | International Geoscience and Remote Sensing Symposium |
| IGE | Independent Government Estimate |
| IGMP | Internet Group Management Protocol |
| IGS | Integrated Security Gateway International Ground Station |
| IIOP | Internet Inter-ORB Protocol |
| IIR | Image Impact Report |
| IIRR | Instrument Integration Readiness Review |
| IIRV | Improved Inter-Range Vector |
| IITL | Interval-In-The-Life |
| IKE | Internet Key Exchange |
| ILI | IGS to LAM Interface |
| IM | Instant Message Inclination Maneuver |
| IMAR | Instrument Mission Assurance Requirement |
| IMB | Issue Management Board |
| IMF | Inverse Minor Frames Interval Metadata File |
| IMP | Information Management Plan Integrated Master Plan |
| IMR | Issue Management Record |
| IMS | Integrated Master Schedule Information Management System Information Management Services |
| IMT | Integrated Mission Timeline Information Management Technology |
| IMU | Inertial Measurement Unit Internal Measurement Unit |
| IMWD | Internet Moving Window Display |
| IN | Impulse Noise or Ingest |
| INC | Inclination Maneuver |
| INCITS | International Committee for Information Technology Standards |
| INCOSE | International Council on Systems Engineering |
| Inf | Infrastructure |
| INFOSEC | Information Security |
| ING | Ingest |
| INM | IGS Network Manager |
| INPE | National Institute for Space Research (Brazil) |
| InSb | Indium Antimonite |
| INT | Signed Integer |
| INT16 | 16-bit Signed Integer |
| INTR | Interpreted Layer |
| INTSM | Interpreted Layer with Some Masks Applied |
| INTWAM | Interpreted Layer with All Mask Applied |
| INV | Inventory |
| IOC | Initial Operational Capability Initial On-orbit Checkout Installation Operational Certification In-Orbit Checkout Initial Operational Configuration Intergovernmental Oceanographic Commission |
| IOCCG | International Ocean Colour Coordinating Group |
| IOE | Instrument Operations Element |
| IOI | Inventory Operations Interface |
| IONET | IP Operational Network |
| IoT | Internet of Things |
| IP | Internet Protocol Installation Plan Intellectual Property International Partnership |
| IPA | Interproject Agreement Instrument Pallet Assembly |
| IPAC | Intergovernment Payment and Collection |
| IPC | Institute for Interconnecting and Packaging Electronic Circuits Inter-Process Communication |
| IPCC | Intergovernmental Panel on Climate Change |
| IPComp | IP Payload Compression Protocol |
| IPDR | Instrument Preliminary Design Review |
| IPDS | Information Product Data System |
| IPDU | Internet Protocol Data Unit |
| IPE | Image Processing Element |
| IPM | IGS Priority Mask Online Tool IGS Priority and Request Map Incyte Project Manager Integrated Payload Module |
| IPMR | Integrated Program Management Report |
| IPMS | Integrated Project Management System |
| IPMSD | Integrated Project Management System Description |
| IPO | Integrated Program Office |
| IPP | Invoice Processing Platform |
| IPR | Intersegment Problem Report |
| IPS | Intrusion Prevention System Image Processing System |
| IPSec | Internet Protocol Security |
| IPSR | Instrument Preship Review |
| IPT | Integrated Project Team Integrated Product Team Integrated Program Team |
| IPV | Integrated Pulse Value |
| IQE | Image Quality Estimation |
| IR | Infrared |
| IRB | Investment Review Board |
| IRD | Interface Requirements Document |
| IRFP | Implementation Request for Proposal |
| IRIG | Inter-Range Instrumentation Group |
| IRLS | Iteratively Reweighted Least Squares |
| IRP | Incident Reporting Plan |
| IRR | Integrated Readiness Review |
| IRS | Interface Requirements Specification |
| IRU | Inertial Reference Unit |
| IRV | Improved Inter-Range Vector Message |
| IS | Ingest System |
| ISA | Internet Security and Acceleration Interconnection Security Agreement |
| ISAB | Integrated Science and Applications Branch |
| ISC | International Science Council |
| ISCCP | International Satellite Cloud Climatology Project |
| ISCP | Information System Contingency Plan |
| iSCSI | Internet Small Computer System Interface |
| ISD | Interface Specification Document |
| ISE | Instrument Support Electronics |
| ISF | Instrument Support Facility |
| ISI | Integral Systems Incorporated |
| ISIS | Integrated Software for Imagers and Spectrometers |
| ISL | Interswitch Link |
| ISO | International Organization for Standardization |
| ISP | Imaging Spectroscopy Project |
| ISPRS | International Society for Photogrammetry and Remote Sensing |
| ISRO | Indian Space Research Organization |
| ISSLOB | Information Systems Security Line of Business |
| ISSO | Information System Security Official |
| IST | Integrated System Test |
| ISTESR | Ingest Subsystem Test Execution Summary Report Inventory Subsystem Test Execution Summary Report |
| IT | Information Technology Integration Test Instrument Telemetry |
| ITAR | International Traffic in Arms Regulations |
| ITC | Integration Test Case |
| ITHR | Instrument Transition Handover Review |
| ITIP | Information Technology Infrastructure Plan |
| ITOS | Integrated Test and Operations System |
| ITP | Integration Test Plan |
| ITRF | International Terrestrial Reference Frame |
| ITRS | International Terrestrial Reference System |
| ITS | Information Technology Services Integrated Time Sweep |
| ITSD | Information Technology Services Division |
| ITSEC | Information Technology Security |
| ITSNOC | Information Technologies Service Network Operations Center |
| ITSOT | Information Technology Security Operations Team |
| ITSS | Information Technology and Scientific Services |
| ITU | International Telecommunications Union |
| IU | Individual User |
| IUR | Individual User Request |
| IV&V | Independent Verification and Validation |
| IVM | Interface Verification Matrix |
| IVOS | Infrared and Visible Optical Sensors |
| IW&DS | Information Warehouse and Data Store |
| IWAD | Individual Work Authorization Document |
| IWG | Interface Working Group |
| IWT | Image Window Table Integer Wavelet Transform |
| J2EE | Java 2 Platform, Enterprise Edition |
| JACIE | Joint Agency Commercial Imagery Evaluation |
| JALBTCX | Joint Airborne LiDAR Bathymetry Technical Center of Expertise |
| JAR | Java Archive |
| JASON | Joint Activity Simulation for Observatories and Networks |
| JAXA | Japan Aerospace Exploration Agency |
| JaxB | Java Architecture for XML Binding |
| JBOD | Just a Bunch Of Disks |
| JBOSS | J2EE Application Server |
| JCL | Joint Confidence Level |
| JDBC | Java Database Connectivity |
| JDK | Java Development Kit |
| JFIF | JPEG File Interchange Format |
| JIT | Just-In-Time (Compiler) |
| JMS | Java Messaging Service |
| JMSRA | Java Message Service Resource Adapter |
| JPEG | Joint Photographic Experts Group |
| JPF | Job Parameter File |
| JPL | Jet Propulsion Laboratory |
| JPSS | Joint Polar Satellite System |
| JSA | Johannesburg, South Africa Ground Station |
| JSON | JavaScript Object Notation |
| JSP | Java Server Pages |
| JSpOC | Joint Space Operations Center |
| JSR | Java Portlet Specification |
| JSX | Java HTML-like syntax |
| JTS | Java Topology Suite |
| JVM | Java Virtual Machine |
| JWT | JSON web token |
| K | Degrees Kelvin |
| K8s | Kubernetes |
| KA8 | Known Anomaly Eight |
| KARI | Korea Aerospace Research Institute |
| KB | Kilobyte |
| Kbps | Kilobits per second |
| KBps | Kilobytes per Second |
| KBR | Kellogg Brown & Root |
| KDP | Key Decision Point |
| kg | Kilogram |
| KHB | Kennedy Space Center Handbook |
| KHC | Kashi, China Ground Station |
| kHz | Kilohertz |
| KIS | Kiruna, Sweden Ground Station |
| km | Kilometer |
| KMA | Korean Meteorological Administration |
| KMI | Key Management Infrastructure |
| KML | Keyhole Markup Language |
| KMP | Key Management Plan |
| KMS | Key Management Service |
| kPa | Kilopascal |
| KPI | Key Performance Indicator |
| KPM | Key Performance Measures |
| KPR | Key Performance Requirement |
| KSAT | Kongsberg Satellite Services |
| KSC | Kennedy Space Center |
| Ksps | Kilo-Symbols per Second |
| KUJ | Kumamoto, Japan Ground Station |
| KVM | Keyboard Video Mouse |
| L&C | Likelihood and Consequence |
| L&EO | Launch and Early Orbit |
| L+30 | Launch + 30 Days |
| L+60 | Launch + 60 Days |
| L+90 | Launch + 90 Days |
| L0 | Level 0 Data Product |
| L0c | Level 0 Corrected |
| L0R | Level 0 Reformatted |
| L0Ra | Level 0 Reformatted Archive |
| L0Rc | Level 0 Reformatted Corrected |
| L0Rp | Level 0 Reformatted Product |
| L1 | Level 1 Data Product or Landsat 1 |
| L1AOS | Level 1 Automatic Ordering System |
| L1G | Level 1 Geometrically (Corrected) |
| L1Gs | Level 1 Geometric Systematic |
| L1Gt | Level 1 Systematic Terrain (Corrected) |
| L1P | Level 1 Precision (Corrected) |
| L1R | Level 1 Radiometric (Corrected) |
| L1R-H | Hybrid Level 1 Radiometric |
| L1SE | Level 1 Sustaining Engineering |
| L1T | Level 1 Terrain (Corrected) Level 1 Precision and Terrain |
| L1TP | Level 1 Terrain Precision (Corrected) |
| L2 | Level 2 Data Product or Landsat 2 |
| L2+ | Level 2+ |
| L2GT | Level 2 Systematic Terrain (Corrected) |
| L2PGS | Level 2 Product Generation System |
| L2PS | Level 2 Processing Subsystem |
| L2SP | Level 2 Science Product |
| L2SR | Level 2 Science Product, Reflectance only |
| L2TP | Level 2 Terrain Precision (Corrected) |
| L3 | Level 3 Landsat 3 |
| L3+ | Level 3+ |
| L3PGS | Level 3 Product Generation System |
| L4 | Level 4 Landsat 4 |
| L5 | Level 5 Landsat 5 |
| L7 | Landsat 7 |
| L8 | Landsat 8 |
| L9 | Landsat 9 |
| LAADS | Landsat Atmosphere Archive and Distribution System |
| LAASPA | Landsat Acquisition and Special Planning Application |
| LACCA | Land Automated Cloud Cover Assessment |
| LACS | Landsat Archive Conversion System |
| LADS | LDCM Archive and Dissemination Segment |
| LAM | Landsat Archive Manager |
| LAM AS | LAM Archive Server |
| LAM008 | Interface Between COI PS and L0Rp PS |
| LAN | Local Area Network |
| LANCE | Land, Atmosphere Near Real-Time Capability for EOS |
| LandIS | Landsat Next Instrument Suite |
| LaRC | Langley Research Center |
| LAS | Land Analysis System |
| LASP | Laboratory for Atmospheric and Space Physics |
| LaSRC | Land Surface Reflectance Code |
| LASSO | Least Absolute Shrinkage and Selection Operator |
| LAT | Latitude Lab Acceptance Test |
| LBG | Libreville, Gabon Ground Station |
| LC | LDCM Contractor |
| LCA | Land Change Assessment |
| LCACHG | Annual Land Cover Change |
| LCB | Load Control Board |
