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Landsat Acronyms

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A&A  Archive and Access or Associate Administration

A&E  Access and Exploration

A&P  Archive and Production

A&P OPS  Archive and Production Operations

AA  Active Archive or Alternative Analysis or 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

ABML  As-Built Materials List

ABPL  As-Built Parts List

ABS  Absolute

AC  Alternate Current or Archive Cache or Actual Cost

ACCA  Automated Cloud Cover Assessment or Actual Cloud Cover Average

ACK  Acknowledgement

ACL Access Control List

ACQ  Acquired Scenes Report

ACRES  Australian Center for Remote Sensing

ACS  Attitude Control System

ACSLS  Automated Cartridge System Library Software

ACTHom  Average Cross-Track Homogeneity

ACU  Antenna Control Unit

ACWP  Actual Cost of Work Performed

A/D  Analog/Digital

AD  Active Directory or Associate Director

ADA  Angular Displacement Assembly or Attitude Displacement Assembly

ADAT  Application and Data Assessment

ADC  After DC Restore or Ancillary Data Corrector or Analog-to-Digital Conversion

ADD  Algorithm Description Document

ADF  Ancillary Data File

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 or Angular Displacement Sensor or Archive Data Stager

ADSA  Attitude Displacement Sensor Assembly

ADVP  Algorithm Development and Verification Plan

AE  Archive Element

AEA  Albers Equal Area

AEM  Auxiliary Electronics Module

AES  Advanced Encryption Standard

AETD  Applied Engineering and Technology Directorate

AFB  United States Air Force Base

AFM Anomalous Frame Manager

AFOV  Angular Field of View

AFWA  Air Force Weather Agency

AGC  Automatic Gain Control

AGE  Automated Ground Equipment

AGS  Alaska Ground Station

AGU  American Geophysical Union

AIM  Algorithm Integration Meeting

AIP  Archival Information Package

AIS  Automated Information Security

AIT  Algorithm Implementation Team

AJAX  Asynchronous Java Script and XML

ALI  Advanced Land Imager

ALIAS  Advanced Land Image Assessment System

AM  Artifact Mask

AMP  Allocation Management Planner

AMTS  Asset Management Tracking System

AN  Ascending Node

ANC  Ancillary File

ANGCF Angle coefficient

ANN  Annotation File

ANSI  American National Standards Institute

ANSS  Advanced National Seismic System

ANTLR  Another Tool for Language Recognition

AO  Authorization Official or Authorizing Official

AOI  Area of Interest

AOS  Acquisition of Signal or Arrival On-Site or Automated Ordering System

APAC  Acquisition Procurement Advisory Council

API  Application Programming Interface

APID  Application Identification

APMC  Agency Program Management Council

APO  Accountable Property Officer

AQ  Advanced Queuing

AQPK  Asynchronous Quadrature Phase Shift Keying

AR  Archive or Axial Ratio or Acceptance Review

ARB  Anomaly Review Board

ARD  nalysis Ready Data

ART Anomaly Resolution Team

AS  Archive Server

ASA  Archive Server Application or Alice Springs [Station] Australia

ASB Administrative Services Branch

ASCII  American Standard Code for Information Interchange

ASGUI  Archive Server Graphical User Interface

ASHRAE  American Society of Heating, Refrigeration and Air-Conditioning

ASIC  Application Specific Integrated Circuit

ASN  Alice Springs Ground Station or Australian Network

ASPRS  American Society of Photogrammetry and Remote Sensing

ASQC  American Society for Quality Control

AST  Active Scan Time

ASTER  Advanced Spaceborne Thermal Emission and Reflection

ASTM  American Society for Testing of Materials

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

ATS  Absolute Time Sequence or Automatic Transfer Switch

ATT  Authorization to Test

AU  Astronomical Units

AUI  Analyst User Interface

AVHRR  Advanced Very High Resolution Radiometer

AVI  Audio Video Interleave

AVPD  Avtec Programmable Demodulator

AVT  Algorithm Verification Test

AWiFS  Advanced Wide-Field Sensor

AWMr  Analytical Workspace Manager



B&A   Billing & Accounting

B1  Build 1

B2B  Band-to-Band

B2BCal  Band-to-Band Calibration

BA  Billing and Accounting or Burned Area

BAC  Budget at Completion

BAD  Block Address Data

BASIS+  Budget and Science Information System Plus

BATC Ball Aerospace & Technology Corporation

BBC  Black Body Calibrator

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

BER  Bit Error Rate

BERT  Bit Error Rate Test

BG  Build Guide

BIA  Business Impact Analysis or Business Impact Assessment

BIH  Bureau International de l'Heure

BIL  Band Interleaved by Line

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  Bangkik, Thailand Ground Station

BLM  Bureau of Land Management

bLMOC  Backup Landsat Multi-Satellite Operations Center

BME  Browser Mean Element

BMO  Business Management Office

BMOC  Backup Mission Operations Center

BMOE  Backup Mission Operations Element

BN  Background Noise

BOC  Budget Object Class

BOE  Basis of Estimate

BOM  Bill of Materials

BP  Bias Parameter

BPA  Blanket Purchase Agreement

BPAL  Best Practices Asset Library

BPDU  Bitstream Protocol Data Unit

BPF  Bias Parameter File

BPG  Bias Parameter Generator

BPSK  Biphase Shift Keying

BRAA  Band Registration Accuracy Assessment

BRAT  Bit Rot Assessment Tool

BRDF  Bi-directional Reflectance Distribution Function

BRDF-n  Normalized Bi-directional Reflectance Distribution Function

BRDF-s  Spectral Bi-directional Reflectance Distribution Function

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

BTC  Bench Test Cooler

BTF  Ball Test Facility

BTI  Blank Tape Interface

BUI  Bumper mode User Interface

BUTST  Bureau Unix Technical Support Team

BVR  Boast Voltage Regulator

BWTST  Bureau Windows Technical Support Team



C  Centigrade

C&DH  Command and Data Handling

C&A  Certification and Accreditation

C&T  Command and Telemetry

C&T DB  Command and Telemetry Database

C0  Coefficient 0

C1  Coefficient 1

C2  Coefficient 2

C3S  NPOESS Command, Control, and Communications Segment

CA  Conjunction Assessment or Control Account or Cost Account

CADU  Channel Access Data Unit

CAGE  Commercial and Government Entity

CAL  Calibration Data

CalManWG  Calibration Maneuver Working Group

CALTest  Calibration/Validation Test

Cal/Val  Calibration/Validation

CAM  Control Account Manager or Command Authorization Meeting or Communications Security Account Manager

CAOS  Collection Automatic Ordering System

CAP  Cartridge Access Port or Control Account Plan

CAPE  Collection Activity Planning Element

CAPERD CAPE Requirements Document

CARA  Conjunction Assessment Risk Analysis

CARD  Constraints and Restrictions Document

CASA  Cloud And Cloud Shadow Assessment

CA-WAD  Cost Account Work Authorization Document

CBA  Cost Benefit Analysis

CBB  Contract Budget Base

CBC  Cipher Block Chaining

CBG  Configuration and Build Guide

CBN  Cuiaba Earth Station

CC  Cubic Convolution or Computer Compatible Tape or Cloud Cover

CCA  Cloud Cover Assessment  or Clinger-Cohen Act

CCB  Configuration Control Board

CCD  Charge-Coupled Device

CCDC  Continous Change Detection and Classification

CCE  Cryocooler Electronics

CCI  Controlled Cryptographic Item

CCL  Commerce Control List

CCM  Cloud Cover Manager

CCMS  Combined Cache Management Subsystem

CCOH  Cost Center Overhead

CCP  Configuration Change Process or Contamination Control Process or Cloud Cover Prediction

CCR  Configuration Change Request

CCRS  Canada Center for Remote Sensing

CCS  COI Cleanup System or Confirmed Contact Schedule or Constellation Coordination System

