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SPOT 4 and SPOT 5 North American Data Buy Data Dictionary Active

By Earth Resources Observation and Science (EROS) Center July 15, 2021

The Data Dictionaries are a set of information describing the contents, format, and structure of elements for EarthExplorer products.

 

Acquisition Date

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

                 Values:

                 YYYY/MM/DD

 

Bands

  • Field Definition:  The number of bands associated with this product. The multispectral bands are provided in 3 (Near IR), 2 (Red), 1 (Green), and 4 (ShortWave IR) order.

     

Cloud Cover

  • Field Definition:  The percentage of the full scene obscured by cloud cover.

                 Values:

                 Zero Percent Cloud Cover

                 10% or Less Cloud Cover

                 25% or Less Cloud Cover

                 80% or Less Cloud Cover

                 100% or Less Cloud Cover

 

Cloud Cover Quote Area 1-8

  • Field Definition:  The Cloud Cover Quote for Areas 1 through 8 indicates the percentage of a scene that is obscured by clouds.  The scene is divided into 8 equal areas with each area given a cloud cover quote.

                 Values:

Areas Areas
1 2
3 4
5 6
7 8

               Areas of image for Cloud Cover Quotes:Values:

               Valid Cloud Cover Values:

               Zero Cloud Cover

               Zero – 10% Cloud Cover

               10 – 25% Cloud Cover

               25 – 80% Cloud Cover

               80 – 100% Cloud Cover

 

Coordinates - Decimal Degrees

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

                 Values:

                 Coordinates in decimal degrees for following fields:

                 Scene Center Latitude and Longitude

                 NE Corner Latitude and Longitude

                 NW Corner Latitude and Longitude

                 SE Corner Latitude and Longitude

                 SW Corner Latitude and Longitude

                 Latitude Format Decimal Degrees: -90 - 90

                 Longitude Format Decimal Degrees: -180 - 180

 

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

 

Entity ID

  • Field Definition:  This field describes the naming convention of each file.

                Format:

                SKKKJJJYYMMDDHHMMSSIXC

                S = Satellite (5 = SPOT 5, 4 = SPOT 4)

                KKK = K Path

                JJJ = J Row

                YYMMDD = Acquisition Date (Year, Month, Day)

                HHMMSS = Acquisition Time (Hours, Minutes, Seconds)

                I = Instrument number

                X = Sensor (I,J = Multispectral; A,B,M,T = Panchromatic)

                C = Shift Distance Correction (valid values = 0-9 see Scene Shift definition)

                Example:

                56072770912261636142J0

 

File Format

  • Field Definition:  The type of file format used for the scene.

                 Values:

                 Level 1A = An image file in GeoTIFF format is included in the Digital Image Map (DIMAP) bundle. The GeoTIFF format provides embedded geographic information along with the image data.

                 Level 1Gst = An image file in GeoTIFF format which includes embedded geographic information along with the image data.

                 Level 1T = An image file in GeoTIFF format which includes embedded geographic information along with the image data.

                 Full Resolution Browse = A full resolution image provided in JPEG format.

                 GIS Ready Bundle = A full resolution image in JPEG format is bundled with a world file to provide users with a georeferenced JPEG image.

 

Geometric Process Level

  • Field Definition:  All results indicate "RAW". All SPOT scenes are initially processed to be a Level 1A which allows users to do their own geometric processing. Higher level products such as L1Gst and L1T may be available as well.

                 Values:

                 Level 1Gst provides systematic geometric corrections derived from spacecraft ephemeris data while employing a 90-meter Digital Elevation Model (DEM) for topographic accuracy.

                 Level 1T provides geometric corrections incorporating ground control points while employing a 90-meter Digital Elevation Model (DEM) for topographic accuracy.

 

GRS J Row Number

  • Field Definition:  The SPOT Grid Reference System (GRS) is used to identify the geographic location of SPOT images. The grid is made up of nodes located at the intersection of columns (K) and rows (J). When data strips are split into scenes, the SPOT GRS links each scene with two K, J designators representing a GRS node. Once the K, J designators have been identified for a new scene, the designators are added to that scene's characteristics file.

                 Values:

                 009 through 691

 

GRS K Path Number

  • Field Definition:  The SPOT Grid Reference System (GRS) is used to identify the geographic location of SPOT images. The grid is made up of nodes located at the intersection of columns (K) and rows (J). When data strips are split into scenes, the SPOT GRS links each scene with two K, J designators representing a GRS node. Once the K, J designators have been identified for a new scene, the designators are added to that scene's characteristics file.