| LCC | Lambert Conformal Conic or Lifecycle Cost |
| LCCB | Landsat Configuration Control Board |
| LCCR | Landsat Configuration Change Request |
| LCG | Landsat Coordination Group |
| LCGS | LDCM Contractor Ground Segment |
| LCIPS | Landsat Cloud Image Processing System |
| LCLUA | Land Cover and Land Use Analysis |
| LCMAP | Land Change Monitoring, Assessment, and Projection |
| LCMASK | Land Cover Mask Band |
| LCMS | Landscape Change Monitoring System |
| LCNext | Land Cover Next |
| LCPCONF | Primary Land Cover Confidence |
| LCPRI | Primary Land Cover |
| LCR | Logical Change Record LTAP Collection Request |
| LCS | Land Change Science |
| LCSCONF | Secondary Land Cover Confidence |
| LCSEC | Secondary Land Cover |
| LCSS | LDCM Contractor Space Segment Land Change Science System |
| LCU | Load Control Unit |
| LDAP | Lightweight Directory Access Protocol |
| LDB | IAS Local Database or Land Database |
| LDCC | Landsat Data Continuity Contract |
| LDCM | Landsat Data Continuity Mission |
| LDCMGS | Landsat Data Continuity Mission Ground Station |
| LDCMSC | Landsat Data Continuity Mission Spacecraft |
| LDCP | LSDS Data & Capabilities Partnerships |
| LDDMWG | Landsat Data Distribution and Marketing Working Group |
| LDDWG | Landsat Data Distribution Working Group |
| LDMT | Landsat Data Management Team |
| LDI | LPS Data Ingest or L0Ra Data Ingest |
| LDIF | LDAP Data Interchange Format |
| LDIS | LAM to DORRAN Interface System |
| LDPC | Low-Density Parity Check |
| LDPS | Landsat Data Purchase System |
| LDRCS | LDCM Document Review Comment Spreadsheet |
| LDTS | LPS Data Transfer Subsystem |
| LE90 | Linear Error 90 Percent |
| LEDAPS | Landsat Ecosystem Disturbance Adaptive Processing System |
| LEI | LAM to ECS Interface |
| LEM | Lower Equipment Module |
| LEO | Low-Earth Orbiting Launch and Early Orbit |
| LEO&A | Launch, Early Orbit and Activation |
| LEO&C | Launch, Early Orbit & Commissioning |
| LEO-T | Low-Earth Orbiter-Terminal |
| LES | Log file Extraction Services |
| Level A | Level Zero Aggregated |
| LF | Line-Feed |
| LFAT | Landsat File Accounting Tool |
| LFO | Landsat Flight Operations |
| LFRDB | Landfire Reference Database |
| LG | L0Ra Generator |
| LGAC | Landsat Global Archive Consolidation |
| LGGS | Landsat Global Geodetic Standard |
| LGN | Landsat Ground Network |
| LGNT | Landsat Ground Network Test |
| LGO | Landsat Ground Operations |
| LGPL | Lesser General Public License |
| LGS | Landsat 7 Ground System Landsat Ground Station |
| LGSOWG | Landsat Ground Station Operations Working Group |
| LH | Left Hand |
| LHC | Left-Hand Circular L0Ra Histogram Characterization |
| LHCP | Left-Hand Circularly Polarized |
| LHS | Left-Hand Side Left-Hand SLO |
| LIB | Library |
| LICS | Landsat International Communication System |
| LID | Landsat and LDCM Inventory Database LSDS Inventory Database |
| LiDAR | Light Detection and Ranging |
| LIFO | Last In, First Out |
| LIL | Landsat Inventory Loader |
| LIM | Landsat Inventory Management LDCM Interface for Metadata Lunar Irradiance Model |
| LIMA | Landsat Image Mosaic of Antarctica Landsat Inventory Metadata Application |
| LIMB | LAM Interface for Metadata and Browse |
| LINEAGEQA | Lineage Index |
| LIR | LDCM in Retrospect |
| LIS | Landsat Integration System LACS Inventory System |
| LISS-III | Linear Imaging Self-Scanning Sensor III |
| LITAP | Landsat Intersegment Technical Assessment Panel |
| LKPC | Landsat Kubernetes Processing Controller |
| LL | Lower Left Lessons Learned |
| LLI | LAM to LACS Interface |
| LLIS | LAM LPGS Interface Subsystem |
| LM | Labeled Mask |
| LMASK | Labeled Mask |
| Lmax | Maximum Radiance |
| LMC | Lockheed Martin Corporation |
| LMCM | Launch Management Coordination Meeting |
| LMD | Landsat Mission Database |
| LMDD | Landsat Metadata Description Document |
| LMDRS | Landsat Metadata Documentation and Reporting System |
| LMI | Lower Equipment Module Interface |
| Lmin | Minimum Radiance |
| LMM | Landsat Mission Manager |
| LMMS | Lockheed Martin Missiles and Space |
| LMO | Landsat Mission Operations |
| LMOC | Landsat Multi-Satellite Operations Center |
| LMOCRD | Landsat Multi-Satellite Operations Center Requirements Document |
| LMOO | LMO Ops Crew |
| LMOP | Land Satellites Data System Mission Operations Project |
| LMST | Local Mean Solar Time |
| LMT | Landsat Metadata Transformation |
| LMWS | Landsat Missions Website |
| LN2 | Liquid Nitrogen |
| LNA | Low-Noise Amplifiers |
| LNET | Lustre Networking |
| LNext | Landsat Next |
| LO | Local Oscillator |
| LOA | Letter of Agreement |
| LOC | Letter of Cooperation Line of Code |
| LOE | Level of Effort |
| LON | Longitude |
| LOOFA | Landsat 7 On-Orbit Flight Automation |
| LOP | Landsat Operational Procedure |
| LOS | Loss of Signal or Line-of-Sight |
| LP DAAC | Land Processes Distributed Active Archive Center |
| LPCS | Land Product Characterization System |
| LPDS | Level 1 Product Distribution System LDCM Data Product Specification |
| LPGS | Landsat Product Generation System |
| LPGSUI | Level 1 Product Generation Subsystem User Interface Landsat Product Generation System User Interface |
| LPIP | Landsat Product Improvements Project |
| LPO | Landsat Program Office LSDS Program Office |
| LPS | Landsat 7 Processing System Landsat Processing System |
| LPSNG | Landsat Processing System Next Generation |
| LPSO | Landsat Project Science Office |
| LPT | Limited Performance Test |
| LPV | Land Product Validation |
| LR | Lower Right |
| LRD | Launch Readiness Date |
| LRMA | Land Resources Mission Area |
| LRMB | LDCM Risk Management Board |
| LRR | Launch Readiness Review |
| LRS | Land Remote Sensing Landsat Remote Sensing |
| LRSP | Land Remote Sensing Program |
| LS | Launch Segment |
| LSAA | Landsat and Sentinel-2 Archive / Access Landsat Sentinel Archive Access |
| LSATH | High-Saturation Radiance |
| LSATL | Low-Saturation Radiance |
| LSB | Least Significant Bit Low Surface Brightness |
| LSC | Landsat Security Committee |
| LSCF | Landsat Solar Calibration Frame |
| LSDS | Land Satellites Data System |
| LSF | Line Spread Function |
| LSIMSS | LDCM Scalable Integrated Multi-Mission Support System Landsat Scalable Integrated Multi-Mission Support System Landsat Scalable Integrated Multi-Mission Simulation System |
| LSIS | LSDS Science Information System |
| LSM | Land Survey Mission |
| LSO | LDCM Science Office LSRD Science Office |
| LSP | Launch Support Program Logistics Support Plan |
| LSQ | Least Squares |
| LSQAT | Landsat Science Quality Assurance Team |
| LSR | Launch Support Room |
| LSRD | LSDS Science Research and Development |
| LSS | Launch Services Segment |
| LST | Landsat Science Team Land Surface Temperature Landsat Surface Temperature |
| LST/E | Land Surface Temperature and Emissivity |
| LSTM | Land Surface Temperature Monitoring |
| LTA | Long-Term Archive |
| LTAP | Long-Term Acquisition Plan |
| LTAP-7 | Landsat 7 Long-Term Acquisition Plan |
| LTAP-8 | Landsat 8 Long-Term Acquisition Plan |
| LTAP-9 | Landsat 9 Long-Term Acquisition Plan |
| LTAS | Landsat Trending and Analysis System |
| LTI | Legacy Tape Ingest |
| LTO | Linear Tape Open |
| LTS | LACS Transcription System |
| LTTS | LPCS Trending Tool Suite |
| LTVA | Limited Technical Vulnerability Assessment |
| LTWG | Landsat Technical Working Group |
| Ltypical | Typical Radiance |
| LUCAS | Land Use/Cover Area Frame Survey |
| LULC | Land Use & Land Cover |
| LUN | Logical Unit Number |
| LUT | Look-Up Table |
| LV | Launce Vehicle |
| LVA | Launch Vehicle Adapter |
| LVDS | Low Voltage Differential Signaling |
| LVDT | Linear Variable Differential Transformer |
| LVRR | Launch Vehicle Readiness Review |
| LWIR | Long Wavelength Infrared |
| LXR | Landsat Transfer Radiometer |
| m | meter |
| M&PCB | Materials and Processes Control Board |
| M&PCP | Materials and Processes Control Program |
| M&V | Monitoring and Validation |
| M-CDR | MOC Critical Design Review |
| M-PDF | MOC Preliminary Design Review |
| M-SIR | MOC System Integration Review |
| M-SRR | MOC System Requirements Review |
| M_PDU | Multiplexing Protocol Data Unit |
| M2M | Machine-to-Machine |
| MA | Mission Archive Multiple Access Major Application Mission Assurance |
| MAA | Mission Acquisition Analyst |
| MAC | Media Access Control Monitor and Control Subsystem Mass Acceleration Curve |
| MACS | MSS-X Archive Conversion System Monitor and Control Subsystem |
| MAD | Median Absolute Deviation |
| MAE | Materials Assurance Engineer |
| MAID | Massive Array of Idle Disks Master Action Item Database |
| MAL | Master Activities List |
| MAN | Maritime Aerosol Network |
| MAM | Mission Assurance Manager |
| MAP | Mission Assurance Plan |
| MAR | Mission Assurance Requirements |
| MARCE | Multi-Attribute Requirements-Capabilities Evaluator |
| MAS | MODIS Archive System |
| MATLAB | Matrix Laboratory |
| MAUT | Multi-attribute Utility Theory |
| MAX | Maximum |
| MB | Megabyte |
| MBO | Management by Objects |
| Mbps | Megabit per Second |
| MBR | Minimum Bounding Rectangle |
| MBSRN | Multiband Spectral Relationship Near-Infrared |
| MBSRV | Multiband Spectral Relationship Visible |
| MBW | Model-Building Workbook |
| MC | MAC Controller or Memory Control |
| MCDL | Master Configured Document List Master Controlled Document List |
| MCDR | Mission Critical Design Review |
| MCE | Mirror Control Electronics |
| MCM | Multichip Module |
| MCR | Mission Concept Review |
| MCS | Monitor and Control Subsystem |
| MD | Metrics Database Mission Data |
| MD5 | Message-Digital Algorithm 5 Message-Digest Algorithm 5 |
| MDA | MacDonald, Dettwiler, and Associates |
| MDD | Metrics Driven Development |
| MDF | MOC Directive File Mission Data File |
| MDGLS | Mid-Decadal Global Land Survey |
| MDH | Mission Data Header |
| MDIO | Mission Data Input / Output |
| MDL | Metadata Loader |
| MDM | Mission Data Management |
| MDR | Mission Dress Rehearsal Mission Definition Review |
| mDRC | mini-Design Reference Case |
| MDS | MMO Database System Metadata Server |
| MDSL | Master Data Source List |
| MDT | Metadata Target |
| ME | Memory Effect |
| MEaSUREs | Making Earth System Data Records for Use in Research Environments |
| MEB | Materials Engineering Branch Main Electronics Box Main Electronics Board |
| MEC | Metrics ETL Component |
| MECO | Main Engine Cutoff |
| MEF | Mission Essential Function |
| MEO | Matrixed Engineering Organization |
