USGS Commercial Data Purchases Data Dictionary

 

 

Acquisition Date

 

• Field Definition:  The year, month, and day the image was acquired.

                 Format:

                 YYYY/MM/DD

 

Catalog ID

• Field Definition:  The identifier that correlates with the scene in the Vendor's catalog.

                 Example:

                 Example of WORLDVIEW-1 Entity ID: 102001002F5D4C00

                 Example of WORLDVIEW-2 Entity ID: 10300100092D3A00

                 Example of WORLDVIEW-3 Entity ID: 104001000624410

 

Cloud Cover

• Field Definition:  Cloud Cover is the percentage of a scene that is obscured by clouds. Users are encouraged to preview browses images prior to downloading data products to confirm acceptable cloud cover impacts. Values may not be available for all scenes.

                 Valid Codes:

                 0 - 100

Coordinates - Decimal Degrees

• Field Definition:  The latitude and longitude are provided in decimal degrees for the following fields:

                 Values:      

                 Scene Center Latitude and Longitude

                 Northeast (NE) Corner Latitude and Longitude

                 Northwest (NW) Corner Latitude and Longitude

                 Southeast (SE) Corner Latitude and Longitude

                 Southwest (SW) Corner Latitude and Longitude

                 Latitude Format Decimal Degrees: -90.000 through 90.000

                 Longitude Format Decimal Degrees: -180.000 through 180.000

                 Number of decimal places will vary by dataset – check collection in EE.

 

Coordinates - Degrees, Minutes, Seconds

• Field Definition:  The latitude and longitude are provided in degrees, minutes, and seconds for the following fields:

                 Values:

                 Scene Center Latitude and Longitude

                 Northeast (NE) Corner Latitude and Longitude

                 Northwest (NW) Corner Latitude and Longitude

                 Southeast (SE) Corner Latitude and Longitude

                 Southwest (SW) Corner Latitude and Longitude

                Longitude Format:

                DDDMMSS.SSH

                DDD = Degree(s) with a range of 0 through 180

                MM = Minute(s) with a range of 0 through 59

                SS.SS = Second(s) with a range of 0 through 59.99

                H = Hemisphere with E for east and W for west

                Latitude Format:

                DDMMSS.SSH

                DD = Degree(s) with a range of 0 through 90

                MM = Minutes(s) with a range of 0 through 59

                SS.SS = Second(s) with a range of 0 through 59.99

                H = Hemisphere with N for north and S for south

 

Date Entered

• Field Definition:  The date the inventory record was added to the USGS EROS database.
  
   

Datum

• Field Definition:  The horizontal reference system associated with the image.

                 Values:

                 GDA 1994

                 GRS80

                 NAD27

                 NAD83

                 WGS84

                 WE

 

Entity ID

• Field Definition:  The naming convention of each scene is based on acquisition parameters.

                 Example:

                 Example of GEOEYE-1 Entity ID: GE120090615000062M00

                 Example of IRS-P6-AWIFS Entity ID: AF620040814172206M00

                 Example of IKONOS-2 Entity ID: IK220030120162900P00

                 Example of QUICKBIRD-2 Entity ID: QB220030320181551M02

                 Example of WORLDVIEW-1 Entity ID: WV1200805062146P00

                 Example of WORLDVIEW-2 Entity ID: WV220100925164844M00

                 Example of WORLDVIEW-3 Entity ID: WV320150108111736M00

                 Example of tiled Entity ID: WV320100913031748PR02C0300



                 Valid Format: SSNYYYYMMDDHHMMZZITTTTTTVV

                 SS = Platform, where AF = IRS-P6-AWIFS, GE = GEOEYE-1, IK = IKONOS, QB = QUICKBIRD, WV = WORLDVIEW

                 N = Satellite Number

                 YYYY = Year of Acquisition

                 MM = Month of Acquisition

                 DD = Day of Acquisition

                 HH = Hour of Acquisition

                 MM = Minutes of Acquisition

                 ZZ = Seconds of Acquisition

                 I = Sensor where M = Multispectral, P = Panchromatic, S = SWIR

                 TTTTTT = Tile number of scene *

                 VV = Version Number

                 *Only used in tile level products and omitted for scene level products.

 

Event

• Field Definition:  Name of the event associated with the image.
  
   

Event Date

• Field Definition:  The date of the event associated with the image
  
   

File Format

• Field Definition:  The type of file format available for download.
  