                  Values:

                  001 through 738

 

Instrument

  • Field Definition:  The instrument used while acquiring this scene.

                 Example:

                 HRVIR1 = High Resolution Visible Infrared (SPOT 4)

                 HRVIR2 = High Resolution Visible Infrared (SPOT 4)

                 HRG1 = High Resolution Geometric (SPOT 5)

                 HRG2 = High Resolution Geometric (SPOT 5)

 

Processing Level

  • Field Definition:  The processing level indicates the highest level of correction that has been applied to the scene. For multispectral scenes, bands are provided in 3 (Near IR), 2 (Red), 1 (Green), and 4 (ShortWave IR) order.

                 Values:

                 Level 1A (L1A) = Radiometric corrections to compensate for variations due to detector sensitivity. The zip file contains the scene in GeoTIFF format.

                 Level 1Gst (L1Gst) = Radiometric and systematic geometric corrections, derived from spacecraft ephemeris data, have  been applied while employing a 90-meter Digital Elevation Model for topographic accuracy. L1Gst scenes are available in GeoTIFF format.

                 Level 1T (L1T) = Radiometric, systematic and geometric corrections incorporating ground control points have been applied while employing a 90-meter Digital Elevation Model (DEM) for topographic accuracy. Geodetic accuracy of the product depends on the accuracy of the ground control points and are expected to be within 2.5 pixels. Scenes that do not have adequate ground control will be processed to the best level of correction (L1Gst). L1T scenes are available in GeoTIFF format.

                 Full Resolution Browse = A full resolution image provided in JPEG format for scenes that have been processed to Level 1T.

                 GIS Ready Bundle = A full resolution image in JPEG format is bundled with metadata and a world file to use in geographic information systems, image processing software and web mapping applications. This option provides users with a  georeferenced JPEG image and is only available for scenes that have been processed to Level 1T.

 

Quality

  • Field Definition:  Full scene quality.

                 Values:

                  E = Excellent

                  G = Good

                  P = Poor

                  U = Unusable

 

Quality Quote Area 1 - 4

  • Field Definition:  Quality Image Quote for Areas 1 through 4. The image is divided into 4 equal horizontal areas with each area given a quality quote.
    Areas
    1
    2
    3
    4

       Values:

       Areas of image for Quality Quotes:

       E = Excellent

       G = Good

       P = Poor

       U = Unusable

     

Radiometric Process Level

  • Field Definition:  All scenes have a system level of radiometric processing to compensate for variations due to detector sensitivity.

     

Receiving Station

  • Field Definition:  The original receiving station for data download.

                 Valid Codes:

                 LM = Lethbridge, Alberta, Canada

                 WX = Wichita, Kansas

                 EDC = EROS Data Center Sioux Falls, South Dakota

                 CS = Miami, Florida

                 ME = Mexico City, Mexico

                 SLS_TOULOUSE = Tolouse, France

 

Resolution

  • Field Definition:  The resolution of the image in meters.

                 Values:

                 2.5 = SPOT 5 Panchromatic

                 5 = SPOT 5 Panchromatic (SPOT 5 only)

                 10 = SPOT 5 Multispectral or SPOT 4 Panchromatic

                 20 = Spot 4 Multispectral

 

Satellite

  • Field Definition:  The SPOT satellite which acquired the data.

     

Scene Orientation

  • Field Definition:  The scene orientation indicates deviation from true north (nadir) in degrees.

     

Scene Shift

  • Field Definition:  Scene shift distance correction value of "1" was assigned to all shifted images processed prior to September 20, 2010. As of September 20, 2010 the true correction values of 0 - 9 were used.

                 Values:

                 0 - 9 = 0 - 90 Percent Shift

 

Sensor Type

  • Field Definition:  The sensor type indicates the mode used to acquire the scene. SPOT 4 and 5 products are acquired in both panchromatic and multispectral modes, however not all scenes are available in both modes. A panchromatic scene is a single-band image, and a color product is derived from the multispectral bands. The multispectral bands are provided in 3 (Near IR), 2 (Red), 1 (Green), and 4 (ShortWave IR) order.