| MEOS | Multi-Mission Earth Observation System |
| MEOW | Minimum Expected Observation Window |
| MER | Mission Equipment Room |
| MERIS | Medium Resolution Imaging Spectrometer |
| MERRA | Modern-Era Retrospective Analysis for Research and Applications |
| MERRA-2 | Modern-Era Retrospective Analysis for Research and Applications, Version 2 |
| MET | Mission Elapsed Time Model Evaluation Tool Meteorological Data |
| METAR | METeorological Aerodrome Reports |
| METRIC | Satellite-Based Energy Balance for Mapping Evapotranspiration With Internalized Calibration |
| MEXT | Ministry of Education, Culture, Sports, Science, and Technology (Japan) |
| MF or mf | Minor Frame |
| MFC | Microsoft Foundation Classes MAC Fetch CPF |
| MFPS | Major Frame Processing Subsystem |
| MFR | Multifunctional Receiver |
| MG | Metadata Generator |
| MG1 | McMurdo, Antarctica |
| MGS | MODIS Ground Station Management Server |
| MGT | Management Target |
| MHz | Megahertz |
| MI | Mutual Information |
| MIG | Meeting Information Guide |
| MIL | Materials Identification List MAC Inventory L0Ra |
| MIN | Minimum |
| MIR | Mid-Infrared |
| MIRBI | Mid-Infrared Burn Index |
| MIS | Master Integrated Schedule Management Information System |
| MISR | Multiangle Imaging Spectroradiometer |
| MISTE | Modular Integrated Simulation and Test Environment |
| MIT | Massachusetts Institute of Technology |
| MJF | Major Frame |
| MJP | MAC Job Processor |
| ML | Machine Learning |
| ML1R | Mission Level 1 Requirements |
| MLC | Most Likely Case |
| MLDRCS | Master LDRCS |
| MLH | Maximum Likelihood Estimate |
| MLI | MACS to LAM Interface Multi-Layer Insulation |
| MLT | Mean Local Time |
| MM | Multi-Mission Mission Manager |
| mm | Millimeter |
| MM&A | Mission Monitor & Analysis |
| mm/hr | Millimeters per Hour |
| MMA | Mission Management Analyst |
| MMIO | Modified Moravec Interest Operator |
| MMO | Mission Management Office |
| MMOIO | Mission Management Office Information Officer |
| MMOSA | MMO Security Activity |
| MMOSE | Mission Management Office Systems Engineer |
| MMR | Mission Requirements Review |
| MMS | MDGLS Management System Multi-Mission Modular Spacecraft |
| MMU | Memory Management Unit |
| MNDWI | Modified Normalized Differences Wetness Index |
| MO&DSD | Mission Operations and Data System Directorate |
| MOA | Memorandum of Agreement |
| MOC | Mission Operations Center |
| MOCRD | Mission Operations Center Requirements Document |
| MOD | MODIS Terra |
| MOD09 | MODIS Surface Reflectance – Terra Satellite |
| MOD11 | MODIS Land Surface Temperature and Emissivity – Terra Satellite |
| MOD13 | MODIS Vegetation Indices – Terra Satellite |
| MODIS | Moderate Resolution Imaging Spectroradiometer |
| MODNET | MO&DSD Operational/Development Network |
| MODTRAN | Moderate Resolution Atmospheric Transmission |
| MOE | Mission Operations Element |
| MOERD | Mission Operations Element Requirements Document |
| MOI | Moment of Inertia |
| MOM | Mission Operations Manager |
| MOP | Mission Operations Plan |
| MOPSS | Mission Operations Planning and Scheduling System |
| MOR | Mission Operations Room Mission Operations Review |
| MORKA | Mission Operations Readiness Key Activities |
| MORM | Mission Operations Readiness Manager |
| MOS | Mission Operations Simulation |
| MOTS | Mission Off-The-Shelf Military Off-The-Shelf Modified Off-The-Shelf |
| MOU | Memorandum of Understanding |
| MOVE | Mission Operations Voice Enhancement |
| MOWG | Mission Operations Working Group |
| MP | Multiprocessor Mission Planner or Mission Planning |
| MPEG | Moving Picture Experts Group |
| MPLS | Multiprotocol Label Switching |
| MPR | Monthly Progress Review |
| MPS | MODIS Processing System Mission Plan System Mission Planning and Scheduling |
| MPSR | Management Program Status Review Monthly Project Status Report |
| MR | Management Reserve |
| MRAM | Magnetoresistive Random Access Memory |
| MRB | Milestone Review Board Material Review Board |
| MRC | Metrics Reporting Component Metadata Record |
| MRF | Meta Raster Format |
| MRG | Metrics Report GUI |
| MRLC | Multiresolution Land Characteristics |
| MRR | Mission Requirements Review |
| MRT | Mission Readiness Testing |
| MRTG | Multirouter Traffic Grapher |
| MS | Multispectral Mission Simulations |
| ms | millisecond |
| MSA | Master Schedule of Activities |
| MSAVI | Modified Soil Adjusted Vegetation Index |
| msb | Most Significant Bit |
| MSB | Most Significant Byte |
| MSCD | Mirror Scan Correction Data |
| MSE | Mission Systems Engineering |
| MSFC | Marshall Space Flight Center |
| MSI | Multispectral Instrument Multispectral Imager |
| MSK | Receive Antenna Horizon Mask Message Managed Streaming for Apache Kafka |
| MSM | Multiservice Mobility Mission Simulations Manager Management Switch Module Mission Operations Center Systems Manager |
| MSO | Mission Support Office |
| Msps | Mega-Symbols per Second |
| MSPSP | Missile System Prelaunch Safety Data Package |
| MSR | Monthly Status Review |
| MSS | Multispectral Scanner Mass Storage System |
| MSS-A | Multispectral Scanner - Archive Format |
| MSS-P | Multispectral Scanner - Processed Format |
| MSS-R | Multispectral Scanner - Raw |
| MSS-X | Multispectral Scanner data, reformatted CCT-X data |
| MSSG | Microwave Sensors Subgroup |
| MST | Mission Support Team |
| MTA | Metadata |
| MTASS | Multi-Mission Three-Axis Stabilized Spacecraft |
| MTBF | Mean Time Before Failure |
| MTBS | Monitoring Trends in Burn Severity |
| MTDSS | MS and TM Data Subsetting System |
| MTF | Modulation Transfer Function |
| MTFC | Modulation Transfer Function Compensation |
| MTHR | Mission Transition Handover Review |
| MTI | Matera, Italy |
| MTL | Level 1 Metadata or Metadata Text File Extension |
| MTP | Distribution Product Metadata |
| MTR | Mission Transition Review |
| MTS | MDS Transformation Services |
| MTTR | Mean Time to Restore Mean Time to Repair Mean Time to Recovery |
| MTU | Maximum Transmission Unit |
| MU | Mobile Unit |
| MUA | Materials Usage Agreement |
| MUSES | Multiple User System for Earth Sensing |
| mW | milliWatt |
| MWD | Moving Window Display |
| MWIR | Mid-wave Infrared |
| MXL | Multimodeling eXchange Language |
| MYD | MODIS Aqua |
| MYD09 | MODIS Surface Reflectance – Aqua Satellite |
| MYD11 | MODIS Land Surface Temperature and Emissivity – Aqua Satellite |
| MYD13 | MODIS Vegetation Indices – Aqua Satellite |
| MYSA | Malaysian Space Agency |
| N/A | Not Applicable |
| N/T | Normal-Through |
| N0 | Noise Density |
| N2 | N-Squared |
| NAD27 | North American Datum 1927 |
| NAD83 | North American Datum of 1983 |
| NAIP | National Agriculture Imagery Program |
| NAK | Negative Acknowledgement |
| NALCMS | North American Land Change Monitoring System |
| NAPP | National Aerial Photography Program |
| NARA | National Archive and Records Administration |
| NARR | North American Regional Reanalysis |
| NAS | NASA Assurance Standard Network Attached Storage |
| NASA | National Aeronautics and Space Administration |
| NASADEM | National Aeronautics and Space Administration Digital Elevation Model |
| NASCOM | NASA Communications |
| NASDA | National Space Development Agency (Japan) |
| NASRDA | National Space Research Agency (Nigeria) |
| NAVOCEANO | Naval Oceanographic Office |
| NB | Narrow Band |
| NBAR | Nadir Bidirectional Reflectance Distribution Function Adjusted Reflectance |
| NBII | National Biological Information Infrastructure |
| NBR | Normalized Burn Ratio or Navigation Base Reference |
| NBRT | Normalized Burn Ratio Thermal |
| NCAC | National Civil Applications Committee |
| NCAR | National Center for Atmospheric Research |
| NCAS | National Carbon Accounting System |
| NCC | Network Control Center |
| NCI | Non-configured Item |
| NCR | Network Change Request Non-conformance Report |
| NCEP | National Centers for Environmental Prediction |
| NCSA | National Center for Supercomputing Applications |
| NCT | Network Connectivity Test |
| NDA | Non-Disclosure Agreement |
| NDBC | National Data Buoy Center |
| NDE | Non-Destructive Examination |
| NDEP | National Digital Elevation Program |
| NDF | NLAPS Data Format |
| NDI | Non-Development Items |
| NDIA | National Defense Industrial Association |
| NDMI | Normalized Difference Moisture Index |
| NDOP | National Digital Orthoimagery Program |
| NDP | National Satellite Land Remote Sensing Data Archive (NSLRSDA) Data Package |
| NDPF | NASA Data Processing Facility |
| NDSI | Normalized Difference Snow Index |
| NDVI | Normalized Difference Vegetation Index |
| NDWI | Normalized Difference Water Index |
| NErT | Noise Equivalent Delta Temperature |
| NED | Natural Elevation Data National Elevation Data |
| NEDL | Noise Equivalent Detector Radiance Noise Equivalent Differential Luminance |
| NEDT | Noise Equivalent Detector Temperature Noise Equivalent delta Temperature |
| NEMA | National Electrical Manufacturers Association |
| NEN | Near Earth Network |
| NENUG | Near Earth Network User’s Guide |
| NEOG | National Earth Observation Group |
| NEOS | National Earth Orientation Service |
| NEPAG | NASA EEE Parts Assurance Group |
| NESDIS | National Environmental Satellite Data and Information Service |
| NET | No Earlier Than |
| NetCDF | Network Common Data Form |
| NewOps | New Operational Procedures System |
| NEX | NASA Earth Exchange |
| NFS | Network File System |
| NG | National Guard |
| NGA | National Geospatial Intelligence Agency |
| NGAC | National Geospatial Advisory Committee |
| NGDA | National Geospatial Data Asset |
| NGO | Non-Governmental Organization |
| NGP | National Geospatial Program |
| NGS | National Geodetic Survey |
| NGTOC | National Geospatial Technical Operations Center |
| NH | Northern Hemisphere |
| NHAP | National High Altitude Photography |
| NHB | NASA Handbook |
| NIC | Network Interface Card |
| NIER | National Institute of Environmental Research |
| NIFC | National Interagency Fire Center |
| NIIRS | National Imagery Interpretability Rating Scale |
| NIOB | Niobrara, Nebraska |
| NIPD | Network Interface Planning Document |
| NIR | Near-infrared |
| NIRD | Network Interface Requirements Document |
| NIS | National Imagery Summit |
| NISAR | NASA-ISRO Synthetic Aperture Radar |
| NISN | NASA Integrated Services Network |
| NIST | National Institute of Standards and Technology |
| NITF | National Imagery Transformation Format |
| NKAU | National Space Agency of Ukraine |
| NLAPS | National Land Archive Production System |