CCSDS  Consultative Committee for Space Data Systems

CCT  Computer Compatible Tape or Credit Card Transaction

CD  Change Directory or Compact Disk

CDB  Centralized Database

CDBS  Centralized Database System

CDE  Common Desktop Environment

CDED   Canadian Digital Elevation Dataset

CDH  Command and Data Handling

CDI  Capture Device Identifier

CDLR  Command Data Loss Report

CDMS  Carrier Doppler Measurement System

CDR  Critical Design Review or Calibration Data Record or Climate Data Records

CDRL  Contract Data Requirements List or Command Data Loss Report

CD-ROM  Compact Disk-Read Only Memory

CDS  Coded Data Segment or Comprehensive Discrepancy System

CDT  Central Daylight Time or CPF Distribution Tool

CE  Circular Error or Cognizant Employee

CE90   Circular Error 90

CEER  Critical Event Readiness Review

CEOS  Committee on Earth Observing Satellites

CER  Cost Estimating Relationship

CERT  Community Emergency Response Team

CES  Cost Element Structure

CF  Correction Factor or Cloud Fraction

CFC  Contact Forecast Confirmation or Cloud Fraction Climatology

CFDP  CCSDS File Delivery Protocol

CFL  Conflict Notice

CFMask  C version of Fmask

CFP  Cold Focal Plane

CFPA  Cold Focal Plan Array or Cold Focal Plane Assembly

CFR  Code of Federal Regulations or Contact Forecast Request

CGB  Calculated Gains and Biases

CI  Configuration Item  or Continuous Integration

CIA  Confidentiality, Integrity, and Availability

CIB  Controlled Image Base

CIC Computer Interrupt Code

CIIL  Configuration Item Identifier List

CIL Critical Items List

CIO  Chief Information Officer

CIRC  Computer Incident Reporting Center

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

CLCW  Command Link Control Word

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 or Center of Mass

CMB  Change Management Board

CMC  Center Management Council

CMD  Command

CMG  Climate Modeling Grid

CMM  Capability Maturity Model

CMMI  Capability Maturity Model Integration

CMO  Configuration Management Office

CMP  Configuration Management Plan or Change Management Plan

CMS  Content Management System

CN  Coherent Noise

CNDs  Could-Not-Duplicates

CNES  Centre National d’Etudes Spatiales

CNNS  Committee on National Security Service

CNR  Carrier-to-Noise Ratio

CO  Contract Officer or Content Owner

COA  Cordoba, Argentina Ground Station

COC  Certificate of Completion or Cost of Consequence

COFUR  Cost of Fulfilling a User Request

COG  Center of Gravity or Continuity of Government

COI  Common Order Interface

COIGUI  Common Order Interface Graphical User Interface

COLA  Collision Avoidance

COMM  Communications Subsystem

COMSEC  Communications Security

CONAE  Commission Nacional De Actividades Espaciales

Con Ops  Concept of Operations

CONUS  Continental United States

COOP  Continuity of Operations

COP  Contingency Operating Procedure

COR  Contracting Officer Representative or Cost of Reproduction

COTR  Contracting Officer’s Technical Representative

COTS  Commercial Off-The-Shelf

CP  Calibration Parameter or Change Proposal

CPAF  Cost Plus Award Fee

CPC  Contingency Plan Coordinator

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 or COMSEC Security Plan

CPT  Comprehensive Performance Test

CPU  Central Processing Unit

CR  Central Repository or Controlled Repository or Change Request or Contingency Reserve or Carriage Return or Confirmation Review

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  NOAA Big Data Cooperative Research and Development Agreement

CRaM  Combined Radiometric Model

CRC  Cyclic Redundancy Check or Cyclic Redundancy Code

CRDEV  Central Repository Development

CRIT  Central Repository Integration and Test

CRM  Customer Relationship Management or Continuous Risk Management

CRMP  Continuous Risk Management Plan

CRMT  Contingency Response Management Team

CROPS  Central Repository Operations

CRS  CDF Retrieval Subsystem

CRSSGS  China Remote Sensing Satellite Grand Station

CRST  Central Repository System Test

CRTEST  Central Repository Test

CS  Customer Service

CSA  Configuration Status Accounting or Commissioning Support Area

CSAM  Cyber Security Assessment Management

CSC  Computer Software Component

CSCI  Computer Software Configuration Item

CSIRT  Computer Security Incident Report Team

CSIS  Control and Schedule Interface System

CSMO  Chief Safety and Mission Assurance Officer

CSO  Communication Services Office or Chief Safety and Mission Assurance Officer

CSOP  COMSEC Standard Operating Procedure

CSR  Capture Success Rate or Capture Success Ratio or Customer Service Representative

CSS  Cascading Style Sheet or Central Security Service

CSU  Computer Software Units

CSV  Comma Separated Values

CTDiff  Cross-Track Difference

CTE  Calibration Test Equipment or Compatibility Test Equipment

CTHome  Cross-Track Homogeneity

CTP  Command and Telemetry Processors

CTS  Capture Transfer Subsystem

CTV  Compatibility Test Van

CUB  Cuiba, Brazil Ground Station

CUI  CPF User Interface or Controlled Unclassified Information

CV  Command Verification or Cost Variance

CV-5  Calibration and Validation 5

CV-7  Calibration and Validation 7

CVCDU  Coded Virtual Channel Data Unit

CVCM  Collected Volatile Condensable Material or 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 Tool Kit

CVTKRD  Calibration and Validation Toolkit Requirements Document

CVWG  Calibration-Validation Working Group

CW  Continuous Wave

CWBS  Contractor Work Breakdown Structure

CY  Contract Year



D&M  Development and Maintenance

D1R  DMS Generate L1R

D3  50GB Data tape cartridge from StorageTek

DA  Document Administrator

DAAC  Distributed Active Archive Center

DACA  Days After Contract Award

DAE  Data Acquisition Element

DAF  Data Acquisition Facility

DAG  Database Administrator Guide

DAM  Data Acquisition Manager or Database for Analysis and Modeling

DAP  Data Acquisition Plan or Data Acquisition Planner

DAR  Data at Rest

DART  Data Access Restriction Tool

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

DBA  Database Administrator

DBaaS  Database as a Service

DBAR  Database Access  Routines

DBCA  Database Configuration Assistant

DBCI  Database Configuration Item

DBDD  Database Design Description  or Database Description Document

dB-Hz  Decibel-Hertz

dBi  Decibel above isotropic

DBI  Database Interface

dB/K  Decibel per Degree Kelvin

DBMS  Database Management System

DBS  Data Services Branch

dBW  Decibel Relative to 1 Watt

D/C  Down Converter

DC  Direct Current

DC&P  Data Capture and Processing Facility

DCAA  Defense Contract Audit Agency

DCCB  DHF Configuration Control Board or Development Configuration Control Board

DCE  Data Collection Event

DCG  DMS Generate Custom GCPLib

DCN  Document Control Number or Document Change Notice

DCO  DMS Capture Order

DCOI  Data Center Optimization Initiative

DCP  Data Collection Planners

DCPF  Data Capture & Processing Facility

DCR  Document Change Request

DCRS  Data Collection and Routing Subsystem or Data Collection and Routing System

DCRSf  Data Collection and Routing Subsystem file router or Data Collection and Routing System file router

DCRSi  Data Collection and Routing Subsystem interval router or Digital Cassette Recorder System Incremental

DCRSUI  Data Collection and Routing Subsystem User Interface

DCS  Data Capture System or Data Characterization Subsystem or Destination Control Statement

DCT  Digital Cassette Tape

DDD  Displacement Damage Dose

DDI  DCS Data Ingest

DDL  Database Definition Language

DDR  Data Descriptor Record

DDRC  DPAS Design Reference Case

DDS  DCS Database Server or Database Distribution Subsystem

DDT  DPAS Test Team

DDV  Dense Dark Vegetation

DE  Definitive Ephemeris

DEF  Definitive Ephemeris Product

Delta-I  Delta-Inclination

DEM  Digital Elevation Model

DEPEPH  Definitive Ephemeris Product

DES  Station Description Message or DAAC Emergency System

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

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

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 or Data Instrumentation System