                 Values:

                 Panchromatic

                 Multispectral

  • Overview

    The Data Dictionaries are a set of information describing the contents, format, and structure of elements for EarthExplorer products.

     

    Acquisition Date

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

                     Values:

                     YYYY/MM/DD

     

    Bands

    • Field Definition:  The number of bands associated with this product. The multispectral bands are provided in 3 (Near IR), 2 (Red), 1 (Green), and 4 (ShortWave IR) order.

       

    Cloud Cover

    • Field Definition:  The percentage of the full scene obscured by cloud cover.

                     Values:

                     Zero Percent Cloud Cover

                     10% or Less Cloud Cover

                     25% or Less Cloud Cover

                     80% or Less Cloud Cover

                     100% or Less Cloud Cover

     

    Cloud Cover Quote Area 1-8

    • Field Definition:  The Cloud Cover Quote for Areas 1 through 8 indicates the percentage of a scene that is obscured by clouds.  The scene is divided into 8 equal areas with each area given a cloud cover quote.

                     Values:

    Areas Areas
    1 2
    3 4
    5 6
    7 8

                   Areas of image for Cloud Cover Quotes:Values:

                   Valid Cloud Cover Values:

                   Zero Cloud Cover

                   Zero – 10% Cloud Cover

                   10 – 25% Cloud Cover

                   25 – 80% Cloud Cover

                   80 – 100% Cloud Cover

     

    Coordinates - Decimal Degrees

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

                     Values:

                     Coordinates in decimal degrees for following fields:

                     Scene Center Latitude and Longitude

                     NE Corner Latitude and Longitude

                     NW Corner Latitude and Longitude

                     SE Corner Latitude and Longitude

                     SW Corner Latitude and Longitude

                     Latitude Format Decimal Degrees: -90 - 90

                     Longitude Format Decimal Degrees: -180 - 180

     

    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

     

    Entity ID

    • Field Definition:  This field describes the naming convention of each file.

                    Format:

                    SKKKJJJYYMMDDHHMMSSIXC

                    S = Satellite (5 = SPOT 5, 4 = SPOT 4)

                    KKK = K Path

                    JJJ = J Row

                    YYMMDD = Acquisition Date (Year, Month, Day)

                    HHMMSS = Acquisition Time (Hours, Minutes, Seconds)

                    I = Instrument number

                    X = Sensor (I,J = Multispectral; A,B,M,T = Panchromatic)

                    C = Shift Distance Correction (valid values = 0-9 see Scene Shift definition)

                    Example:

                    56072770912261636142J0

     

    File Format

    • Field Definition:  The type of file format used for the scene.

                     Values:

                     Level 1A = An image file in GeoTIFF format is included in the Digital Image Map (DIMAP) bundle. The GeoTIFF format provides embedded geographic information along with the image data.

                     Level 1Gst = An image file in GeoTIFF format which includes embedded geographic information along with the image data.

                     Level 1T = An image file in GeoTIFF format which includes embedded geographic information along with the image data.

                     Full Resolution Browse = A full resolution image provided in JPEG format.

                     GIS Ready Bundle = A full resolution image in JPEG format is bundled with a world file to provide users with a georeferenced JPEG image.

     

    Geometric Process Level

    • Field Definition:  All results indicate "RAW". All SPOT scenes are initially processed to be a Level 1A which allows users to do their own geometric processing. Higher level products such as L1Gst and L1T may be available as well.

                     Values:

                     Level 1Gst provides systematic geometric corrections derived from spacecraft ephemeris data while employing a 90-meter Digital Elevation Model (DEM) for topographic accuracy.

                     Level 1T provides geometric corrections incorporating ground control points while employing a 90-meter Digital Elevation Model (DEM) for topographic accuracy.

     

    GRS J Row Number

    • Field Definition:  The SPOT Grid Reference System (GRS) is used to identify the geographic location of SPOT images. The grid is made up of nodes located at the intersection of columns (K) and rows (J). When data strips are split into scenes, the SPOT GRS links each scene with two K, J designators representing a GRS node. Once the K, J designators have been identified for a new scene, the designators are added to that scene's characteristics file.

                     Values:

                     009 through 691

     

    GRS K Path Number

    • Field Definition:  The SPOT Grid Reference System (GRS) is used to identify the geographic location of SPOT images. The grid is made up of nodes located at the intersection of columns (K) and rows (J). When data strips are split into scenes, the SPOT GRS links each scene with two K, J designators representing a GRS node. Once the K, J designators have been identified for a new scene, the designators are added to that scene's characteristics file.