| NLCD | National Land Cover Dataset National Land Cover Database |
| NLI | National Land Imaging |
| NLIP | National Land Imaging Program |
| NLIR | National Land Imaging Requirements |
| NLSR | Nighttime Light Surface Radiance |
| nm | Nanometer |
| NMAS | National Map Accuracy Standards |
| NMD | National Mapping Discipline |
| NMDB | Navigation and Mission Design Branch |
| NMS | Network Management Software |
| NN | Nearest Neighbor |
| NOA | New Obligating Authority |
| NOAA | National Oceanic and Atmospheric Administration |
| NOC | NUGS Operations Concept Network Operations Center |
| NOLAN | Nascom Operational Local Area Network |
| NOM | Network Operations Manager |
| NOR | NORAD Two Line Element Message |
| NORAD | North American Air Defense North American Aerospace Defense Command |
| NOTAM | Notice to Airmen |
| NOVAS | Naval Definition Vector Astronomy Software Naval Observatory Vector Astrometry Software |
| NP | Narrative Procedure |
| NPD | NASA Policy Directive |
| NPI | Norwegian Polar Institute |
| NPL | National Physical Laboratory |
| NPM | Node Package Manager |
| NPOESS | National Polar-orbiting Operational Environmental Satellite System |
| NPR | NASA Procedural Requirements |
| NPS | National Park Service |
| NPSL | NASA Parts Selection List |
| NPT | Network Performance Test |
| NPV | Net Present Value Net Pulse Value |
| NRCA | Nonconformance Reporting and Corrective Action |
| NRCS | Natural Resources Conservation Service |
| NRD | Network Requirements Document |
| NRO | National Reconnaissance Office |
| NRSCC | National Remote Sensing Center of China |
| NRT | Network Readiness Test Near Real Time |
| NRT-IC | Near Real Time for International Cooperators |
| NRTL | Nationally Recognized Testing Laboratory |
| NRZ-L | Non-Return to Zero-Level |
| NRZ-M | Non-Return to Zero-Mark |
| NSA | National Security Agency |
| NSC | Norwegian Space Centre |
| NSDI | Normalized Snow Difference Index National Spatial Data Infrastructure |
| NSF | National Science Foundation |
| NSG | Neustrelitz, Germany Ground Station |
| NSIDC | National Snow and Ice Data Center |
| NSLRSDA | National Satellite Land Remote Sensing Data Archive |
| NSM | Network and Security Manager |
| NSMC | National Satellite Meteorological Center |
| NSN/NSG | Neustrelitz Ground Station (Germany) |
| NSO | Nadir Simultaneous Overpass Netherlands Space Office |
| NSOF | NOAA Satellite Operations Facility |
| NSPAR | Nonstandard Parts Approval Request |
| NSS | NASA Safety Standard |
| NSSDA | National Standards for Spatial Data Accuracy |
| NSSDC | National Space Science Data Center |
| NSTC | National Science and Technology Council |
| NSTT | New Space Task Team |
| NTE | Not-To-Exceed |
| NTIA | National Telecommunications and Information Administration |
| NTP | Network Time Protocol |
| NTR | New Technology Report |
| NUC | Non-Uniformity Correction |
| NUGS | NASA-USGS Joint Ground System |
| NUP | North Up |
| NUSO | National Uncrewed Systems Office |
| NVM | Non-Volatile Memory |
| NWI | National Wetlands Inventory |
| NWIS | National Water Information System |
| NWP | Numerical Weather Prediction |
| NWS | National Weather Service |
| O&M | Operations & Maintenance |
| O&S | Operations & Sustaining |
| O-CCB | Operations Configuration Control Board |
| O-PRB | Operations Products Review Board |
| OA | Operational Archive Operations Agreement Operations Analyst Orbital Alliant Tech Systems Office Automation |
| OAC | Opportunity Assessment Code |
| OAD | Operational Algorithm Description |
| OAG | Office of Acquisitions and Grants |
| OAR | On-Orbit Acceptance Review Operational Acceptance Review |
| OAV | Operational Verification Assessment |
| OB | Orbit Reference Frame |
| OBC | Onboard Computer Onboard Calibrator Onboard Blackbody Calibrator |
| OBE | Overcome By Events |
| OBP | Onboard Processor |
| OBPG | Ocean Biology Processing Group |
| OBS | Organizational Breakdown Structure |
| Obs-IRD | Observatory Interface Requirements Document |
| OC | Online Cache or Operations Concept |
| OCAO | Office of the Chief Administrative Officer |
| OCC | Operator Control Console or Occurrence |
| OCD | Operations Concept Document |
| OCE | Office of Chief Engineering |
| OCI | Organization Conflict of Interest |
| OCIO | Office of the Chief Information Officer |
| OCM | Operational Configuration Management Orbital Conjunction Message |
| OD | Orbit Determination Orbital Debris |
| ODBC | Open Database Connectivity |
| ODC | Other Direct Costs Open Data Cube |
| ODI | On-Demand Interface |
| ODL | Object Description Language Object Definition Language |
| ODNI | Office of the Director of National Intelligence |
| ODOS | Order Distribution and Order Status |
| ODS | Order Distribution Service |
| OE | Operations Engineer |
| OEI | Office of Enterprising Information |
| OEM | Original Equipment Manufacturer Oracle Enterprise Manager |
| OFE | Order Fulfillment Element |
| OGC | Open Geospatial Consortium |
| OH | Optical Head |
| OHS | Order Handler Subsystem |
| OIRD | Observatory Interface Requirements Document |
| OIS | OLI-2 Interface Simulator |
| OITL | Orbit-In-The-Life |
| OIV | On-orbit Initialization and Verification |
| OJT | On-The-Job Training |
| OLAF | OPO Laser Alignment Facilities |
| OLAP | On-Line Analytical Processing |
| OLCI | Ocean and Land Color Instrument |
| OLI | Operational Land Imager |
| OLI-2 | Operational Land Imager-2 |
| OLS | Ordinary Least Square |
| OLTWG | Old Landsat Technical Working Group |
| OM | Operations and Maintenance |
| OMA | Oblique Mercator Type A |
| OMB | Office of Management and Budget or Oblique Mercator Type B |
| OMF | Order Metadata File |
| OMI | Ozone Monitoring Instrument |
| OMP | Operations Management Plan |
| OMS | Optimum Management System |
| ONR | Office of Naval Research |
| OO | Orbit Oriented |
| OOB | Out-of-Band |
| OPA | Organizational Process Asset |
| OPeNDAP | Open-Source Project for Network Data Access Protocol |
| OPM | Office of Personnel Management |
| OPM3 | Organizational Management Maturity Model |
| OPO | Optical Parameter Oscillator |
| OPR | Office of Primary Responsibility |
| OPS | Operations |
| Ops Con | Operations Concept |
| Ops GUI | Operations Graphical User Interface |
| OQPSK | Offset Quadrature Phase Shift Keying |
| OR | Operations Readiness Oracle Reduction |
| ORB | Object Request Broker Ocean Radar Backscatter |
| ORC | Optimized Row Columnar |
| ORE | Operations Readiness Exercise |
| OREO | Operational Readiness Exercises and Observations |
| ORIT | Oracle Reduction Integation and Test |
| ORR | Operations Readiness Review |
| ORST | Oracle Reductioin System Test |
| ORT | Operational Readiness Test |
| OS | Operating System OLI-2 Simulator |
| OSAM | On-Orbit Servicing, Assembly and Manufacturing |
| OSB | Observatory System Branch |
| OSC | Orbital Science Corporation |
| OSD | Object Storage Device |
| OSHA | Occupational Safety and Health Administration |
| OSI | Open Systems Interconnection |
| OSS | Object Storage Server Operations Support Simulations Open Source Software |
| OSSMA | Office of Systems Safety and Mission Assurance |
| OST | Object Storage Target |
| OSTP | Office of Science and Technology Policy |
| OTB | Over Target Baseline |
| OTF | Optical Transfer Function OLI Test Facility On The Fly |
| OTS | OLI-TIRS Subsetter Over Target Schedule Off-The-Shelf |
| OU | Organizational Unit |
| OUI | Operator User Interface |
| OV | Operational Verification |
| OV-1 | Operational View 1 |
| OVA | Operations Validation and Acceptance |
| OVAD | Operational Verification Acceptance Document |
| OVAP | Operational Verification Acceptance Period |
| OWASP | Open Web Application Security Project |
| OWB | Oracle Warehouse Browser Oracle Warehouse Builder |
| OWSGUI | Oracle Web Service GUI |
| P&C | Project Management and Controls |
| P&S | Planning and Scheduling |
| P/D | Programmable Demodulator |
| P/N | Part Number |
| P/P | Patch Panel |
| P3I | Preplanned Product Improvement |
| PaaS | Platform as a Service |
| PAC | Partial Aperture Calibrator Prince Albert, Canada Ground Station |
| PACE | Plankton, Aerosol, Cloud, Ocean Ecosystem |
| PACI | Payload and Attitude Control Interface |
| PAIV | Project Acceptance and Implementation Variance |
| PALMA | Portfolio Analysis Machine |
| PAM | Pluggable Authentication Module |
| PAN | Production Acceptance Notification Panchromatic |
| PAP | Primary Archive Program |
| PAPH | Pseudo-Average Pulse Height |
| PAPL | Project Approved Parts List |
| PAR | Post-Assessment Report |
| PASC | Partial Aperture Solar Calibrator |
| PB | Playback or Petabyte |
| PBL | Project Baseline Log |
| PBS | Project Breakdown Structure |
| PBTLM | PB X-Band Housekeeping Telemetry |
| PC | Personal Computer Polyconic Production Control Program Charter Property Clerk |
| PCA | Physical Configuration Audit Physical Channel Access Point of Closest Approach |
| Pcache | Processing Cache |
| PCB | Parts Control Board Project Control Board Product Control Board |
| PCD | Payload Correction Data |
| PCDS | Payload Correction Data Subsystem |
| PCI | Peripheral Component Interface Peripheral Component Interconnect |
| PCI-E or PCIe | Peripheral Component Interconnect Express |
| PCI-X | Peripheral Component Interconnect Extended |
| PCM | Pulse Code Modulation |
| PCP | Parts Control Plan |
| PCR | Project Closeout Review |
| PCRE | Perl Compatible Regular Expression |
| PCS | Process Control Subsystem Product Control Subsystem Production Control Subsystem |
| PCSS | Program Coordinate Systems Standards |
| PCTUN | Percent Uncertainty |
| PCU | Power Control Unit |
| PD | Product Distribution Position Description Program Directive |
| PDA | Personal Digital Assistant |
| PDB | Program Decision Board Project Database |
| PDD | Presidential Decision Directive |
| PDE | Propulsion Drive Electronics |
| Portable Document Format Payload Data Formatter |
|
| PDI | Product Delivery Interface |
| PDL | Product Design Lead |
| PDM | Precedence Diagramming Method |
| PDPS | Planning and Data Processing Segment |
| PDR | Product Delivery Record Preliminary Design Review |
| PDRD | Product Delivery Record Discrepancy |
| PDRM | Product Delivery Receipt Mechanism |
| PDS | Product Distribution System |
| PDU | Protocol Data Unit Power Distribution Unit |
| PE | Proficiency Exercises |
| PED | Personal Electronic Device Portable Electronic Device |