DiTL  Day in The Life

DIV  Data Integrity Validation

DKI  Parepare, Indonesia Ground Station

D/L  Downlink

DLT  Digital Linear Tape

DM  Data Management or Document Management or Data Manager

DMA  Direct Memory Access or Defense Mapping Agency

DMAPI  Data Manager Application Programmer Interface

DMB  Data Management Branch

DME  Development, Modernization, and Enhancement

DMF  Data Migration Facility

DMI  DCRS to MOE Interface

DMID  Data Management and Information Delivery

DML  Data Manipulation Language

DMP  Document Management Plan or Data Management Policy

DMR Detailed Mission Requirements

DMS  Data Management Subsystem or Degrees, Minutes, Seconds

DMSP  Defense Meteorological Satellite Program

DMU  Data Migration Utility or Drag Make-Up

DMZ  Demilitarized Zone

DN  Descending Node or Digital Number

DNS  Domain Name Server or Domain Name System

DO  Delivery Order

DOC  Department of Commerce

DoD  Department of Defense

DOI  Department of Interior or Digital Object Identifier

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

DOY  Day-of-Year

DP  Data Processing

DPA  Destructive Physical Analysis

DPAS  Data Processing and Archive System

DPASRD  Ddata Processing and Archive System Requirements Document

DPD  DMS Placement Daemon

DPL  DMS Process L0R

DPMC  Directorate Program Management Council

DPR  DMS Process ROLO Report

DPP  DMS Packet and Placement

DPS  Data Processing Subsystem or Data Processing System

DQA  Data Quality Analyst

DQV  Data Quality Validation

DR  Delivery Record or Discrepancy Report or Disaster Recovery or Design Review

DRA  DMS Retrieve Ancillary

DRAC  Dell Remote Access Controller

DRB  Discrepancy Review Board

DRC  Data Requirements List

DRC-16  16-day Design Reference Cage

DRE  DMS Retrieve Elevation

DRFP  Draft Request for Proposal

DRM  DMS Resource Manager

DRP  Disaster Recovery Plan

DRSF  Daily Request Status File

DRTS  Data Reporting and Tracking Subsystem

DSB  Data Service Branch

DSI  DMS Subsetter Interface

DSL   Days-Since-Launch

DSN  Deep Space Network

DSS  Data Staging System or DPAS Subsetter

DST   Data Support Team

DSW  DMS Setup Work Order

DSWE  Dynamic Surface Water Extent

DTED  Digital Terrain Elevation Data

DTG  Day Time Group

DTO  Data Transfer Object

DTR  Document Transfer Request

DTS  Development and Training Simulations

DUI  Data Manager User Interface or DMS Universal L0R Ingest

DUNS  Data Universal Numbering System


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

EA  Enterprise Architecture

EAC  Estimate at Completion

EAR  Export Administration Regulations

EAS  Evaluation and Analysis Subsystem

EASI  Enterprise Architecture Study Implementation

EAST  EROS Architecture Study Team

Eb  Energy per Bit

EBAS  EROS Billing and Accounting System

Eb/N0  Energy per Bit to Noise

EC Electronic Copy

ECC  Error Correction Code

ECEF  Earth-Centered, Earth-Fixed

ECF  Earth Centered Fixed

ECI  Earth Centered Inertial

ECITOD  Earth Centered Inertial TRUE of Date

ECIMOD  ECI Mean of Date

ECL  Emitter-Coupled Logic

ECMP  EROS Contingency Plan Management

eCPIC  Electronic Capital Planning and Investment Control

ECR  Earth Centered Rotating

ECS  EOSDIS Core System

ECU  End Cryptographic Unit

ECV  Essential Climate Variable

EDAC  Error Detection and Correction

eDAR  Enterprise Data At Rest

EDC  EROS Data Center

EDDDR  EDC Daily Discrepancy Report or EDC Daily Data Received Report

EDG  EOS Data Gateway

EDOS  EOS Data Processing Segment

EDU  Engineering Development Unit

EE  Earth Explorer

EEE  Electrical, Electronic, Electromechanical

EEMT  EROS Executive Management

EEO  Equal Employment Opportunity

EF  Earth-Fixed

EFS  Encrypting File System

E-Government  Electronic Government

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

EL1PS  EDC Level 1 Prototype System

ELV  Expendable Launch Vehicle

e-mail  Electronic Mail

EMC  Electromagnetic Compatibility

EMD  Enhanced Metadata

EMI  Electromagnetic Interference

EMP  Electromagnetic Pulse

EMV  Expected Monetary Value

EN  EarthNow!

ENVI  Environment for Visualizing Images

EO  Earth Observing

EO-1  Earth Observing 1

EOC  Earth Observation Center

EOF  End-of-File

EOIS  Earth Observation Data & Information Systems

EOL  End-of-Line

EOM  End of Mission

EOMP  End of Mission Plan

EOP  Executive Office of the President

EOS  Earth Observing System

EOSAT  Earth Observation Satellite Company

EOSDIS  EOS Data and Information System

EPA  Euler Parameter or ESD Protected Area

EPF ETM+ Processing Facility

EPGN EOS Polar Groundstation 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

ERR  Error

ERS  EROS Registration Service

ERTS  Earth Resources Technology Satellite

ESA  European Space Agency or Earth Sensor Assembly

ESB  Enterprise Service Bus

ESD  Earth Science Division or Electrostatic Discharge

ESDIS  Earth Science Data and Information System

ESF  Edge Spread Function

ESM  Equipment Support Module

ESMO  Earth Science Mission Operations

ESN  Enterprise Services Network

ESP  Encapsulating Security Payload or Engineering Specialty Plans

ESPA  EROS Science Processing Architecture

ESRIN  European Space Research Institute

ESUN  Solar Spectral Irradiance

ETC  Estimate to Completion

ETE  End to End

ETL  Extraction, Translation, Load

ETM  Enhanced Thematic Mapper

ETM+  Enhanced Thematic Mapper Plus

ETMDSS  Enhanced Thematic Mapper Plus Data Subsetting Subsystem

ETRO  Estimated Time of Return to Operations

ETV  Expected Time Value

EU  Engineering Unit

EV  Earned Value

EVDCU  Extended Virtual Channel Data Unit

EVM  Earned Value Management

EVMS  Earned Value Management System

EVP  Environmental Verification Plan

EVS  Earth-Vehicle-Sun angle or Earned Value System

EVT  Enhanced Value Technique

e-WAD  Employee Work Authorization Document

EWR  Eastern and Western Ranges

EWW  Extended Work Week



F&PS   Functional and Performance Specification

FA  Formulation Authorization

FAC  Full Aperture Calibrator

FAD Formulation Authorization Document

FAI  Federal Acquisition Institute

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

FC  Formulation Contractor or Fiber Channel

FCA  Functional Configuration Audit

FC-AL  Fiber Channel-Arbitrated Loop

FCDAS  Fairbanks Command and Data Acquisition Station

FD  Flight Dynamics

FDAC  Failure Detection and Control

FDC  Failure Detection and Correction

FDD  Facilities Definition Document or Format Description Document

FDDI  Fiber-Distributed Data Interface

FEP  Front End Processor

FDF  Flight Dynamics Facility

FDIR  Fault Detection, Isolation, & Recovery

FDS  Flight Dynamics System

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

FRR  Flight Readiness Review

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

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

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

FOCCB  Flight Operations Configuration Control Board

FOIA  Freedom of Information Act

FOM  Facilities Operations Manager

FOP  Flight Operations Plan

FOR  Flight Operations Review

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

FPA   Focal Plane Assembly or Focal Plane Array

FPD  Flight Projects Directorate

FPE  Focal Plane Electronics

FPGA  Field-Programmable Gate Array

FPM  Focal Plane Modules

FPPS  Federal Personnel Payroll System

FQT  Formal Qualification Testing

FRB  Full-Resolution Browse

FRED  Framed Raw Expanded Data

FRP  Federal Response Plan

FRR  Flight Readiness Review

FRS  File Retrieval System

FS  Forecast Schedules

fSCA  Fractional Snow Covered Area

FSD  Flight Systems Development

FSM  Flight Systems Manager

FSSC  Financial Support Services Contract

FSV  Flight Software Vendor

FSW  Flight Software

FTA  Fault Tree Analysis

FTD  File Transfer Daemon

FTE  Full Time Equivalent or Full Time Employee

FTP  File Transfer Protocol

FTS  Flight Terminiation System

FW  Firewall or Full Width

FWHM  Full Width Half Maximum

FY  Fiscal Year



G&A  General and Administrative

GAfG  Google Apps for Government

GAM  Geography Analysis and Monitoring

GAO  General Accounting Office

GAQD  Originator Routing Code for IIRV Messages

GAR  Global Archive Refresh

GAST  Greenwich Apparent Sidereal Time

GB  Gigabyte

GBFOM  Global Band Figure of Merit

GBICS Gigabit Interface Converters

GBL  Government Bill of Lading

GCCB  Ground Segment Configuration Control Board

GCDR  Ground System Critical Design Review

GCOR  Temperature Corrected Gains

GCP  Ground Control Point

GCRS  Geocentric Celectial 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

GED  Global Emissivity Database

GEO  Geolocation Index File

GEOM  Geometric

GeoRSS  Geographic Really Simple Syndication

GeoTIFF  Geographic Tagged Image File Format

GEVS  General Environmental Verification Specification

GFE  Government Furnished Equipment

GFP  Government Furnished Property

GFS  Global File System

GFY  Government Fiscal Year

GHz  Gigahertz

GIA  Government Inspection Agency

GIAC  Global Information Assurance Certification

GIDEP  Government Industry Data Exchange Program

GigE  Gigabit Ethernet

GIO  Geographic Information Officer

GIPS  Geo-Informatics Products and Solutions

GIS  Geographical Information Systems

GISRA  Government Information Security Reform Act

GISTDA  Geo-Informatics and Space Technology Development Agency (Thailand)

GL  Geoscience Laboratory

GLAMR  Goddard Laser for Absolute Measurement of Radiance

GLC  Ground Look Calibration Request or Gilmore Creek

GloVis  Global Visualization Viewer

GLS  Global Land Survey or Global File System

GMAP  Global Monitoring Acquisition Plan

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

GNERD  GNE Requirements Document

GOES  Geostationary Operational Environmental Satellite

GOLD  Goddard Open Learning Design

GOP  Ground Operations Plan

GOS  Geospatial One-Stop

GOT  Ground Operations Team

GOTS  Government Off-The-Shelf

GP4  General Perturbations Theory

GPD  GSFC Policy Directive

GPDR Ground System Preliminary Design Review

GPL  General Public License

GPR  GNE Post-Pass Report or Goddard Procedural Requirement

GPS  Geometric Processing System or Gap Phase Statistic or Global Positioning System

GRI  Ground Reference Image

GRIB Gridded Data

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 or Ground Segment

GSA  U.S. General Services Administration or Ground Station Analyst

GSC  Ground Station Controller

GSCCB  Ground System Change Control Board

GSCDR  Ground System Critical Design Review

GSD  Ground Sampling Distance or Guide Star Data

GSDD  Ground System Design Document

GSE  Ground Support Equipment or Ground Station Engineers or Ground System Engineer

GSFC Goddard Space Flight Center

GSI Ground Station Identifier or Ground System Infrastructure or Ground Support Infrastructure

GSICS  Global Space-based Inter-Calibration 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

GSM  Ground System Manager

GSMO  Ground System Management Office or 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

