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GeoEye-1

GeoEye-1 spacecraft

Mission and sensor parameters

Launched on the 6 September 2008, GeoEye-1 is an operational earth imaging satellite which is part of the WorldView constellation (QuickBird, WorldView-1/-2/-3/-4 and GeoEye-1 satellites) and is owned by DigitalGlobe in the United States. Operated by Maxar the GeoEye-1 high resolution optical products are available as part of the Maxar Standard Satellite Imagery products.

Mission parameters

Parameter Specifications
EO Mission GeoEye-1
Providing Agency NGA, Maxar Technologies
Date of launch 2008-09-06
Temporal coverage 2008-10-01 - present
Mission status onGoing
Mission Life Expected >10 years
Orbit Type Sun-synchronous
Equator crossing Time 10:30 AM descending node
Orbit Height 681 km
Orbit Period 98 min
Revisit Frequency 2.6 days at 30° off-nadir
Nominal Swath Width 15.3 km at nadir

Table 1 - GeoEye-1 mission parameters.

Sensor specifications

Below specifications of the GeoEye Imaging System (GIS) optical earth observation sensor on board the GeoEye-1 platform.

Parameter Specifications
Imager Type Pushbroom imager. Line scan imaging system with TDI (Time Delay Integration) capability
Imaging Mode PAN and MS (VIS, NIR)
Pan spectral range 450 - 800 nm
Blue spectral range 450 - 510 nm
Green spectral range 510 - 580 nm
Red spectral range 655 - 690 nm
NIR spectral range 780 - 920 nm
Resolution Very High Resolution - VHR (0 - 5m)
GSD 41 cm (PAN) and 1.65 (MS) at nadir
Dynamic Range 11-bits per pixel

Table 2 - GeoEye-1 GIS sensor parameters.

Ingested format

Information extracted from product annotation included in the STAC item of a GeoEye-1 dataset are listed below

Properties

STAC item content about properties for a Geoeye-1 Dataset is the following:

  "properties": {
    "platform": "geoeye-1",
    "constellation": "geoeye-1",
    "mission": "geoeye-1",
    "instruments": [
      "msi"
    ],
    "sensor_type": "optical",
    "gsd": 2,
    "datetime": "2022-08-27T02:33:18Z",
    "created": "2022-08-30T00:08:22.8259172Z",
    "updated": "2022-08-31T15:51:14.6206451Z",
    "title": "GEOEYE-1 MSI LV1B 2022-08-27 02:33:18",
    "providers": [
      {
        "name": "Maxar",
        "roles": [
          "licensor"
        ]
      }
    ],
    "license": "proprietary"
  }

View

STAC item content about View Geometry for a Geoeye-1 Dataset is the following:

  "properties": {
    "view:sun_azimuth": 106.4,
    "view:sun_elevation": 69,
  }

Processing

STAC item content about Processing for a Geoeye-1 Dataset is the following:

  "properties": {
    "processing:level": "LV1B"
  }

Geometry

STAC item content about Geometry for a Geoeye-1 Dataset is the following:

  "geometry": {
    "type": "Polygon",
    "coordinates": [
      [
        [
          121.544444444444,
          17.0383333333333
        ],
        [
          121.6925,
          17.0383333333333
        ],
        [
          121.6925,
          17.0708333333333
        ],
        [
          121.544444444444,
          17.0708333333333
        ],
        [
          121.544444444444,
          17.0383333333333
        ]
      ]
    ]
  },
  "bbox": [
    121.544444444444,
    17.0383333333333,
    121.6925,
    17.0708333333333
  ]

Assets

STAC item content about assets (annotation, quicklooks and spectral bands files harvested from the source product) and EO bands for a Geoeye-1 Dataset is the following:

  "assets": {
    "overview": {
      "type": "image/jpeg",
      "roles": [
        "overview"
      ],
      "href": "https://.../GE01N17_054583E121_6184722022082700000000MS01/overview.jpg",
      "filename": "GE01N17_054583E121_6184722022082700000000MS01_BU003002001.jpg",
      "file:size": 30580
    },
    "metadata": {
      "type": "text/plain",
      "roles": [
        "metadata"
      ],
      "href": "https://.../GE01N17_054583E121_6184722022082700000000MS01/metadata.txt",
      "filename": "GE01N17_054583E121_6184722022082700000000MS01_DU003002001.txt",
      "file:size": 1931
    },
    "bluegreenrednir": {
      "type": "image/tiff",
      "roles": [
        "data",
        "dn"
      ],
      "href": "https://.../GE01N17_054583E121_6184722022082700000000MS01/bluegreenrednir.tif",
      "filename": "GE01N17_054583E121_6184722022082700000000MS01_GU003002001.tif",
      "file:size": 251691672,
      "gsd": 2,
      "proj:shape": [
        3072,
        10240
      ],
      "eo:bands": [
        {
          "name": "blue",
          "common_name": "blue",
          "center_wavelength": 0.48,
          "solar_illumination": 1993.18,
          "full_width_half_max": 0.03
        },
        {
          "name": "green",
          "common_name": "green",
          "center_wavelength": 0.545,
          "solar_illumination": 1828.83,
          "full_width_half_max": 0.03
        },
        {
          "name": "red",
          "common_name": "red",
          "center_wavelength": 0.673,
          "solar_illumination": 1491.49,
          "full_width_half_max": 0.03
        },
        {
          "name": "nir08",
          "common_name": "nir08",
          "center_wavelength": 0.85,
          "solar_illumination": 1022.58,
          "full_width_half_max": 0.03
        }
      ],
      "raster:bands": [
        {
          "scale": 0.15652844999999999,
          "offset": -4.537
        },
        {
          "scale": 0.17079901999999997,
          "offset": -4.175
        },
        {
          "scale": 0.1616161485142857,
          "offset": -3.754
        },
        {
          "scale": 0.09535441999999998,
          "offset": -3.87
        }
      ]
    },
    "rpb": {
      "type": "application/octet-stream",
      "roles": [
        "metadata"
      ],
      "href": "https://.../GE01N17_054583E121_6184722022082700000000MS01/rpb.RPB",
      "filename": "vendor_metadata/22AUG27023318-M1BS-506728946010_01_P002.RPB",
      "file:size": 1862
    },
    "manifest": {
      "type": "application/xml",
      "roles": [
        "metadata"
      ],
      "href": "https://.../GE01N17_054583E121_6184722022082700000000MS01/manifest.XML",
      "filename": "vendor_metadata/22AUG27023318-M1BS-506728946010_01_P002.XML",
      "file:size": 1110700
    },
    "thumbnail": {
      "type": "image/jpeg",
      "roles": [
        "thumbnail"
      ],
      "title": "Acquisition Thumbnail",
      "href": "https://.../GE01N17_054583E121_6184722022082700000000MS01/thumbnail.jpg"
    }
  },

Product Calibration

For GeoEye-1 products calibration refer to the Optical Products Calibration (OPT-Calib) service and the calibration sheet available here.