| PER | Performance Evaluation Review Pre-Environmental Review |
| PERT | Program Evaluation and Review Technique |
| PF | Polarization Factor |
| PF1 | Poker Flats 1 |
| PFPA | Prime Focal Plane Assembly |
| PFR | Problem / Failure Report |
| PFS | Product Functional Specification |
| PG | Product Generation |
| PgC | Program Charter |
| PGE | Product Generation Element |
| PgIMS | Program Integrated Master Schedule |
| PgMP | Program Management Plan |
| PGN | Polar Ground Network |
| PGS | Product Generation System (Generic Name for NLAPS) Product Generation Subsystem |
| PgWBS | Program Work Breakdown Structure |
| PHA | Preliminary Hazard Analysis |
| PHP | Hypertext Preprocessor |
| PI | Primary Investigator Principal Investigator |
| PIA | Project Implementation Agreement Privacy Impact Assessment |
| PIB | Payload Interface Board |
| PICS | Pseudo-Invariant Calibration Site Planetary Image Cartography System |
| PID | Process Identification |
| PIE | Payload Interface Electronics |
| PII | Personally Identifiable Information |
| PIL | Parts Identification List |
| PIMS | Project Integrated Master Schedule |
| PIP | Premium Internet Protocol |
| PITL | Pass-In-The-Life |
| PIV | Personal Identity Verification |
| PIXELQA | Pixel Quality Assessment |
| PKI | Public Key Infrastructure |
| PKO | Project Kick-Off |
| PL | Public Law |
| PL-DRO | Phase-Locked Dielectric Resonance Oscillator |
| PL/SQL | Procedural Language / Structured Query Language |
| PLA | Payload Adapter |
| PLAR | Postlaunch Assessment Review |
| PLRA | Program Level Requirements Agreement Program Level Requirements Appendix |
| PM | Phase Modulation Program Management Project Management |
| PMB | Performance Measurement Baseline |
| PMBOK | Project Management Book Of Knowledge |
| PMC | Performance Monitoring Counter Program Management Council Payload Mode Control |
| PMEF | Primary Mission Essential Function |
| PMI | Project Management Institute |
| PMMM | Program Management Maturity Model |
| PMO | Persistent Mission Object Portfolio Management Office |
| PMP | Project Management Professional Project Management Plan Procurement Management Plan |
| PMPDR | Physical Media Product Delivery Record |
| PMPDRD | Physical Media PDR Discrepancy |
| PMRT | Post-Mission Readiness Testing |
| PMSC | Program Management Systems Committee |
| PMSEIT | Program Management, Systems Engineering, and Integration and Test |
| PMT | Performance Measurement Technique |
| PN | Pseudorandom Noise or Pseudo-Noise |
| PNG | Portable Network Graphics |
| PNTR | Pointer |
| PO | Project Owner Purchase Order |
| POA&M | Plan of Action and Milestones |
| POC | Point of Contact |
| POJO | Plain Old Java Object |
| POL | Policy Polarimetric Radar |
| POLSA | Polska Agencja Kosmiczna (Polish Space Agency) |
| POP | Point-Of-Presence Point of Performance Period of Performance |
| POS | Position and Orientation System |
| POSC | Petrotechnical Open Software Corporation |
| POSIX | Portable Operating System Interface for Unix |
| POT | Product Order Tables |
| PP | Planning Package Pull-Pin |
| PPF | Payload Processing Facility |
| PPL | Preferred Parts List |
| PPM | Program Project Management |
| ppm | Parts Per Million |
| PPOC | Procurement Point of Contact |
| PPP | Project Protection Plan |
| PPQA | Process and Product Quality Assurance |
| PPR | Post-Pass Report |
| PPROC | Post-Processing |
| PPS | Pulse Per Second |
| PPT | Proficiency Pass Training |
| PQ | Pixel Quality |
| PQA | Palm Query Application |
| PR | Program Review Problem Report Product Request Purchase Request |
| PRA | Paperwork Reduction Act Probabilistic Risk Assessment |
| PRB | Problem Report Message |
| PRD | Project Reference Database |
| PRDS | Project Reference Database System |
| PRI | Priority Mask Message |
| PRISM | Professional Resources in Information Systems Management Parameter-elevation Regressions on Independent Slopes Model |
| PRL | Pull Remote Logs |
| PRN | Pseudorandom Noise Pattern |
| PRNU | Photo Response Non-uniformity |
| PROD | Production |
| PROM | Programmable Read-Only Memory |
| PROP | Propulsion |
| PS | Polar Stereographic Production Server |
| Ps | Probability of Mission Success |
| PSA | Pre-Security Assessment |
| PSD | Power Spectral Density |
| PSF | Point Spread Function |
| PSG | Pull and Send GPR |
| PSGUI | Production Server Graphical User Interface |
| PSHSCCSS | Percent Slope, Hillshade, Cloud, Cloud Shadow, and Snow |
| PSI | PCS Startup IAS |
| PSK | Phase Shift Keyed |
| PSLA | Project Service Level Agreement |
| PSM | Project Safety Manager |
| PSMON | Power Status Monitor |
| PSR | Priority/Service Request Mask File Preship Review Preshipment Review Program Status Review |
| PSS | Pull and Send SSOH |
| PSU | Power Supply Unit |
| PSW1 | Partial Surface Water 1 |
| PTA | Post-Test Analysis |
| PTM | Principal Task Manager |
| PTP | Primary Transfer Program Programmable Telemetry Processor |
| PTR | Post-Test Review |
| PTS | Project Task Structure |
| PUB | Publication |
| PUP | Perfectly Uniform Pitch |
| PV | Planned Value |
| PVCS | Polytron Version Control System |
| PVL | Parameter Value Language |
| PWA | Printed Wire Assembly |
| PWB | Printed Wiring Board |
| PWBS | Project Work Breakdown Structure |
| PWC | PCS Work Order Controller |
| PWG | PCS Work Order Generator |
| PWL | PCS Work Order Scheduler Lite |
| PWS | Project Website PCS Work Order Scheduler |
| PWSL | Potential Wetland Soil Landscape |
| PWV | Precipitable Water Vapor |
| PyCCD | Python-based CCD |
| Q | Quadrature Channel Quantized Output |
| Q&A | Quality and Accounting |
| Q1 | Quarter 1 |
| Q1G | L1G Quality Assurance |
| Q1R | L1R Quality Assurance |
| Q2 | Quarter 2 |
| Q3 | Quarter 3 |
| Q4 | Quarter 4 |
| QA | Quality Assurance Quality Assessment |
| QAA | Quality Assurance Audit |
| QAS | Quality Assessment Subsystem |
| QASP | Quality Assurance Surveillance Plan |
| QB | Quality Board Quality Band |
| QC | Quality Control |
| QCM | Quartz Crystal Microbalance |
| QFS | Quick File System |
| QMM | Landsat Quarterly Management Meeting |
| QMP | Quality Management Plan |
| QMS | Quality Management System |
| QOCI | Qt Oracle Call Interface |
| QPSK | Quadrature Phase Shift Keying |
| QTH | Quartz Tungsten Halogen |
| QUI | Quality Assurance User Interface |
| QWIP | Quantum Well Infrared Photometers |
| QWR | Quarterly Web Review |
| R&D | Research and Development |
| R&D | Reference and Validation |
| R-C | Resistor-Capacitor |
| R-S | Reed-Solomon |
| R/T | Receive/Transmit |
| R0C | A stage of Radiometric Processing; Radiometric Calibration |
| R0R | A stage of Radiometric Processing; Radiometric Artifacts Collection |
| R1 | Release 1 |
| R1R | A stage of Radiometric Processing; Cosmetic Changes |
| R2 | Release 2 |
| R21 | Resource 21 |
| R3 | Release 3 |
| R53 | Amazon Route 53 |
| RA | Right Ascension Risk Assessment |
| RAC | Real Application Cluster Risk Assessment Code |
| RAD | Radiometric Rapid Application Development |
| RadCalNet | Radiometric Calibration Network |
| RadCaTS | Radiometric Calibration Test Site |
| RADSATQA | Radiometric Saturation |
| RadSim | Radiometry Simulator |
| RAID | Redundant Array of Independent Disks |
| RAM | Random Access Memory Responsibility Assignment Matrix Resource Allocation Matrix |
| RAMP | Radarsat Antarctica Mapping Project |
| RAS | Reliability, Availability, Serviceability |
| RAT | Regression Analysis Test Release Acceptance Test |
| RBD | Risk Based Decision |
| RBS | Reflective Band Sensor Risk Breakdown Structure |
| RBST | Role-Based Security Training |
| RBV | Return Beam Vidicon |
| RC | Real Constellation |
| RCA | Radio Corporation of America |
| RCA-EO | Requirements, Capabilities, and Analysis for Earth Observations |
| RCC | Raw Computer Compatible |
| RCCA | Root Cause and Corrective Action |
| RCM | Resource Configuration Manager RADARSAT Constellation Mission |
| RCMAP | Rangeland Condition, Monitoring, Assessment, and Projection |
| RCN | Revision Control Number |
| RCR | Remote Controlled Repository |
| RCS | Reaction Control System Reference Climate Station |
| RD | Requirements Document |
| RDA | Research Data Alliance |
| RDAC | Redundant Disk Array Controller |
| RDB | Requirements Database Baseline |
| RDBMS | Related Database Management System |
| RDC | Remote Desktop Connection |
| RDCS | Raw Data Capture Subsystem |
| RDM | Radiation Design Margin |
| RDPS | Raw Data Processing Subsystem |
| RDS | Raw Data Subsetter Relational Database Service Remote Desktop Services |
| RDSS | RCC Data Subsetter Raw Data Subsetting Subsystem |
| RE | Requirements Engineer and Responsible Engineer |
| REC | Recovery Time |
| REF | Reference |
| REL | Relative |
| REQ | Service Request Message Requirement |
| RER | Relative Edge Response |
| REST | Representational State Transfer |
| REVCM | Revised Cloud Mask |
| RF | Radio Frequency |
| RFA | Request for Action |
| RFC | Request for Comments |
| RFI | Request for Information |
| RFID | Root File Identification Radio-Frequency Identification |
| RFO | Request for Offer |
| RFP | Request for Proposal |
| RFQ | Request for Quote |
| RFR | Request for Record Run for Record |
| RFS | Radio Frequency System |
| RG | Relative Gain |
| RGAC | RADARSAT-1 Global Archive Consolidation |
| RGB | Red Green and Blue Color Value |
| RGE | Research Grade Evaluation |
| RH | Red-High or Right Hand |
| RHC | Right-Hand Circular |
| RHCP | Right-Hand Circularly Polarized |
| RHEL | Red Hat Enterprise Linux |
| RHORC | Rayleigh-corrected Reflectance |
| RHS | Right-Hand Side Right-Hand SLO |
| RHSS | RHEL Satellite Server |
| RIDS | Review Item Discrepancies |
| RIM | Risk Information Management Tool |
| RIO | Risks, Issues, and Opportunities |
| RIPL | Risk Identification Prompt List |
| RIRLS | Robust Iteratively Reweighted Least Squares |
| RIS24 | 24-bit Raster Image |
| RIT | Rochester Institute of Technology |
| RITSO | Regional IT Security Officer |
| RL | Red-Low |
| RLN | Resource Load Network |
| RLUT | Response Linearization Look-Up Table |
| RM | Requirements Management Risk Manager or Resource Manager |
| RMAN | Recovery Manager |
| RMAP | Remote Memory Access Protocol |
| RMB | Risk Management Board |
| RMD | Risk Management Database |
| RMF | Risk Management Framework |
| RMM | Risk Mitigation Maneuvers |
| RMP | Requirements Management Plan Risk Management Plan |
| RMR | Risk Management Record |
| RMS | Root Mean Square or Risk Management System |