GSSP Guide for Developing Security Plans for Information Technology Systems

GST  Geographic Support Team or Ground Station Technician

GSTDN  Ground Spaceflight Tracking and Data Network

GSWG  Ground System Working Group

GSVVP  Ground System Verification and Validation Plan

GSVWG  Ground System Verification Working Group

G/T  Gain over Temperature

GTOPO30  Global 30 Arc-Second Elevation Data Set

GUI  Graphical User Interface

GXA  Gimbaled X-Band Antennae



HA  High Availability

HAAT  Header, Ancillary, Annotation, and Trailer

HC  Hard Copy

HCA  Horizontal Collimator Assembly

HCR  Hardware Configuration Request or Hardware Change Request

HDDS  Hazards Data Distribution Systems

HDF  Hierarchical Data Format

HDF5  Hierarchical Data Format Version 5

HDF-EOS  Hierarchical Data Format - Earth Observing System

HDF5-EOS  Hierarchical Data Format Version 5 - Earth Observing System

HDFS  Hadoop File System

HDLC  High-Level Data Link Control

HDM  Hardware Data Manager or HSM Data Manager

HDR  Header

HDRM  High Data Rate Modem

HDS  Horizontal Display Shift

HDT  High Density Tape

HDTR  High Density Tape Recorder

HE  Hardware Engineer

Hex  Hexadecimal

HgCdTe  Mercury Cadmium Telluride

HGS  Hallway Ground Station

HK   Housekeeping

HLD  High-Level Document

HMP  Hardware Management Plan

HOM  Hotine Oblique Mercator

HOMFiH  Homogeneity Filter

HPA  High Power Antenna

HPN  Panchromatic Band Header File

HPP  Highest Point in Polygon

HQ  Headquarters

HR  Human Resources or Heritage Review

HR MSI  High-Resolution Multi-Spectral Imager

HRS  Horizontal Resampling Space

HRV  High Resolution Visible (SPOT sensor)

HSM  Hierarchical Storage Management or Hierarchical Storage Manager

HSPD  Homeland Security Presidential Directive

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

H/W  Hardware

HWCI  Hardware Configuration Item

Hz  Hertz



I   In-Phase Channel

I&T  Integration and Test

I1  Internet 1

I2  Internet 2

I2I  Image-to-Image

I2RV  Improved Inter-Range Vector Message

IA  Implementing Agreement or Impact Analysis or International Activities or Interagency Agreement

IAA  Inter-Agency Agreement

IaaS  Infrastructure as a Service

IAC  Independent Assurance Contractor or Issue Assessment Code

IAD  Ion-Assisted Deposition

IAS  Image Assessment Subsystem or 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 or International Cooperator or Internal Calibrator or 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 or Independent Characterization and Verification System

ICWP  IC Web Portal

ID  Infrastructure Design or Interface Documents or Identification

IDCC  Interval Data Collection Concept

IDCO  Image Data Collection Omission

IDCS  Image Data Collection Schedule

IDD  Interface Definitions Document

IDE  Integrated Device Electronics or Infrastructure Development or Integrated Development Environment

IDF  Interval Definition File or 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 or Interval Delivery Subsystem

IDSO  Image Data Schedule Omission

IDSR  Image Data Schedule Report

IDWR  Idaho Department of Water Resources

IE  Infrastructure Element

IEC  iStat Executive Committee or 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

IFFT  Inverse Fast Fourier Transform

IFOV  Instrument Field of View or Instantaneous Field of View

IGE  Independent Government Estimate

IGMP  Internet Group Management Protocol

IGS  Integrated Security Gateway or International Ground Station

IIR  Image Impact Report

IIRR  Instrument Integration Readiness Review

IIRV  Improved Inter-Range Vector

IIOP  Internet Inter-ORB Protocol

IKE  Internet Key Exchange

ILI  IGS to LAM Interface

IM  Instant Message or Inclination Maneuver

IMB  Issue Management Board

IMF  Inverse Minor Frames or Interval Metadata File

IMP  Information Management Plan or Integrated Master Plan

IMR  Issue Management Record

IMS  Integrated Master Schedule or Information Management System

IMT  Integrated Mission Timeline

IMU  Inertial Measurement Unit or Internal Measurement Unit

IMWD  Internet Moving Window Display

IN  Impulse Noise or Ingest

INCOSE  International Council on Systems Engineering

INFOSEC  Information Security

ING  Ingest

INM  IGS Network Manager

INPE  National Institute for Space Research

InSb  Indium Antimonite

INV  Inventory

I/O  Input/Output

IOC  Initial Operational Capability or Initial On-orbit Checkout or In-Orbit Checkout

IOC  Installation Operational Certification or Initial Operational Configuration

IOE  Instrument Operations Element  

IONET  IP Operational Network

IP  Internet Protocol  or Installation Plan

IPA  Inter-Project Agreement or Instrument Pallet Assembly

IPAC  Intergovernment Payment and Collection

IPC  Institute for Interconnecting and Packaging Electronic Circuits or Inter-Process Communication

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  or IGS Priority and Request Map or Incyte Project Manager

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 or Image Processing Subsystem

IPSec Internet Protocol Security

IPSR Instrument Pre-Ship Review

IPT Integrated Project Team or Integrated Product Team

IPV Integrated Pulse Value

IR Infrared

IRB Investment Review Board

IRD Interface Requirements Document

IRFP Implementation Request for Proposal

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 or Interconnection Security Agreement

ISCCP International Satellite Cloud Climatology Project

ISCP Infromation System Contingency Plan

iSCSI Internet Small Computer System Interface

ISD Interface Specification Document

ISF Instrument Support Facility

ISI Integral Systems Incorporated

ISL Inter-Switch Link

ISO International Standards Organization

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 or Inventory Subsystem Test Execution Summary Report

IT Information Technology or Integration Test

ITAR International Traffic in Arms Regulations

ITC Integration Test Case

ITOS Integrated Test and Operations System

ITRS International Terrestrial Reference System

ITS Information Technology Services or Integrated Time Sweep

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

IW&DS Information Warehouse and Data Store

IWAD Individual Work Authorization Document

IWG Interface Working Group

IWT Image Window Table



J2EE  Java 2 Platform, Enterprise Edition

JAR Java Archive

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

JMS Java Messaging Service

JMSRA Java Message Service Resource Adapter

JPEG Joint Photographic Experts Group

JPF Job Parameter File

JPL Jet Propulsion Laboratory

JSA Johannesburg, South Africa Ground Station

JSP Java Server Pages

JSpOC Joint Space Operations Center

JSR Java Portlet Specification

JTS Java Topology Suite

JVM Java Virtual Machine



Degrees Kelvin

KA8 Known Anomaly Eight

KB Kilobyte

KDP Key Decision Point

kg Kilogram

KHB Kennedy Space Center Handbook

KHC Kashi, China Ground Station


KIS Kiruna, Sweden Ground Station

km Kilometer

KMI Key Management Infrastructure

KMLKeyhole Markup Language

KMPKey Management Plan

KPI Key Performance Indicator

KPM Key Performance Measures

KPR Key Performance Requirement

KSAT Kongsberg Satellite Services

KSC Kennedy Space Center

KUJ Kumomoto, Japan Ground Station

KVM Keyboard Video Mouse



L+30 Launch + 30 Days

L+60 Launch + 60 Days

L+90 Launch + 90  Days

L+EO Launch + Early Orbit

L0 Level 0

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

L1AOS Level 1 Automatic Ordering System

L1G Level 1 Systematic (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) or Level 1 Precision and Terrain

L1TP Level 1 Terrain Precision (Corrected)