  
  
     Valid File Format Values for QuickBird-2 Satellite:
  
     NITF
  
     GeoTIFF
  
  
  
     Valid File Format Values for IKONOS-2 Satellite:
  
     MrSid
  
     NITF
  
     GeoTIFF
  
  
  
     Valid File Format Values for IRS-P6-AWIFS Satellite:
  
     GeoTIFF
  
  
  
     Valid File Format Values for WORLDVIEW-1, WORLDVIEW-2 and WORLDVIEW-3 Satellite:
  
     NITF
  
     GeoTIFF
  
   

License ID

• Field Definition:  The type of permissions assigned to each image. This is used to determine the agency(s) that have access to the data

                 Values:

                 1 = NON-COMMERCIAL UNRESTRICTED

                 2 = CLEARVIEW

                 3 = SINGLE ORGANIZATION - USGS

                 4 = CIVIL ORGANIZATION - CIVIL GOVERNMENT

                 5 = NEXTVIEW

                 6 = TIER 2 - CIVIL GOVERNMENT

                 7 = SINGLE ORGANIZATION - NASA

                 8 = SINGLE ORGANIZATION - ARMY

                 9 = SINGLE ORGANIZATION - USDA PROPER

                10 = CLEARVIEW

                11 = CLEARVIEW

                12 = TIER 1 - CIVIL GOVERNMENT

                13 = SI NEXTVIEW

                19 = GE NEXTVIEW

 

License Uplift Update

• Field Definition:  The date and time the license was last updated.
  
   

Map Projection

• Field Definition:  The method used to represent the 3-dimensional surface of the earth

                 Values:

                 Geographic

                 Ground Control Points (GCP)

                 Lambert Conformal Conic (LCC)

                 State Plane Coordinate System

                 Universal Transverse Mercator (UTM)

 

Number of Bands

• Field Definition:  The number of bands of data in the imagery.
  
   

Path Number (IRS P6-AWIFS data only)

• Field Definition:  The IRS-P6-AWIFS satellite track number.
  
   

Pixel Size X

• Field Definition:  The image Pixel width (X) measured in meters.
  
   

Pixel Size Y

• Field Definition:  The image Pixel width (Y) measured in meters.
  
   

Platform

• Field Definition:  The satellite from which the data was acquired.

                  Values:

                  GEOEYE-1

                  IRS-P6-AWIFS

                  IKONOS-2

                  ORBVIEW-3

                  QUICKBIRD-2

                  WORLDVIEW-1

                  WORLDVIEW-2

                  WORLDVIEW-3

 

Processing Level

• Field Definition:  The level of correction applied to the image. Processing Level will vary by satellite.

                 Values:

                 Geometrically Corrected

                 Level 1

                 Level 1B

                 Level 2A

                 Level 3A

                 Precision Geometrically Corrected

                 Standard Geometrically Corrected

                 Systematic Corrected

                 Terrain Corrected

 

Row Number (IRS P6-AWIFS data only)

• Field Definition:  The IRS P6-AWIF satellite row number.
  
   

Satellite

• Field Definition:  Specific Landsat vehicle number used to capture this acquisition.
  
   

Sensor

• Field Definition:  The satellite instrument from which the data was acquired.

                 Values:

                 Multispectral

                 Panchromatic

                 SWIR (Short-wave infrared)

 

Sun Azimuth

• Field Definition:  Azimuth is the angle of horizontal deviation, measured clockwise, of a bearing from a standard direction. The Sun azimuth angle at the scene center.

                 Values:

                 0 through 360.0 (represented in decimal)

                 Note: A positive value value (+) indicates angles to the East or clockwise from North: a negative value (-) indicates angles to the West or counter clockwise from North.

 

Sun Elevation

• Field Definition:  Elevation is the angle of vertical deviation, measured clockwise, of a bearing from a standard direction. The Sun elevation angle at the scene center.

                 Values:

                 0 through 90.0 (represented in decimal)

                 NOTE: A positive value (+) indicates a daytime scene; a negative value (-) indicates a nighttime scene.

 

UTM Zone

• Field Definition:  The UTM Zone number associated with the scene.
  
   

Vendor

• Field Definition:  The name of the company that provided the data.
  
   

Vendor Scene ID

• Field Definition:  The file name provided by the original vendor.