| RMSE | Root Mean Square Error |
| RMSEr | Radial Root Mean Square Error |
| RMT | Risk Management Tool |
| RN | Random Noise |
| RO | Receiving Officer |
| ROC | Real-Time Operations Console |
| ROI | Return on Investment Region of Interest |
| ROIC | Read-Out Integrated Circuit |
| ROLO | Robotic Lunar Observatory |
| ROM | Rough Order of Magnitude |
| ROS | Relative Operational Sequence |
| ROSCOSMOS | Russian Space Agency |
| ROSHYDROMET | Russian Federal Service for Hydrometeorology and Environmental Monitoring |
| RPC | Remote Procedure Call Rational Polynomial Coefficient |
| RPE | Rational Publishing Engine |
| RPI | Rumpin, Indonesia Ground Station |
| RPM | Revolutions per Minute RPM Package Manager |
| RPS | Radiometric Processing Subsystem |
| RR | Readiness Review |
| RRAS | Routing and Remote Access Services |
| RRB | Reduced Resolution Browse |
| Rrs | Remote Sensing Reflectance |
| RSA | Rivest-Shamir-Adleman |
| RSB | Remote Sensing Branch |
| RSD | Remote Sensing Division |
| RSDO | Rapid Spacecraft Development Office |
| RSDP | Rapid Spacecraft Development Office |
| RSP | Real-Time Science Processing |
| RSPP | Robotic System Protection Plan |
| RSR | Relative Spectral Responses |
| RSS | Reuse Subsystem Really Simple Syndication Rich Site Summary Root Sum Square |
| RST | Remote Sensing Technologies |
| RT | Real Time or Radiative Transfer |
| RTA | Roof Top Antenna |
| RTC | Remote Telemetry and Command Unit Remote Telemetry Command |
| RTCS | Relative Time Command Sequence |
| RTF | Rich Text Format |
| RTK | Real-Time Kinematic |
| RTO | Real Time Operations |
| RtoO | Research-to-Development-to-Operations |
| RTS | Relative Time Sequence |
| RTT | Round Trip Time |
| RTTM | Requirements-To-Test Matrix |
| RTTOV | Radiative Transfer (RT) for Television InfraRed Observation Satellite (TIROS) Operational Vertical Sounder (TOVS) |
| RVM | Requirements Verification Matrix |
| RVPN | Railroad Valley Playa |
| RWA | Reaction Wheel Assembly |
| RWOC | Radiometric Work Order Common |
| RX | Receive |
| S&O | Search and Order |
| S&CMP | Stakeholder & Communications Management Plan |
| S-NPP | Suomi National Polar-Orbiting Partnership |
| S/C | Spacecraft |
| S/T | Straight-Through |
| S/W | Software |
| S2 | Sentinel-2 |
| S2QWG | Sentinel-2 Quality Working Group |
| S2VT | Sentinel-2 Validation Team |
| S3 | Amazon Simple Storage Service |
| SA | Spacecraft Analyst Single Access Systems Administrator Storage and Archive Subsystem System Architect |
| SA-AC | Storage Archive – Archive Cache |
| SA-IC | Storage and Archive – Internal Cache |
| SA-PC | Storage Archive – Processing Cache |
| SAA | South Atlantic Anomaly Solar Azimuth Angle |
| SaaS | Software as a Service |
| SAC | Satellite Application Centre (South Africa) |
| SADA | Solar Array Drive Assembly |
| SADD | System Algorithm Description Document |
| SAFe | Scaled Agile Framework |
| SAG | System Administrator Guide |
| SAGUI | Storage and Archive Graphical User Interface |
| SAIC | Science Applications International Corporation |
| SAM | Scan Angle Monitor Storage Archive Manager |
| SAML | Security Assertion Markup Language |
| SAMP | Software Acquisition Management Plan |
| SAN | Storage Area Network |
| SanDiA | Sankey Diagram Application |
| SANS | System Administration, Networking, and Security Institute |
| SANSA | South African National Space Agency |
| SAP | Systems Applications and Products Software Assurance Plan |
| SAPMSO | Space Asset Protection Mission Support Office |
| SAR | Synthetic Aperture Radar Spacecraft Acceptance Review |
| SARF | System Access Request Form |
| SARR | Security Assessment Response Report |
| SAS | Serial Attached SCSI Solar Array Simulator |
| SASS | Syntactically Awesome Style Sheets |
| SAT | Site Acceptance Testing |
| SATA | Serial Advanced Technology Attachment |
| SatAPI | Satellite Application Programming Interface |
| SATO | Science Algorithms to Operations |
| SAVI | Soil Adjusted Vegetation Index |
| SAW | Systems Analysis Workgroup |
| SAWG | Software Assurance Working Group |
| SB | SoftBench Simulator |
| SBA | Societal Benefit Area |
| SBAF | Spectral Band Adjustment Factor |
| SBC | Single Board Computer |
| SBCG | System Build and Configuration Guide |
| SBG | Software Build Guide Surface Biology and Geology |
| SBM | Serena Business Manager Solutions Business Manager |
| SBRS | Santa Barbara Remote Sensing |
| SBS | Subsetter System |
| SBU | Sensitive But Unclassified |
| SC | Spacecraft or Science Campaign |
| SC-GND | Spacecraft to Ground |
| SCA | Sensor Chip Assembly Snow Covered Area Security Configuration Assessment Static Code Analyzer |
| SCAMA | Switching, Conferencing, and Monitoring Arrangement Station Conferencing and Monitoring Assembly |
| SCAN | Soil Climate Analysis Network |
| SCB | Schedule Control Board |
| SCC | Stress Corrosion Cracking System Control Center Station Control Computer |
| SCD | Small Conversion Device |
| SCDR | Spacecraft Critical Design Review |
| SCES | Station Contact Execution Summary |
| SCH | Contact Schedule Message |
| SCI | Software Configuration Item |
| SCID | Spacecraft Identifier |
| SCL | Signal Conditioning Unit - Lower Equipment Module |
| SCLAST | Time Since Last Change |
| SCM | Software Configuration Management Shared Container Migration |
| SCMAG | Change Magnitude |
| SCMP | Software Configuration Management Plan |
| SCMQA | Spectral Model Quality |
| SCN | Scan |
| SCP | Standard Controls Processor Secure Copy Protocol |
| SCR | System Concept Review Software Configuration Request Standard Collection Request Special Collection Request Satellite Cross-calibration Radiometer |
| SCRC | Special Collection Request Cancellation |
| SCRIL | Smart Card Required for Interactive Login |
| SCRU | Special Collection Request Update |
| SCS | Scan-Correlated Shift Satellite Checkout Station NOAA/IPO Space and Communications Segment |
| SCSS | Sass Cascading Style Sheets |
| SCSI | Small Computer Software Interface |
| SCSTAB | Spectral Stability Period |
| SCTIME | Time of Spectral Change |
| SCTR | Special Calibration Test Requirements |
| SD | South Dakota or Scan Direction |
| SDAT | Special Data Acquisition Tool |
| SDAV | Spatial Data Analysis & Visualization |
| SDB | Satellite-derived Bathymetry |
| SDCG | Space Data Coordination Group |
| SDD | Software Design Document Station Description Document |
| SDDS | Seamless Data Distribution System |
| SDF | Software Development File |
| SDG | Sustainable Development Goals |
| SDK | Software Development Kit |
| SDLC | System Development Life Cycle Software Development Life Cycle |
| SDLT | Super DLT |
| SDM | Silo Data Manager |
| SDMP | Software Development Management Plan |
| SDN | South Dakota Network |
| SDP | Software Development Plan Science Data Production Science Data Processing |
| SDP&I | Science Data Processing and Infrastructure |
| SDPE | Science Data Processing and Engineering |
| SDPS | Support Data Processing Subsystem Science Data Processing Segment |
| SDR | System Design Review or Software-defined Radio |
| SDRAM | Synchronous Dynamic Random Access Memory |
| SDS | Scientific Data Set Space Defense Squadron |
| SDU | Service Data Unit |
| SDVF | Software Development and Validation Facility Spacecraft Development Verification Facility |
| SDW | Seamless Data Warehouse |
| SE | Systems Engineer Systems Engineering |
| SEA | Sensor Azimuth Angle |
| SeaDAS | Sea-viewing Wide Field-of-View Sensor Data Analysis System |
| SeaWiFS | Sea-viewing Wide Field-of-View Sensor |
| SEB | Source Evaluation Board |
| SEBAL | Surface Energy Balance Algorithm for Land |
| SED | Software Engineering Department Stream Editor |
| SEE | Single-Event Effect or Science Execution Environment Software Engineering Environment |
| SEFI | Single Event Functional Interrupt |
| SEI | Software Engineering Institute |
| SEIT | System Engineer Integration and Test |
| SEL | Single-Event Latchup or Software Engineer Lead |
| SELC | System Engineering Lifecycle |
| SelfDef | Self-Defining CMDA format |
| SEM | Security Engineered Machine |
| SEMP | Systems Engineering Management Plan |
| SEO | Systems Engineering Office |
| SES | Schedule and Exchange System |
| SET | Systems Engineering Team |
| SETA | Systems Engineering and Technical Assistance |
| SEU | Single-Event Upset – Anomaly Event |
| SEV | Severity or Sun-Earth-Vehicle angle |
| SEWP | Solutions for Enterprise-Wide Procurement |
| SEZ | Sensor Zenith Angle |
| SF | Service Framework |
| SFBME | Short-Form Brouwer Mean Element |
| SFC | Scene Framing Component |
| SFCG | Space Frequency Coordination Group |
| SFFT | Short-Form Functionality Testing |
| SfM | Structure from Motion |
| SFT | SIFMT File Transfer |
| SFTP | SSH File Transfer Protocol |
| Sg/SG6 | Svalbard Ground Station |
| SG1 | Svalbard, Norway |
| SGDAWG | Space to Ground Data Acquisition Working Group |
| SGI | Silicon Graphics Incorporated Shadnagar, India Ground Station |
| SGICD | Space to Ground Interface Control Document |
| SGLT | Space to Ground Link Terminal |
| SGO | Satellite and Ground Systems Operations |
| SGP4 | Simplified General Perturbations |
| SGS | Svalbard Ground Station Svalsat Ground Station |
| SGT | Stinger Ghaffarian Technologies |
| SH | Southern Hemisphere |
| SHA | Secure Hash Algorithm |
| Shapelib | Shapefile Library |
| SHC | Shutter Histogram Characterization |
| SHS | Second Half Scan |
| SHSERR | Second Half Scan Error |
| SI | Searchable Inventory Space Imaging Science Instrument International System of Units Système International or Spectral Indices |
| SIAT | Spectral Image Annotation Tape |
| SIC | Spacecraft Identifier Code |
| SID | Searchable Inventory Database or System ID |
| SIDECAR | System for Image Digitization Enhancement Control and Retrieval |
| SIEM | Security Information and Event Management |
| SIFMT | Scene to Interval to File Mapping Table |
| SIG | Signaling |
| SIP | Standard Internet Protocol |
| SiPIN | Silicon PIN |
| SIPS | Science Investigation Processing System |
| SIR | Scientific Investigations & Research Survey Investigation and Research or System Integration Review |
| SIRCUS | Spectral Irradiance and Radiance Responsivity Calibration Using Uniform Sources |
| SIRD | Satellite Instrument Requirements Document |
| SIRU | Scalable Inertial Reference Unit |
| SIS | Science Information System Spacecraft Interface Simulator Spherical Integrating Sources |