L2 Level 2

L3+ Level 3+

L4 Level 4 or Landsat 4

L5 Landsat 5

L7 Landsat 7

L8 Landsat 8

L9  Landsat 9

LACCA Land Automated Cloud Cover Assessment

LACS Landsat Archive Conversion System

LADS LDCM Archive and Dissemination Segment

LAM008 Interface Between COI PS and L0Rp PS

LAM Landsat Archive Manager

LAM AS LAM Archive Server

LAN Local Area Network

LANDSAT Land Satellite

LAS Land Analysis System

LASP Laboratory for Atmospheric and Space Physics

LaSRC  Land Surface Reflectance Code

LAT Latitude

LBG Libreville, Gabon Ground Station

LC LDCM Contractor

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

LCMAP Land Change Monitoring Assessment and Projection

LCR  Logical Change Record or LTAP Collection Request

LCSS LDCM Contractor Space Segment

LDAP Lightweight Directory Access Protocol

LDB  IAS Local Database

LDCC Landsat Data Continuity Contract

LDCM Landsat Data Continuity Mission

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

LEDAPS Landsat Ecosystem Disturbance Adaptive Processing System

LEI LAM to ECS Interface

LEM Lower Equipment Module

L&EO  Launch and Early Orbit

LEO Low Earth Orbiting or Launch and Early Orbit

LEO&A  Launch, Early Orbit and Activation

LEO-T Low Earth Orbiter-Terminal

LES Log file Extraction Services

Level A Level Zero Aggregated

LF Line-Feed

LG L0Ra Generator

LGAC Landsat Global Archive Consolidation

LGGS Landsat Global Geodetic Standard

LGN Landsat Ground Network

LGPL Lesser General Public License

LGS Landsat Ground Station

LGSOWG Landsat Ground Station Operations Working Group

LHC Left-Hand Circular

LHCP  Left-Hand Circularly Polarized

LHS  Left-Hand Side or Left-Hand SLO

LIB Library

LICS Landsat International Communication System

LID Landsat and LDCM Inventory Database or LSDS Inventory Database

LIFO Last In, First Out

LIL Landsat Inventory Loader

LIM Landsat Inventory Management or LDCM Interface for Metadata

LIMA Landsat Image Mosaic of Antarctica

LIMB LAM Interface for Metadata and Browse

LIR LDCM in Retrospect

LIS  Landsat Integration System or LACS Inventory System

LISS-III Linear Imaging Self-Scanning Sensor III

LITAP  Landsat Intersegment Technical Assessment Panel

LL  Lower Left

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

LMMS Lockheed Martin Missiles and Space

LMO Landsat Mission Operations

LMOC Landsat Multi-Satellite Operations Center

LMOCRD Landsat Multi-Satellite Operations Center Requirements Document

LMOP Landsat Mission Operations Project

LMST  Local Mean Solar Time

LMWS  Landsat Mission Web Site

LNA  Low Noise Amplifiers

LNET Lustre Networking

LO Local Oscillator

LOA  Letter of Agreement

LOC Letter of Cooperation

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

LPDS Level 1 Product Distribution System or LDCM Data Product Specification

LPGS   Landsat Product Generation System

LPGSUI Landsat Product Generation Subsystem User Interface

LPO Landsat Program Office or LSDS Program Office

LPS Landsat 7 Processing System

LPSNG Landsat Processing System Next Generation

LPSO Landsat Project Science Office

LPT Limited Performance Test

LR Lower Right

LRD Launch Readiness Date

LRMB LDCM Risk Management Board

LRR Launch Readiness Review

LRS Landsat Remote Sensing

LRSP Land Remote Sensing Program

LS Launch Segment

LSAA Landsat and Sentinel Archive and Access

LSATH High Saturation Radiance

LSATL Low Saturation Radiance

LSB Least Significant Bit or 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 or Landsat Scalable Integrated Multi-Mission Support System

LSIS Landsat Science Information System

LSO LDCM Science Office

LSPLaunch Support Program or 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 or Land Surface Temperature

LTA Long Term Archive

LTAP 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

LTVA Limited Technical Vulnerability Assessment

LTWG Landsat Technical Working Group

Ltypical Typical Radiance

LUN Logical Unit Number

LUT Look-Up Table

LV Launce Vehicle

LVDT Linear Variable Differential Transformer

LVRR Launch Vehicle Readiness Review

LWIR Long Wavelength Infrared

LXR Landsat Transfer Radiometer




M2M Machine-to-Machine

M&PCB Materials and Processes Control Board

M&PCP Materials and Processes Control Program

MA Mission Archive or Multiple Access or Major Application or Mission Assurance

MAC  Media Access Control or Monitor and Control Subsystem

MACS MSS-X Archive Conversion System or Monitor and Control Subsystem

MAD Median Absolute Deviation

MAE Materials Assurance Engineer

MAID Massive Array of Idle Disks or Master Action Item Database

MAM Mission Assurance Manager

MAP Mission Assurance Plan

MAR Mission Assurance Requirements

MAS MODIS Archive System

MB Megabyte

MBO  Management by Objects

Mbps Megabit per Second

MC MAC Controller

MCDL Master Configured Document List or Master Controlled Document List

MCDR Mission Critical Design Review

M-CDR MOC Critical Design Review

MCE Mirror Control Electronics

MCM Multi-Chip Module

MCR Mission Concept Review

MCS Monitor and Control Subsystem

MD Metrics Database or Mission Data or Mission Data

MD5  Message-Digital Algorithm 5

MDA MacDonald, Dettwiler, and Associates

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 or Mission Definition Review

MDS MMO Database System or Metadata Server

MDT Metadata Target

ME Memory Effect

MEB  McMurdo, Antarctica

MEC Metrics ETL Component

MEF Mission Essential Function

MEOS Multi-mission Earth Observation System

MER Mission Equipment Room

mf minor frame

MF Minor Frame

MFC Microsoft Foundation Classes or MAC Fetch CPF

MFPS Major Frame Processing Subsystem

MFR Multi-Functional Receiver

MG Metadata Generator

MGS  MODIS Ground Station or Management Server

MGT Management Target

MHz Megahertz

MI Mutual Information

MIL Materials Identification List or MAC Inventory L0Ra

MIS Master Integrated Schedule or Management Information System

MISR Multiangle Imaging SpectroRadiometer

MIT Massachusetts Institute of Technology

MJF Major Frame

MJP MAC Job Processor

MLC Most Likely Case


MLH Maximum Likelihood Estimate

MLI MACS to LAM Interface

MLT Mean Local Time

mm Millimeter

MM Multi-Mission or Mission Manager

mm/hr Millimeters per Hour

MM&A Mission Monitor & Analysis

MMA Mission Management Analyst

MMIO Modified Morarec 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 or Multimission Modular Spacecraft

MO&DSD Mission Operations and Data System Directorate

MOA Memorandum of Agreement

MOC Mission Operations Center

MOCRD Mission Operations Requirement Document

MODIS Moderate Resolution Imaging Spectrometer

MODNET MO&DSD Operational/Development Network

MODTRAN Moderate Resolution Transmittance atmospheric modeling software

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 or Mission Operations Review

MORM Mission Operations Readiness Manager

MOS Mission Operations Simulation

MOTS Mission Off-The-Shelf

MOU Memorandum of Understanding

MOVE Mission Operations Voice Enhancement

MOWG Mission Operations Working Group

MP Multi-Processor

M-PDF  MOC Preliminary Design Review

MPEG  Moving Picture Experts Group

MPLS Multi Protocol Label Switching

MPR Monthly Progress Review

MPS  MODIS Processing System or Mission Plan System

MPSR Management Program Status Review or Monthly Project Status Report

MR Management Reserve

MRB Milestone Review Board or Material Review Board

MRC Metrics Reporting Component or Metadata Record

MRG Metrics Report GUI

MRLC Multi-Resolution Land Characteristics

MRR Mission Requirements Review

MRT Mission Readiness Testing

MRTG  MultiRouter Traffic Grapher

ms millisecond

MS Multispectral

MSA Master Schedule of Activities

msb Most Significant Bit

MSB Most Significant Byte

MSCD Mirror Scan Correction Data

MSE Mission Systems Engineering

MSFC Marshall Space Flight Center

MSI Multi-Spectral Instrument

M-SIR MOC System Integration Review

MSK Receive Antenna Horizon Mask Message

MSM MultiService Mobility or Mission Simulations Manager or Management Switch Module

MSM Mission Operations Center Systems Manager

MSO Mission Support Office

MSPSP  Missile System Prelaunch Safety Data Package

MSR Monthly Status Review

M-SRR MOC System Requirements Review

MSSMultispectral Scanner or Mass Storage System

MSS-A Multispectral Scanner - Archive Format

MSS-P Multispectral Scanner - Processed Format

MSS-X Multispectral Scanner data, reformatted CCT-X data

MST Mission Support Team

MTA Metadata

MTBF Mean Time Before Failure

MTDSS MS and TM Data Subsetting System

MTF Modulation Transfer Function

MTFC Modulation Transfer Function Compensation

MTI  Matera, Italy

MTL Level 1 Metadata

MTP Distribution Product Metadata

MTR Mission Transition Review

MTS MDS Transformation Services

MTTR Mean Time to Restore or Mean Time to Repair or Mean Time to Recovery

MTU Maximum Transmission Unit

MUA Materials Usage Agreement

mW milliWatt

MWD Moving Window Display



N0 Noise Density

N/A Not Applicable

NAD83 North American Datum of 1983

NAK Negative Acknowledgement

NARA National Archive and Records Administration

NAS NASA Assurance Standard or Network Attached Storage

NASA National Aeronautics and Space Administration

Nascom NASA Communications

NASDA National Space Development Agency (Japan)

NAVOCEANO  Naval Oceanographic Office

NBII  National Biological Information Infrastructure

NB Narrow Band

NBR Normalized Burn Ratio or Navigation Base Reference

NCAS National Carbon Accounting System

NCC Network Control Center

NCEP National Centers for Environmental Prediction

NCSA National Center for Supercomputing Applications

NCT Network Connectivity Test

NDA Non-Disclosure Agreement

NDE Non-Destructive Examination

NDF NLAPS Data Format

NDI Non-Development Items

NDIA National Defense Industrial Association

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

NE?T Noise Equivalent Delta Temperature

NED Natural Elevation Data

NEDL Noise Equivalent Detector Radiance

NEDT Noise Equivalent Detector Temperature

NEMA National Electrical Manufactures Association

NEN Near Earth Network

NENUG Near Earth Network User’s Guide

NEOS National Earth Orientation Service

NEOG National Earth Observation Group

NEPAG NASA EEE Parts Assurance Group

NEΔT Noise-Equivalent Change in Temperature or Noise Equivalent Delta Temperature