                      Values:

                      001 through 738

     

    Instrument

    • Field Definition:  The instrument used while acquiring this scene.

                     Example:

                     HRVIR1 = High Resolution Visible Infrared (SPOT 4)

                     HRVIR2 = High Resolution Visible Infrared (SPOT 4)

                     HRG1 = High Resolution Geometric (SPOT 5)

                     HRG2 = High Resolution Geometric (SPOT 5)

     

    Processing Level

    • Field Definition:  The processing level indicates the highest level of correction that has been applied to the scene. For multispectral scenes, bands are provided in 3 (Near IR), 2 (Red), 1 (Green), and 4 (ShortWave IR) order.

                     Values:

                     Level 1A (L1A) = Radiometric corrections to compensate for variations due to detector sensitivity. The zip file contains the scene in GeoTIFF format.

                     Level 1Gst (L1Gst) = Radiometric and systematic geometric corrections, derived from spacecraft ephemeris data, have  been applied while employing a 90-meter Digital Elevation Model for topographic accuracy. L1Gst scenes are available in GeoTIFF format.

                     Level 1T (L1T) = Radiometric, systematic and geometric corrections incorporating ground control points have been applied while employing a 90-meter Digital Elevation Model (DEM) for topographic accuracy. Geodetic accuracy of the product depends on the accuracy of the ground control points and are expected to be within 2.5 pixels. Scenes that do not have adequate ground control will be processed to the best level of correction (L1Gst). L1T scenes are available in GeoTIFF format.

                     Full Resolution Browse = A full resolution image provided in JPEG format for scenes that have been processed to Level 1T.

                     GIS Ready Bundle = A full resolution image in JPEG format is bundled with metadata and a world file to use in geographic information systems, image processing software and web mapping applications. This option provides users with a  georeferenced JPEG image and is only available for scenes that have been processed to Level 1T.

     

    Quality

    • Field Definition:  Full scene quality.

                     Values:

                      E = Excellent

                      G = Good

                      P = Poor

                      U = Unusable

     

    Quality Quote Area 1 - 4

    • Field Definition:  Quality Image Quote for Areas 1 through 4. The image is divided into 4 equal horizontal areas with each area given a quality quote.
      Areas
      1
      2
      3
      4

         Values:

         Areas of image for Quality Quotes:

         E = Excellent

         G = Good

         P = Poor

         U = Unusable

       

    Radiometric Process Level

    • Field Definition:  All scenes have a system level of radiometric processing to compensate for variations due to detector sensitivity.

       

    Receiving Station

    • Field Definition:  The original receiving station for data download.

                     Valid Codes:

                     LM = Lethbridge, Alberta, Canada

                     WX = Wichita, Kansas

                     EDC = EROS Data Center Sioux Falls, South Dakota

                     CS = Miami, Florida

                     ME = Mexico City, Mexico

                     SLS_TOULOUSE = Tolouse, France

     

    Resolution

    • Field Definition:  The resolution of the image in meters.

                     Values:

                     2.5 = SPOT 5 Panchromatic

                     5 = SPOT 5 Panchromatic (SPOT 5 only)

                     10 = SPOT 5 Multispectral or SPOT 4 Panchromatic

                     20 = Spot 4 Multispectral

     

    Satellite

    • Field Definition:  The SPOT satellite which acquired the data.

       

    Scene Orientation

    • Field Definition:  The scene orientation indicates deviation from true north (nadir) in degrees.

       

    Scene Shift

    • Field Definition:  Scene shift distance correction value of "1" was assigned to all shifted images processed prior to September 20, 2010. As of September 20, 2010 the true correction values of 0 - 9 were used.

                     Values:

                     0 - 9 = 0 - 90 Percent Shift

     

    Sensor Type

    • Field Definition:  The sensor type indicates the mode used to acquire the scene. SPOT 4 and 5 products are acquired in both panchromatic and multispectral modes, however not all scenes are available in both modes. A panchromatic scene is a single-band image, and a color product is derived from the multispectral bands. The multispectral bands are provided in 3 (Near IR), 2 (Red), 1 (Green), and 4 (ShortWave IR) order.

                     Values:

                     Panchromatic

                     Multispectral