| SISO | Subsystem Information System Owner |
| SISSE | Senior Information System Security Engineer |
| SIT | Strategic Implementation Team |
| SITL | Single Interval-In-The-Life |
| SITP | Software Integration Test Plan |
| SKMP | System Key Management Plan |
| SL | Scan Line or Stim Lamp |
| SLA | Service Level Agreement Scan Line Artifact |
| SLAM | Storage Location Allocation Manager |
| SLAT | Spacecraft Location and Attitude Tape |
| SLATE | System Level Automation Tool for Enterprises |
| SLC | Scan Line Corrector Software Development Life Cycle |
| SLD | Scan Line Data |
| SLI | Sustainable Land Imaging |
| SLL | Scan Line Length |
| SLO | Scan Line Offset |
| SLOC | Standard Lines of Code |
| SLP | Service Location Protocol |
| SLPP | Summary Level Planning Package |
| SLS | Scan Line Start |
| SLSTR | Sea and Land Surface Temperature Radiometer |
| SLT | Senior Leadership Team |
| SM | Schedule Manager Scan Mirror |
| SM RVM | Science and Mission Requirements Verification Matrix |
| SMA | Safety and Mission Assurance S-Band Multiple Access Semi-Major Axis |
| SMACAA | SDSU MODTRAN Atmospheric Correction Anytime Anywhere |
| SMAP | Safety and Mission Assurance Plan |
| SMART | Space-based Machine Automated Recognition Technique |
| SMAT | System, Model, and Analysis Tool |
| SMC | Subsetter Monitor and Controllers |
| SMD | Stored Mission Data Science Mission Directorate |
| SME | Scan Mirror Electronics Subject Matter Expert |
| SMP | Software Maintenance Plan Software Management Plan |
| SMR | Staff Management Request |
| SMRD | Science and Mission Requirements Document Spacecraft Mission Requirements Document |
| SMS | System Management Server Science Modeling System |
| SMSR | Safety and Mission Success Review |
| SMTF | Sync Marked Transfer Frame |
| SMTP | Simple Mail Transfer Protocol |
| SN | Space Network |
| SNAS | Space Network Access System |
| SNMP | Simple Network Management Protocol |
| SNO | Simultaneous Nadir Overpass |
| SNR | Signal-to-Noise Ratio |
| SNS | Simple Notification Service |
| SNSA | Swedish National Space Agency |
| SNUG | Space Network Users' Guide |
| SNWG | Satellite Needs Working Group |
| SO | Search and Order |
| SOA | Service-Oriented Architecture Satellite Operator Agency |
| SOAP | Simple Object Access Protocol |
| SOC | Satellite Operations Center |
| SOCC | Satellite Operations Control Center |
| SOD | Seconds Of Day |
| SOH | State of Health |
| SOM | Space Oblique Mercator |
| SOMA | Scanning Order Management Application |
| SON | Statement of Need |
| SOO | Statement of Objectives |
| SOP | Standard Operating Procedure |
| SORN | System of Record Notice |
| SOS or S/OS | Spacecraft/Observatory Simulator |
| SOW | Statement of Work |
| SP | Special Publication |
| SPA | Science Processing Algorithm |
| SPAM | Spatial Production Allocation Model SpaceWire Access Memory |
| SPAOS | Standard Product Automatic Ordering System |
| SPARC | Scalable Processor Architecture |
| SPDR | Spacecraft Preliminary Design Review |
| SPI | Schedule Performance Index |
| SPIE | International Society for Optics and Photonics |
| SPIM | SPOT Image |
| SPIT | Systems Performance Improvement Team |
| SPITL | Scheduling Period In The Life |
| SPL | Software Project Lead |
| SPOC | Service-Oriented Architecture (SOA) Proof of Concept or Security Point of Contact |
| SPOF | Single Point of Failure |
| SPOT | Satellite Pour l'Observation de la Terre (Satellite for Earth Observation) |
| SPR | Software Problem Report |
| SPS | Science Product System SID Population Service |
| SPSR | System Preship Review |
| SPT | Science Processing Toolkit |
| SPT VDI | Science Processing Toolkit Virtual Desktop Infrastructure |
| SPVM | System Performance Verification Matrix |
| SPVP | System Performance Verification Plan |
| SQA | Software Quality Assurance |
| SQAP | Software Quality Assurance Plan |
| SQL | Structured Query Language |
| SQMS | Software Quality Management System |
| SQPSK | Staggered Quadrature Phase Shift Keying |
| SQRT | Square Root |
| SQS | Amazon Simple Queue Service |
| SR | System Review Surface Reflectance |
| sr | Steradian |
| SRAEROSOLQA | Internal Surface Reflectance Aerosol Quality Assessment |
| SRAM | Static Random Access Memory |
| SRB | Schedule Review Board Standing Review Board |
| SRCLOUDQA | Surface Reflectance Quality Assessment Band |
| SRD | System Requirements Document |
| SRE | Site Reliability Engineering |
| SRI | Standard Robot Interface |
| SRLUT | Spectral Radiance Look-Up Table |
| SRF | Spectral Response Function |
| SRI | Summation Research, Inc. |
| SRIX4Veg | Surface Reflectance Intercomparison eXercise for Vegetation |
| SRM | Silo Resource Manager |
| SRO | Systems Review Office |
| SRP | Systems Review Plan |
| SRR | System Readiness Review System Requirements Review Software Requirements Review |
| SRS | Software Requirements Specification System Requirements Specification |
| SRT | Systems Review Team Si Racha, Thailand Ground Station |
| SRTM | Software Requirements Traceability Matrix Shuttle Radar Topography Mission |
| SRV | SUBETTER_REQUEST_View |
| SS | Space Segment or System Support Signal Strength or Steady State |
| SSA | S-Band Single Access Space Situational Awareness |
| SSAI | Science Systems and Applications, Inc |
| SSC | Software Security Center |
| SSCL | Standard System Control List |
| SSD | Subsystem Design Document Solid State Drive |
| SSDLC | Secure Software Development Life Cycle |
| SSE | Subsystem Engineer |
| SSEB | Simplified Surface Energy Balance |
| SSEBop | Operational Simplified Surface Energy Balance |
| SSERB | Systems Support Engineering Review Board |
| SSG | System Support Group |
| SSH | Secure Shell |
| SSHGS | Secure Shell Gateway Service |
| SSI | Sensitive Security Information Spectral Sampling Interval Superspectral Imager |
| SSIP | System Safety Implementation Plan |
| SSL | Secure Socket Layer |
| SSM | Scene Select Mechanism Scene Select Mirror Amazon Systems Manager |
| SSO | Single Sign-On |
| SSoH | Stored State of Health |
| SSOP | Security Standard Operating Procedure |
| SSP | System Security Plan Satellite Support Plan |
| SSP-MSO | Space System Protection - Mission Support Office |
| SSPA | Solid State Power Amplifier |
| SSPP | Systems Safety Program Plan |
| SSR | Solid State Recorder Software Specification Review |
| SSRR | Spacecraft System Requirements Review |
| SSSC | Science Support Services Contract |
| SSURGO | NRCS Soil Survey Geographic Database |
| ST | System Test or Surface Temperature |
| STAC | SpatioTemporal Asset Catalog |
| STARFM | Spatial and Temporal Adaptive Reflectance Fusion Model |
| STARS | Satellite Telemetry Automatic Reduction System |
| STC | System Test Case |
| STD | Standard |
| STDEV | Standard Deviation |
| STDMP | Simulated and Test Data Management Plan |
| STDN | Spaceflight Tracking and Data Network |
| STE | System Test Equipment |
| STESR | System Test Execution Summary Report |
| STF | System Transfer Function |
| STIG | Security Technical Implementation Guide |
| STIM | Stimulus |
| STK | StorageTek Systems Toolkit |
| STOL | System Test and Operations Language |
| STP | System Test Plan |
| STQA | Surface Temperature Quality Assessment |
| STR | System Test Report Special Task Report |
| STS | Scene Transmit Schedule Security Token Service |
| STSOC | System Test and Operations Language |
| STSS | Synchronize to Secondary Server |
| STV | Spacecraft Transportation Vehicle |
| SUI | Subsetter Operator User Interface |
| SUM | Summary |
| SUMM | Software User and Maintenance Manual |
| SUN | Sun Microsystems, Inc. |
| SURFRAD | Surface Radiation Surface Radiation Budget Network |
| SUROM | Start-Up Read-Only Memory |
| SV | Space Vehicle, Schedule Variance, or Subversion |
| SvalSat | Svalbard Satellite Station |
| SVN | Sun-Vehicle-Normal angle or Subversion |
| SVT | Site Verification Test |
| SVVP | System Verification and Validation Plan |
| SW | Switch Software |
| SWAP | Size, Weight, and Power |
| SWD | Software Development |
| SWE | Software Engineer |
| SWG | Simulator Working Group Standards Working Group |
| SWIR | Short Wavelength Infrared Shortwave Infrared |
| SWOT | Strength, Weakness, Opportunity, and Threat Surface Water and Ocean Topography |
| SYS | Systems |
| SZA | Solar Zenith Angle |
| T | Temperature |
| T&A | Trending and Analysis Trending & Archive |
| T&C | Telemetry and Command |
| T&E | Testing and Evaluation |
| T/V | Thermal/Vacuum |
| T1 | Tower 1 Tier 1 |
| T2 | Tower 2 Tier 2 |
| T382 | Triangular 382 |
| Ta | Maximum daily air temperature |
| TAA | Technical Assistance Agreement |
| TAI | International Atomic Time |
| TAM | Three-Axis Magnetometer |
| TAMR | Telemetry Archive Metrics Report |
| TAP | Technical Assessment Panel Time-series Analysis and Plotting |
| TAR | Tape Archiver |
| TAT | Turn-Around-Time |
| TAYF | Test As You Fly |
| TB | Terabyte |
| TBC | To Be Confirmed |
| TBD | To Be Determined |
| TBDEM | Topobathymetric Digital Elevation Model |
| TBR | To Be Resolved To Be Reviewed To Be Refined |
| TBS | To Be Submitted To Be Supplied To Be Specified To Be Scheduled |
| TC | Test Case Test Conductor Thermal Control Tasseled Cap |
| TC0AOS | TIRS Collection 0 Automatic Ordering System |
| TC1AOS | TIRS Collection 1 Automatic Ordering System |
| TCA | Time of Closest Approach |
| TCDC | Total Cloud Cover |
| TCO | Total Cost of Ownership |
| TCP | Transmission Control Protocol Technology Control Plan |
| TCP/IP | Transmission Control Protocol/Internet Protocol |
| TCPI | To Complete Performance Index |
| TCS | Thermal Control Subsystem |
| TCXO | Temperature-Compensated Crystal Oscillator |
| TD | Test Director |
| TDB | Barycentric Dynamical Time |
| TDEA | Triple Data Encryption Algorithm |
| TDF | Tracking Data Formatter Time-Dependent Factor |
| TDG | Test Data Generator |
| TDI | Time Delay Integration |
| TDMS | Technical Data Management System |
| TDR | Test Discrepancy Report Trusted Digital Repository |
| TDRS | Tracking and Data Relay Satellite |
| TDRSS | Tracking and Data Relay Satellite System |
| TDT | Terrestrial Dynamical Time |
| TDWG | Test Dataset Working Group |
| TDY | Temporary Duty |
| TE | Test Engineer |
| TEM | Technical Exchange Meeting |
| TERSS | Tasmanian Earth Resources Satellite Station Consortium |
| TES | Thermal-Emissivity Separation |
| TESR | Test Execution Summary Report |
| TFA | Two-Factor Authentication |