NESDIS National Environmental Satellite Data and Information Service

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

NGIS Northup Grumman Innovation Systems

NGST Northrop Grumman Space Technology

NHB NASA Handbook

NIC Network Interface Card

NIFC National Interagency Fire Center

NIPD Network Interface Planning Document

NIR Near-infrared

NISN NASA Integrated Services Network

NIST National Institute for Standards and Technology

NITF National Imagery Transformation Format

NLAPS  National Land Archive Production System

NLCD National Land Cover Dataset

NLI National Land Imaging

NLIP National Land Imaging Program

nm Nanometer

NMAS National Map Accuracy Standards

NMD National Mapping Discipline

NMS  Network Management Software

NN Nearest Neighbor

NOA New Oblicating Authority

NOAA National Oceanic and Atmospheric Administration

NOC NUGS Operations Concept

NOLAN Nascom Operational Local Area Network

NOM Network Operations Manager

NOR NORAD Two Line Element Message

NORAD North American Air Defense

NOVAS Naval Definition Vector Astronomy Software

NP Narrative Procedure

NPD NASA Policy Directive

NPOESS National Polar-orbiting Operational Environmental Satellite System

NPR NASA Procedural Requirements

NPS National Park Service

NPSL NASA Parts Selection List

NPV Net Present Value or Net Pulse Value

NRCA Nonconformance Reporting and Corrective Action

NRT Network Readiness Test

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 or National Spatial Data Infrastructure

NSF National Science Foundation

NSG Neustreilitz, Germany Ground Station

NSLRSDA National Satellite Land Remote Sensing Data Archive

NSM Network and Security Manager

NSN/NSG Neustrelitz Ground Station (Germany)

NSPAR Nonstandard Parts Approval Request

NSS NASA Safety Standard

NSSDC National Space Science Data Center

NSTC National Science and Technology Council

NTE Not To Exceed

NTIA National Telecommunications and Information Administration

NTP Network Time Protocol

NUC Non-Uniformity Correction

NUG NASA-USGS Joint Ground System

NUP North Up

NWIS National Water Information System

NWPNumerical Weather Prediction

NWS National Weather Service



O&M Operations & Maintenance

O&S Operations & Sustaining

OA Operational Archive or Operations Agreement or Operations Analyst

OAG Office of Acquisitions and Grants

OAR On-Orbit Acceptance Review or Operational Acceptance Review

OAV Operational Verification Assessment

OBC Onboard Computer or On Board Calibrator

OBE Overcome By Events

OBP On-Board Processor

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

OCI Organization Conflict of Interest

OCAO Office of the Chief Administrative Officer

OCIOOffice of the Chief Information Officer

ODBCOpen Database Connectivity

ODCOther Direct Costs

ODL Object Description Language

ODNI Office of the Director of National Intelligence

ODOS Order Distribution and Order Status

ODS Order Distribution Service

OE  Operations Engineer

OEM Original Equipment Manufacturer or Oracle Enterprise Manager

OFE Order Fulfillment Element

OGC Open Geospatial Consortium

OHS  Order Handler Subsystem

OIRD Observatory Interface Requirements Document

OITL Orbit-In-The-Life

OIV On-orbit Initialization and Verification

OLA P On-Line Analytical Processing

OLI Operational Land Imager

OLI-2 Operational Land Imager-2

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

OMP Operations Management Plan

OMS Optimum Management System

OO Orbit Oriented

OOB Out-of-Band

OPA Organizational Process Asset

OPM Office of Personnel Management

OPM3 Organizational Management Maturity Model

OPR Office of Primary Responsibility


Ops Con Operations Concept

Ops GUI Operations Graphical User Interface

OR Operations Readiness

ORB Object Request Broker

ORR Operations Readiness Review

ORT Operational Readiness Test

OQPSK Offset Quadrature Phase Shift Keying

OS Operating System

OSC Orbital Science Corporation

OSHA Occupational Safety and Health Administration

OSI Open Systems Interconnection

OSS Object Storage Server or Operations Support Simulations

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

OTS OLI-TIRS Subsetter or Over Target Schedule or Off-The-Shelf

OUI Operator User Interface

OV Operational Verification

OVA Operations Validation and Acceptance

OVAD Operational Verification Acceptance Document

OVAP Operational Verification Acceptance Period

OWB Oracle Warehouse Browser or Oracle Warehouse Builder

OWSGUI Oracle Web Service GUI



P3I Preplanned Product Improvement

P&C Project Management and Controls

P&S Planning and Scheduling

PaaS Platform as a Service

PAC Partial Aperture Calibrator or Prince Albert, Canada Ground Station

PAIV Project Acceptance and Implementation Variance

PAM Pluggable Authentication Module

PAN Production Acceptance Notification or 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 or Polyconic or Production Control or Program Charter or Property Clerk

PCA Physical Configuration Audit or Physical Channel Access or Point of Closest Approach

Pcache Processing Cache

PCB Parts Control Board or Project Control Board

PCD Payload Correction Data

PCDS Payload Correction Data Subsystem

PCI Peripheral Component Interface

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

PCS Process Control Subsystem or Product Control Subsystem or Production Control Subsystem

PCSS Program Coordinate Systems Standards

PCU Power Control Unit

P/D Programmable Demodulator

PD Product Distribution or Position Description or Program Directive

PDA Personal Digital Assistant

PDB Program Decision Board or Project Database

PDD Presidential Decision Directive

PDF Portable Document Format or 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 or Preliminary Design Review

PDRD Product Delivery Record Discrepancy

PDRM Product Delivery Receipt Mechanism

PDS Product Distribution System

PDU Protocol Data Unit or Power Distribution Unit

PED Personal Electronic Device or Portable Electronic Device

PER Performance Evaluation Review or Pre-Environmental Review

PERT Program Evaluation and Review Technique

PF Polarization Factor

PF1 Poker Flats 1

PFPA Prime Focal Plan Assembly

PFR Problem / Failure Report

PG Product Generation

PgC Program Charter

PgIMS Program Integrated Master Schedule

PgMP Program Management Plan

PGN Polar Ground Network

PGS Product Generation System (Generic Name for NLAPS) or Product Generation Subsystem

PgWBS Program Work Breakdown Structure

PHA Preliminary Hazard Analysis

PI Primary Investigator

PIA Project Implementation Agreement or Privacy Impact Assessment

PIB Payload Interface Board

PICSPseudo-Invariant Calibration Site or 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

PIV Personal Identity Verification

PKI  Public Key Infrastructure

PKO Project Kick-Off

PL  Public Law

PLA Payload Adapter

PLAR Post Launch Assessment Review or Program Level Requirements Agreement or Program Level Requirements Appendix

PL-DRO Phase Locked Dielectric Resonance Oscillator

PL/SQL Procedural Language / Structured Query Language

PM Phase Modulation or Program Management or Project Management

PMB Performance Measurement Baseline

PMBOK Project Management Book Of Knowledge

PMC Performance Monitoring Counter or Program Management Council

PMEF Primary Mission Essential Function

PMI Project Management Institute

PMMM Program Management Maturity Model

PMO Persistent Mission Object

PMP Project Management Professional or Project Management Plan or 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 or Purchase Order

POA&M Plan of Action and Milestones

POC Point of Contact

POJO Plain Old Java Object

POL Policy

POP Point-Of-Presence or Point of Performance or Period of Performance

POS Position and Orientation System

POSC Petrotechnical Open Software Corporation

POSIX Portable Operating System Interface for Unix

PP Planning Package

PPF Payload Processing Facility

PPL Preferred Parts List

PPM Program Project Management

ppm Parts Per Million

PPOC Procurement Point of Contact

PPQA Process and Product Quality Assurance

PPR Post-Pass Report

PPS Pulse Per Second

PR Program Review or Problem Report or Product Request or Purchase Request

PRA Paperwork Reduction Act or Probabilistic Risk Assessment

PRB Problem Report Message

PRD Project Reference Database

PRI Priority Mask Message

PRISM Professional Resources in Information Systems Management

PRL Pull Remote Logs

PS Polar Stereographic or Production Server

PSAPre Security Assessment

PSD Power Spectral Density

PSF Point Spread Function

PSGUI Production Server Graphical User Interface


PSK Phase Shift Keyed

PSLA Project Service Level Agreement

PSM Project Safety Manager

PSMON Power Status Monitor

PSR Priority/Service Request Mask File or Pre-Ship Review or Pre-Shipment Review or Program Status Review

PSU Power Supply Unit

PTM Principal Task Manager

PTP Primary Transfer Program or 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 Web Site



Quadrature Channel

Q1 Quarter 1

Q1G L1G Quality Assurance

Q1R L1R Quality Assurance

Q2 Quarter 2

Q3 Quarter 3

Q4 Quarter 4

QA Quality Assurance or Quality Assessment

QAA Quality Assurance Audit

QAS Quality Assessment Subsystem

QB Quality Board or 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

QUI Quality Assurance User Interface

QWIP Quantum Well Infrared Photometers

QWR Quarterly Web Review



R&D Research and Development

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

R21 Resource 21

R3 Release 3

RA Right Ascension or Risk Assessment

RAC Real Application Cluster or Risk Assessment Code

RAD Radiometric or Rapid Application Development

RadSim Radiometry Simulator

RAID Redundant Array of Independent Disks

RAM Random Access Memory or Responsibility Assignment Matrix or Resource Allocation Matrix