| TFDH | Telemetry Frame Delivery Header |
| TFF | TIRS Free Flyer |
| TGS | Tile Generation System |
| tHC | The Hammers Company |
| TIC | Trusted Internet Connection |
| TICD | Thermal Interface Control Document |
| TID | Total Ionizing Dose |
| TIFF | Tagged Image File Format |
| TIM | Technical Interchange Meeting Technical Issue Memorandum Thermal Infrared Module |
| TIPCE | TIRS-2 Image Performance and Cryogenic Evaluation |
| TIR | Thermal Infrared |
| TIROS | Television InfraRed Observation Satellite |
| TIRS | Thermal Infrared Sensor Thermal Infrared Scanner |
| TIRS-2 | Thermal Infrared Sensor -2 |
| TIS | Thermal Infrared Sensor TIRS Interface Simulator Teledyne Imaging Sensor Corp. |
| TIU | Tape Interface Unit |
| TL8AOS | TIRS Landsat 8 Automatic Ordering System |
| TL8CAOS | TIRS Landsat 8 Collection Automatic Ordering System |
| TLE | Two-Line Element |
| TLM | Telemetry |
| TLS | Transport Layer Security |
| TM | Thematic Mapper Traverse Mercator Task Manager Test Modulator |
| TM-A | Thematic Mapper - Archive Format |
| TM-R | Thematic Mapper - Raw Format |
| TMACS | Thematic Mapper and Multispectral Scanner Archive Conversion System |
| Tmask | Time-series Mask multiTemporal Mask |
| TMIAS | Thematic Mapper Image Assessment System |
| TML | Total Mass Loss |
| TMON | Telemetry Monitor |
| TMR | Thermal Mapper Raw |
| TMS | Training Management System |
| TMSCAG | Thematic Mapper-based Fractional Snow Cover and Grain Size |
| TMSG | Terrain Mapping Subgroup |
| TMSR | TSSC Monthly Status Report |
| TMSS | TM Subsetter |
| TnB | Thumbnail Browse |
| TNOC | Tromso Network Operations Center |
| TNOS | Tromso Network Operations Centre |
| TNS | Transport Network Substrate |
| TO | Task Order Terrain Occlusion |
| TOA | Top of Atmosphere |
| TOA BT | Top of Atmosphere Brightness Temperature |
| TOAR | Top of Atmosphere Reflectance |
| TOMS | Total Ozone Mapping Spectrometer |
| TOMS-EP | Total Ozone Mapping Spectrometer-Earth Probe |
| TOR | Terms of Reference |
| TOV | TIROS Operational Vertical Sounder |
| TP | Task Plan or Trimmed Pass |
| TPIO | Technology, Planning and Integration for Observation |
| TPL | Telemetry Packetization Layer |
| TPM | Technical Performance Measures |
| TPS | Test Procedure Specification |
| TPU | Total Propagated Uncertainty |
| TQCM | Thermoelectric Quartz Crystal Microbalance |
| TRAD | Thermal Radiance Layer |
| TRAM | Tracking, Routing, and Metrics |
| TRAMAOS | Tracking, Routing, and Metrics Automatic Ordering System |
| TRD | Technical Requirements Document |
| TREES | Tropical Ecosystem Environment Observations by Satellite |
| TRN | Technical Redirection Notice |
| TRR | Test Readiness Review |
| TRT | Transition Readiness Test |
| TS | TIRS-2 Simulator |
| TSI | Honeywell Technology Solutions Inc. |
| TSR | Technical Service Request |
| TSSC | Technical Support Services Contract |
| TST | Technical Support Team |
| Tsync | T-Interface Synchronization |
| TT | Terrestrial Time |
| TT&C | Telemetry, Tracking, and Control |
| TT&E | Test, Training, and Exercise |
| TTF | TIRS Test Facility |
| TTL | Transistor-Transistor Logic |
| TTMS | TSSC Task Management System |
| TTOR | Transition To Operations Review |
| TTPs | Tactics, Techniques, and Procedures |
| TURFTS | TDRS Users RF Test Set |
| TUTR | Tunable Universal Track Receiver |
| TÜBITAK | Scientific and Technological Research Council of Turkey |
| TVAC | Thermal Vacuum |
| Tw//DTW | Time-Weighted Dynamic Time Warping |
| TWITL | Total WRS-2 in the Life |
| TWM | Task and Work Management |
| TWTA | Traveling-Wave Tube Amplifier |
| TX | Transmit |
| U/C | Up Converter |
| U/L | Uplink |
| U/P | Uplink Processor |
| UAC | User Account Control |
| UAE | United Arab Emirates |
| UAF | University of Alaska, Fairbanks |
| UAR | Update as Required |
| UAS | Unmanned Aerial System Uncrewed Aerial System |
| UB | Undistributed Budget |
| UDI | Uplink Downlink |
| UDM | Unusable Data Mask |
| UDP | Upper Data Point User Datagram Protocol |
| UDT | UDP Data Transfer |
| UG | User's Guide |
| uhd | User's Home Directory |
| UI | User Interface |
| UIC | User Interface Compile |
| UID | Unique Identifier |
| UINT8 | 8-bit Unsigned Integer |
| UIS | USGS Inventory Server |
| UKSA | United Kingdom Space Agency |
| UL | Upper Left |
| ULA | United Launch Alliance |
| ULC | Update LGN Cache |
| UM | Unified Messaging |
| UML | Unified Modeling Language |
| UNEP | United Nations Environment Programme |
| UNESCO | United Nations Educational, Scientific and Cultural Organization |
| UNIX | Bell Laboratories trademark for operating system language and time sharing |
| unixODBC | Unix Open Database Connectivity |
| UNOOSA | United Nations Office for Outer Space Affairs |
| UNT | Unsigned Integer |
| UP | User Portal System |
| UPE | User Portal Element |
| UPS | Uninterruptible Power Supply Universal Polar Stereographic |
| UPW | User Portal Website |
| UQPSK | Unbalanced Quadrature Phase Shift Keying |
| UR | Upper Right User Request |
| URAD | Upwell Radiance Layer |
| URI | Uniform Resource Identifier |
| URL | Uniform Resource Locator |
| URP | User Request Parameters |
| URS | User Registration System |
| US | United States |
| USAF | United States Air Force |
| USAID | U.S. Agency for International Development |
| USB | Universal Serial Bus |
| USC | United States Code |
| USDA | U.S. Department of Agriculture |
| USFS | United States Forest Service |
| USG | U.S. Government |
| USGS | U.S. Geological Survey |
| USML | United States Munitions List |
| USNO | U.S. Naval Observatory |
| USPS | U.S. Postal Service |
| USSF | United States Space Force |
| USSTRATCOM | U.S. Strategic Command |
| UT | Universal Time Unit Test |
| UT1 | UTC Corrected |
| UTC | Universal Time Code Coordinated Universal Time |
| UTM | Universal Transverse Mercator |
| V&V | Verification and Validation |
| VA | Veterans Administration Department of Veterans Affairs |
| VAA | Viewing Azimuth Angle |
| VAC | Variance at Completion Volts AC |
| VAFB | Vandenberg Air Force Base |
| VAL | Validation |
| VAP | Value-Added Processor |
| VAR | Value-Added Resellers Variance Analysis Report |
| VAST | Vietnam Academy of Science and Technology |
| VC | Virtual Channel |
| VC63 | Virtual Channel 63 |
| VCA | Virtual Channel Access |
| VCDU | Virtual Channel Data Unit |
| VCID | Virtual Channel Identifier Virtual Channel Identification |
| VCLC | Virtual Channel Link Control |
| VCM | Vector Covariance Message |
| VDC | Virtual Data Center Volts Direct Current |
| VDD | Version Description Document |
| VDI | Virtual Desktop Infrastructure |
| VDP | Validation Data Products |
| VER | Version |
| VF | Valley Forge |
| VHRI | Very High-Resolution Imager |
| VH-RODA | Very High-resolution Radar & Optical Data Assessment |
| VI | Vegetation Index |
| VIIRS | Visible Infrared Imager Radiometer Suite |
| VIS | Visual Information Systems |
| VisID | Visual Identification |
| VLAN | Virtual Local Area Network |
| VLUT | Vendor Look-Up Table |
| VM | Version Manager |
| VMM | Virtual Machine Manager |
| VMS | Virtual Memory Storage |
| VNIR | Visible and Near Infrared |
| VNP09 | VIIRS Surface Reflectance |
| VO | Verification Owner |
| VOI | Value of Information |
| VOIP | Voice Over Internet Protocol |
| VP | Vertical Polarization |
| VPC | Virtual Port Channel Virtual Private Cloud |
| VPN | Virtual Private Network |
| VQA | Visual Quality Assurance |
| VRM | Verification Requirements Matrix |
| VRP | Video Reference Pixel |
| VRS | Vertical Resampling Space |
| VSD | Volume Size Distribution |
| VSFB | Vandenberg Space Force Base |
| VSM | Versity Storage Manager |
| VSWIR | Visible to Short Wavelength Infrared |
| VTI | Value Tree Information |
| VTL | Verification Tracking Log |
| VTP | Verification Test Procedures |
| VTW | Value Tree Workbook |
| VVP | Verification and Validation Plan |
| VZA | Viewing Zenith Angle |
| W3C | World Wide Web Consortium |
| WA | Work Authorization |
| WAD | Work Authorization Document |
| WAF | Web Application Firewall |
| WAN | Wide Area Network |
| WAO | Work Authorization Order |
| WB | Wideband |
| WBDR | Wideband Downlink Report |
| WBM | Wideband Module |
| WBS | Work Breakdown Structure |
| WBV | Wideband Video |
| WBVT | Wideband Videotape |
| WC | Worst Case |
| WCS | Web Coverage Services |
| WDCD | Wideband Data Capture Device |
| WELD | Web-Enabled Landsat Data |
| WFS | Web Feature Services |
| WG | Working Group |
| WGClimate | Working Group on Climate |
| WGCV | Working Group for Calibration and Validation |
| WGISS | Working Group on Information Systems and Services |
| WGRIB | Web Gridded Information in Binary Form |
| WGS | World Geodetic System or Wallops Ground Station |
| WGS84 | World Geodetic System 1984 |
| WGSC | Western Geographic Science Center |
| WILMA | Wide Long-Term Multi-Satellite Archive |
| WIP | Work In Progress |
| WITL | WRS2-In-The-Life Week in the Life |
| WLS | Weighted Least Square |
| WMO | World Meteorological Organization |
| WMS | Web Mapping Services |
| WMTS | Web Mapping Tile Services |
| WO | Work Order |
| WORS | Wallops Orbital Tracking Station |
| WOTIS | Wallops Orbital Tracking Information Systems |
| WP | Work Plan or Work Package |
| WPI | Wetland Potential Index |
| WPS | Wallops Ground Station |
| WR | Western Range |
| WRD | Water Resources Division |
| WRS | Worldwide Reference System |
| WRS-2 | Worldwide Reference System-2 |
| WRS2TT | Worldwide Reference System-2 to Time Translation |
| WRS2TTT | Worldwide Reference System-2 to Time Translation Table |
| WSC | White Sands Complex |
| WSDL | Web Service Definition Language |
| WSGI | Web Server Gateway Interface |
| WSGT | White Sands (NASA) Ground Terminal |
| WS-I | Web Services Interoperability |
| WSL | Windows Subsystem for Linux |
| WVTCS | Wideband Videotape Conversion System |
| WWW | World Wide Web |
| WYSIWYG | What You See Is What You Get |
| XGBoost | eXtreme Gradient Boosting |
| XIB | Transmitter Interface Board |
| XML | Extensible Markup Language |
| XS | Multispectral SPOT Sensor |
| XSD | XML Schema Definition |
| XSS | Cross-Site Scripting |
| XT | Across Track |
| XTX | X-Band Transmitter |
| YAML | YAML Ain’t Markup Language Yet Another Markup Language |
| YGC | Yaw Gyro Compassing |
| YH | Yellow-High |
| YL | Yellow-Low |
| YSF | Yaw Steering Frame |
| YTD | Year-To-Date |
| Z | Zulu time (same as GMT) |
| ZB | Zettabyte |
| ZFS | Zettabyte File System |