RAMP Radarsat Antarctica Mapping Project

RAS Reliability, Availability, Serviceability

RBD Risk Based Decision

RBS Reflective Band Sensor or Risk Breakdown Structure

RBST Role Based Security Training

RBV Return Beam Vidicon

R-C Resistor-Capacitor

RCA Radio Corporation of America

RCA-EO Requirements, Capabilities, and Analysis for Earth Observations

RCC Raw Computer Compatible

RCM Resource Configuration Manager

RCN Revision Control Number

RCR Remote Controlled Repository

RCS Reaction Control System

RD Requirements Document

RDAC Redundant Disk Array Controller

RDB Requirements Database Baseline

RDBMS Related Database Management System

RDC Remote Desktop Connection

RDCS Raw Data Capture Subsystem

RDPS Raw Data Processing Subsystem

RDS Raw Data Subsetter

RDSS RCC Data Subsetter or Raw Data Subsetting Subsystem

RE Requirements Engineer and Responsible Engineer

REC Recovery Time

REF Reference

REL Relative

REST Representational State Transfer

REQ Service Request Message or Requirement

RF Radio Frequency

RFA Request for Action

RFC Request for Comments

RFI Request for Information

RFID Root File Identification

RFO Request for Offer

RFP Request for Proposal

RFQ Request for Quote

RFR Run for Record

RFS Radio Frequency System

RG Relative Gain

RGB Red Green and Blue Color Value

RH Red-High

RHC Right-Hand Circular

RHCP Right Hand Circularly Polarized

RHS Right-Hand Side or Right-Hand SLO

RIDS Review Item Discrepancies

RIM Risk Information Management Tool

RIORisks, Issues, and Opportunities

RIPL Risk Identification Prompt List

RIS24 24-bit Raster Image

RITSO Regional IT Security Officer

RL Red-Low

RLN Resource Load Network

RLUT Response Linearization Look Up Table

RM Requirements Management or Risk Manager or Resource Manager

RMAN Recovery Manager

RMB Risk Management Board

RMD Risk Management Database

RMF Risk Management Framework

RMM Risk Mitigation Maneuvers

RMP Requirements Management Plan or 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

ROI Return on Investment or Region of Interest

ROIC Read-Out Integrated Circuit

ROLO Robotics Lunar Observatory

ROM Rough Order of Magnitude

RPC Remote Procedure Call or Rational Polynomial Coefficient

RPE Rational Publishing Engine

RPI Rumpin, Indonesia Ground Station

RPM Revolutions per Minute

RPS Radiometric Processing Subsystem

RR Readiness Review

RRAS Routing and Remote Access Services

RRB Reduced Resolution Browse

R-S Reed-Solomon

RSA Rivest-Shamin-Adleman

RSB Remote Sensing Branch

RSD Remote Sensing Division

RSDO Rapid Spacecraft Development Office

RSDP Rapid Spacecraft Development Office

RSPP Robotic System Protection Plan

RSR Relative Spectral Responses

RSS Reuse Subsystem or Really Simple Syndication or Rich Site Summary

R/T Receive/Transmit

RT Real Time

RTA  Roof Top Antenna

RTC Remote Telemetry and Command Unit

RTCS Relative Time Command Sequence

RTF Rich Text Format

RtoO Research-to-Development-to-Operations

RTS Relative Time Sequence

RTT Round Trip Time

RTTM Requirements-To-Test Matrix

RVM Requirements Verification Matrix

RWA Reaction Wheel Assembly

RX Receive



S&O Search and Order

SA Spacecraft Analyst or Single Access or Systems Administrator

SA Storage and Archive Subsystem or System Architect

SAA Solar Azimuth Angle or South Atlantic Anomaly

SA-AC Storage Archive - Archive Cache

SaaS Software as a Service

SAC Satellite Application Centre (South Africa)

SADD System Algorithm Description Document

SAG System Administrator Guide

SAGUI Storage and Archive Graphical User Interface

SA-IC Storage and Archive – Internal Cache

SAIC Science Applications International Corporation

SAM Scan Angle Monitor or Storage Archive Manager

SAMP Software Acquisition Management Plan

SAN Storage Area Network

SANS System Administration, Networking, and Security Institute

SAP Systems Applications and Products or Software Assurance Plan

SA-PC Storage Archive - Processing Cache

SAPMSO Space Asset Protection Mission Support Office

SARR Security Assessment Response Report

SAS Serial Attached SCSI or Solar Array Simulator

SAT Site Acceptance Testing

SATA Serial Advanced Technology Attachment

SATO Science Algorithms to Operations

SAW Systems Analysis Workgroup

SBAF  Spectral Band Adjustment Factor

SBC Single Board Computer

SBCG System Build and Configuration Guide

SBG Software Build Guide

SBM Solutions Business Manager

SBRS Santa Barbara Remote Sensing

SBS Subsetter System

SBU Sensitive But Unclassified

S/C Spacecraft

SC Spacecraft or Science Campaign

SCA Sensor Chip Assembly or Snow Covered Area

SCAMA Switching, Conferencing, and Monitoring Arrangement

SCAMA Station Conferencing and Monitoring Assembly

SCC Stress Corrosion Cracking or System Control Center

SCD Small Conversion Device

SCDR Spacecraft Critical Design Review

SCES Station Contract Execution Summary

SCH Contact Schedule Message

SCI Software Configuration Item

SCID Spacecraft Identifier

SCL Signal Conditioning Unit - Lower Equipment Module

SCM Software Configuration Management

SCN Scan

SCP Standard Controls Processor or Secure Copy Protocol

SCR System Concept Review or Software Configuration Request

SCR Standard Collection Request

SCS Scan-Correlated Shift or Satellite Checkout Station

SCS NOAA/IPO Space and Communications Segment

SCSI Small Computer Software Interface

SCTR Special Calibration Test Requirements

SD South Dakota or Scan Direction

SDAT Special Data Acquisition Tool

SDD Software Design Document

SDDS Seamless Data Distribution System

SDF Software Development File

SDLC System Development Life Cycle


SDM Silo Data Manager

SDMP Software Development Management Plan

SDN South Dakota Network

SDP Software Development Plan or Science Data Production or Science Data Processing

SDPS Science Data Processing Segment

SDR System Design Review

SDS Scientific Data Set

SDU Service Data Unit

SDVF Software Development and Validation Facility

SDW Seamless Data Warehouse

SE Systems Engineer or Systems Engineering

SEA Sensor Azimuth Angle

SEB Source Evaluation Board

SED Software Engineering Department

SEE  Science Execution Environment

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

SEO Systems Engineering Office

SEMP Systems Engineering Management Plan

SET Systems Engineering Team

SEU Single Event Upset - Anomaly Event

SEV Severity or Sun-Earth-Vehicle angle

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

SFTP SSH File Transfer Protocol

SGDAWG Space to Ground Data Acquisition Working Group

SGI Silicon Graphics Incorporated or Shadnagar, India Ground Station

SGICD Space to Ground Interface Control Document

SGP4 Simplified General Perturbations

SGS Svalbard Ground Station or Svalsat Ground Station

Sg/SG6 Svaldbard Ground Station

SGT Stinger Ghaffarian Technologies

SHA Secure Hash Algorithm

Shapelib Shapefile Library

SHC Shutter Histogram Characterization

SHS Second Half Scan

SHSERR Second Half Scan Error

SI Searchable Inventory or Space Imaging or Science Instrument or Système International

SIAT Spectral Image Annotation Tape

SIC Spacecraft Identifier Code

SID Searchable Inventory Database or System ID

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 or Survey Investigation and Research

SIRCUS Spectral Irradiance and Radiance responsively Calibration using Uniform

SIRU Scalable Inertial Reference Unit

SIS Science Information System or Spacecraft Interface Simulator

SISO Subsystem Information System Owner

SISSE Senior Information System Security Engineer

SITL Single Interval-In-The-Life

SITP Software Integration Test Plan

SKMP System Key Management Plan

SL Scan Line

SLA Service Level Agreement or 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 or 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

SM Schedule Manager or Scan Mirror

SMA  Safety and Mission Assurance or S-Band Multiple Access

SMAP Safety and Mission Assurance Plan

SMAT System, Model, and Analysis Tool

SMC Subsetter Monitor and Controllers

SMDScience Mission Directorate

SMEScan Mirror Electronics or Subject Matter Expert

SMP Software Maintenance Plan or Software Management Plan

SMR Staff Management Request

SMRD Science and Mission Requirements Document

SM RVM Science and Mission Requirements Verification Matrix

SMS System Management Server

SMSR Safety and Mission Success Review

SN Space Network

SNAS Space Network Access System

SNMP Simple Network Management Protocol

SNR Signal-to-Noise Ratio

SNUG Space Network User’s Guide

SO Search and Order

SOA Service-Oriented Architecture or Satellite Operator Agency

SOAP Simple Object Access Protocol

SOC Satellite Operations Center

SOD Seconds Of Day

SOH State of Health

SOM Space Oblique Mercator

SON Statement of Need

SOO Statement of Objectives

SOP Standard Operating Procedure

SORN  System of Record Notice

SOS Spacecraft/Observatory Simulator

SOW Statement of Work

SP Special Publication

SPAOS Standard Product Automatic Ordering System

SPARC Scalable Processor Architecture

SPDR Spacecraft Preliminary Design Review

SPI Schedule Performance Index


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

SPOT Satellite Pour l'Observation de la Terre (Satellite for Earth Observation)

SPR Software Problem Report

SPSR System Pre-Ship Review

SPVM System Performance Verification Matrix

SPVP System Performance Verification Plan

SQA Software Quality Assurance

SQAP Software Quality Assurance Plan

SQL Structured Query Language

SQMS Softwae Quality Management System

SQPSK Staggered Quadrature Phase Shift Keying

SQRT Square Root

SR System Review or Surface Reflectance

sr steradian

SRAEROSOLQA internal Surface Reflectance Aerosol Quality Assessment

SRB Schedule Review Board or Standing Review  Board

SRCLOUDQA Surface Reflectance Quality Assessment Band

SRD System Requirements Document

SRI Standard Robot Interface

SRLUT Spectral Radiance Look Up Table

SRM Silo Resource Manager

SRO Systems Review Office

SRP Systems Review Plan

SRR System Readiness Review or System Requirements Review or Software Requirements Review

SRS Software Requirements Specification or System Requirements Specification

SRT Systems Review Team or Siracha, Thailand Ground Station

SRTM Software Requirements Traceability Matrix or Shuttle Radar Topography Mission


SS Space Segment or System Support or Signal Strength

SSA S-Band Single Access or Space Situational Awareness

SSCL Standard System Control List

SSD Subsystem Design Document

SSERB Systems Support Engineering Review Board

SSG System Support Group

SSH Secure Shell

SSHGS Secure Shell Gateway Service

SSI Sensitive Security Information

SSIP System Safety Implementation Plan

SSL Secure Socket Layer

SSM Scene Select Mechanism or Scene Select Mirror

SSO Single Sign-On

SSoH Stored State of Health

SSOP Security Standard Operating Procedure

SSP System Security Plan or Satellite Support Plan

SSPA Solid State Power Amplifier

SSP-MSO  Space System Protection - Mission Support Office

SSPP Systems Safety Program Plan

SSR Solid State Recorder or Software Specification Review

SSRR Spacecraft System Requirements Review

ST System Test

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

STP System Test Plan

STR System Test Report or Special Task Report

STS Scene Transmit Schedule

STSS Synchronize to Secondary Server

STV Spacecraft Transportation Vechicle

SUI Subsetter Operator User Interface

SUM Summary

SUN Sun Microsystems, Inc.

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

S/W Software

SW Switch or Software

SWD Software Development

SWI Software Engineer

SWIR Short Wavelength Infrared

SWOT Strength, Weakness, Opportunity, and Threat

SZA Solar Zenith Angle




T1 Tower 1

T2 Tower 2

T382 Triangular 382

T&A Trending and Analysis or Trending & Archive

T&C Telemetry and Command

TAI International Atomic Time

TAMR Telemetry Archive Metrics Report

TAP Technical Assessment Panel

TAR Tape Archiver

TAT Turn-Around-Time

TB Terabyte

TBC To Be Confirmed

TBD To Be Determined

TBR To Be Resolved or To Be Reviewed or To Be Refined

TBS To Be Submitted or To Be Supplied or To Be Specified or To Be Scheduled

TC0AOS TIRS Collection 0 Automatic Ordering System

TC1AOS TIRS Collection 1 Automatic Ordering System

TC Test Case

TCDC Total Cloud Cover

TDEA Triple Data Encryption Algorithm

TCPTransmission Control Protocol or Technology Control Plan

TCPI To Complete Performance Index

TCP/IP Transmission Control Protocol/Internet Protocol

TCS Thermal Control Subsystem

TCXO Temperature-Compensated Crystal Oscillator

TDF Tracking Data Formatter or Time-Dependent Factor

TDI Time Delay Integration

TDR Test Discrepancy Report

TDRS Tracking and Data Relay Satellite

TDRSS Tracking and Data Relay Satellite System

TDT Terrestrial Dynamical Time

TDY Temporary Duty

TE Test Engineer

TEM Technical Exchange Meeting

TERSSTasmanian Earth Resources Satellite Station Consortium

TESR Test Execution Summary  Report

TFA Two-Factor Authentication

TFF TIRS Free Flyer

tHC The Hammers Company

TIC  Trusted Internet Connection

TID  Total Ionizing Dose

TIFF Tagged Image File Format

TIM Technical Interchange Meeting or Technical Issue Memorandum

TIR Thermal Infrared

TIRS Thermal Infrared Sensor or Thermal Infrared Scanner

TIRS-2 Thermal Infrared Sensor -2

TIRS Thermal Infrared Sensor

TLE Two-Line Element

TLM Telemetry

TLS Transport Layer Security

TM Thematic Mapper or Traverse Mercator or Task Manager

TM-A Thematic Mapper - Archive Format

TMACS Thematic Mapper and Multispectral Scanner Archive Conversion System

TMIAS Thematic Mapper Image Assessment System

TML Total Mass Loss

TM-R Thematic Mapper - Raw Format

TMR Thermal Mapper Raw

TMS Training Management System

TMSR TSSC Monthly Status Report

TMSS TM Subsetter

TNOS Tromoso Network Operations Centre

TNS Transport Network Substrate

TO Task Order or Terrain Occlusion

TOATop of Atmosphere

TOR Terms of Reference

TP Task Plan

TPL Telemetry Packetization Layer

TPM Technical Performance Measures

TPS Test Procedure Specification

TQCM Thermoelectric Quartz Crystal Microbalanc

TRAM Tracking, Routing, and Metrics

TRAMAOS TRAM 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

TSI  Honeywell Technology Solutions Inc.

TSR Technical Service Request

TSSC Technical Support Services Contract

TST Technical Support Team

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


TUTR Tunable Universal Track Receiver

T/V Thermal/Vacuum

TVAC Thermal Vacuum

TWITL Total WRS-2 In The Life

TWM Task and Work Management

TWTA Traveling-Wave Tube Amplifier



UAC User Account Control

UAF University of Alaska, Fairbanks

UAR Update as Required

UB Undistributed Budget

U/C Up Converter

UDP Upper Data Point or 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

UIS USGS Inventory Server

U/L Uplink

UL Upper Left

UM Unified Messaging

UML Unified Modeling Language

UNEP United Nations Environment Programme

UNIX Bell Laboratories trademark for operating system language and time sharing

unixODBC Unix Open Database Connectivity

U/P Uplink Processor

UP User Portal System

UPE User Portal Element

UPS Uninterruptible Power Supply or Universal Polar Stereographic

UQPSK  Unbalanced Quadrature Phase-Shift Keying

UR Upper Right or User Request

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

USG U.S. Government

USGS U.S. Geological Survey

USML United States Munitions List

USNO U.S. Naval Observatory

USPS U.S. Postal Service

USSTRATCOM U.S. Strategic Command

UT Universal Time or Unit Test

UT1 UTC Corrected

UTC Universal Time Code or Coordinated Universal Time

UTM Universal Transverse Mercator



V&V Verification and Validation

VA Veteran Administration

VAC Variance at Completion

VAFB Vandenburg Air Force Base

VAL Validation

VAP Value Added Processor

VAR Value-Added Resellers or Variance Analysis Report

VC Virtual Channel

VC63 Virtual Channel 63

VCA Virtual Channel Access

VCDU Virtual Channel Data Unit

VCID Virtual Channel Identifier or Virtual Channel Identification

VCLC Virtual Channel Link Control

VDD Version Description Document

VDP Validation Data Products

VER Version

VF Valley Forge

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

VMS Virtual Memory Storage

VNIR Visible and Near Infrared

VO Verification Owner

VOI Value of Information

VOIP Voice Over Internet Protocol

VPN Virtual Private Network

VQA Visual Quality Assurance

VRM Verification Requirements Matrix

VRP Video Reference Pixel

VRS Vertical Resampling Space

VSWIR Visible to Short Wavelength Infrared

VTL Verification Tracking Log

VTP Verification Test Procedures

VVP Verification and Validation Plan



W3C World Wide Web Consortium

WA Work Authorization

WAD Work Authorization Document

WAN Wide Area Network

WB Wideband

WBDR Wideband Downlink Report

WBM Wide-Band Module

WBS Work Breakdown Structure

WBV Wide Band Video

WBVT Wide Band Video Tape

WC Worst Case

WCS Web Coverage Services

WDCD Wideband Data Capture Device

WELD Web-Enabled Landsat Data

WFS Web Feature Services

WG Working Group

WGCV Working Group for Calibration and Validation

WGS World Geodetic System or Wallops Ground Station

WGS84 World Geodetic System 1984

WILMA Wide Long Term Multi-Satellite Archive

WIP Work In Progress

WITL WRS2-In-The-Life

WLSWeighted Least Square

WMS Web Mapping Services

WO Work Order

WORSWallops Orbital Tracking Station

WOTIS Wallops Orbital Tracking Information Systems

WP Work Plan or Work Package

WPS Wallops Ground Station

WRWestern Range

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

WSGT White Sands (NASA) Ground Terminal

WS-I Web Services Interoperability

WVTCS Wideband Video Tape Conversion System

WWW World Wide Web



XIB Transmitter Interface Board

XML Extensible Markup Language

XS Multispectral SPOT Sensor

XSD XML Schema Definition

XTX X-Band Transmitter



YGC   Yaw Gyro Compassing

YH  Yellow-High

YL  Yellow-Low

YSF Yaw Steering Frame

YTD  Year-To-Date



Zulu time (same as GMT)

ZB Zettabyte

ZFS Zettabyte File System



0R  Zero Reformatted Data

6H Band 6 - high gain

6L Band 6 - low gain

6S Second Simulation of a Satellite Signal in the Solar Spectrum