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Worldview-3


Worldview-3 spacecraft

Worldview-3 spacecraft, © DigitalGlobe, USGS


Mission and sensor parameters

Launched on the 13 August 2014, Worldview-3 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. Panchromatic, 4-Bands VIS-NIR, 8-Bands VIS-NIR, and 8-Bands SWIR products are part of the Worldview-3 offer. In the International Charter, Worldview-3 data is gathered via VHR data provisioning of USGS (act as mission Owner in the Charter Governance).

Mission parameters

Table 1 provides a summary of the Worldview-3 mission.

Parameter Specifications
EO Mission Worldview-3
Providing Agency DigitalGlobe
Date of launch 2014-08-13
Temporal coverage 2014-09-01 - present
Mission status On Going
Mission Life Expected 12 years
Orbit Type Sun-synchronous
Equator crossing Time 1:30 PM descending Node
Orbit Height 617 km
Orbit Period 97 min
Revisit Frequency <1.0 day (1 m GSD ), 4.5 days at 20° off-nadir or less
Nominal Swath Width 13.1 km at nadir
Table 1 - Worldview-3 mission parameters.

Sensor specifications

Below specifications of the WV-3 Imager (WV110) optical earth observation sensor on board the Worldview-3 platform.

Parameter Specifications
Imager Type Pushbroom with a 35k pixel dectector array for PAN and a 9,3k pixel detector array for MS bands
Imaging Mode PAN and MS (VIS, NIR, RE, SWIR)
Pan spectral range 450 - 800 nm
Coastal spectral range 400 - 450 nm
Blue spectral range 450 - 510 nm
Green spectral range 510 - 580 nm
Yellow spectral range 585 - 625 nm
Red spectral range 630 - 690 nm
Red Edge spectral range 705 - 745 nm
NIR1 spectral range 770 - 895 nm
NIR2 spectral range 860 - 1040 nm
SWIR1 spectral range 1195 - 1225 nm
SWIR2 spectral range 1550 - 1590 nm
SWIR3 spectral range 1640 - 1680 nm
SWIR4 spectral range 1710 - 1750 nm
SWIR5 spectral range 2145 - 2185 nm
SWIR6 spectral range 2185 - 2225 nm
SWIR7 spectral range 2235 - 2285 nm
SWIR8 spectral range 2295 - 2365 nm
Resolution Very High Resolution - O-VHR (0 - 1m)
GSD 31 cm (PAN), 1.25 m (MS), 3.7 m (SWIR) at nadir
Dynamic Range 11-bits per pixel
Table 2 - Worldview-3 WV-3 imager (WV110) sensor parameters.

In total Worldview-3 spectral Bands are 29:

  • Panchromatic

  • 8-band multispectral (coastal, blue, green, yellow, red, red edge, NIR-1 and NIR-2)

  • 8-band shortwave infrared (SWIR)

  • 12-band CAVIS (corrects for Clouds, Aerosols, Vapors, Ice and Snow)

Worldview-3 products are offered in multiple options as described in the following table:

Parameter Specifications
4-Bands Multispectral Blue, Green, Red, NIR1
4-Bands Pan-sharpened Blue, Green, Red, NIR1
4-Bands Natural Color pan-sharpened Blue, Green, Red
4-Bands Bundle PAN, Blue, Green, Red, NIR1
3-bands Natural Color pan-sharpened Blue, Green, Red
3-bands Coloured Infrared pan-sharpened Green, Red, NIR
8-Bands Multispectral COASTAL, Blue, Green, Yellow, Red, Red EDGE, NIR1, NIR2
8-Bands Bundle PAN, COASTAL, Blue, Green, Yellow, Red, Red EDGE, NIR1, NIR2
Table 3 - Worldview-3 product options.

The 4-Bands Multispectral, 8-Bands Multispectral products are the ones often received in the Charter.

Ingested format

Information extracted from product annotation included in the STAC item of a Worldview-3 dataset are listed below.

Properties

STAC item content about properties for a Worldview-3 8-Bands Multispectral Dataset is the following:

  "properties": {
    "platform": "worldview-3",
    "constellation": "worldview-3",
    "mission": "worldview-3",
    "instruments": [
      "msi"
    ],
    "sensor_type": "optical",
    "gsd": 0.00001476469494,
    "datetime": "2022-06-23T06:19:12Z",
    "created": "2022-06-23T17:17:06.7569561Z",
    "updated": "2022-09-01T11:13:35.4086091Z",
    "title": "WORLDVIEW-3 MSI LV1B 2022-06-23 06:19:12",
    "providers": [
      {
        "name": "USGS",
        "roles": [
          "licensor"
        ]
      }
    ],
    "license": "proprietary",
    "disaster:call_ids": [
      876
    ],
    "disaster:resolution_class": "VHR",
    "cpe:cos2_id": "876-USGS-WORLDVIEW_3-urn_ogc_def_EOP_USGS__WORLDVIEW_3_WV03N33_174861E069_5258332022062300000000MS00",
  }

View

STAC item content about View Geometry for a Worldview-3 Dataset is the following:

  "properties": {
    "view:sun_azimuth": 119.7,
    "view:sun_elevation": 72.8
  }

Processing

STAC item content about Processing for a Worldview-3 Dataset is the following:

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

Geometry

STAC item content about Geometry for a Worldview-3 Dataset is the following:

  "geometry": {
    "type": "Polygon",
    "coordinates": [
      [
        [
          69.4428607,
          33.1079874
        ],
        [
          69.6181767,
          33.1079874
        ],
        [
          69.6181767,
          33.2277143
        ],
        [
          69.4428607,
          33.2277143
        ],
        [
          69.4428607,
          33.1079874
        ]
      ]
    ]
  },
  "bbox": [
    69.4428607,
    33.1079874,
    69.6181767,
    33.2277143
  ]

Assets

STAC item content about assets (annotation, quicklooks and spectral bands files harvested from the source product) and EO bands for a Worldview-3 8-Bands Multispectral Dataset is the following:

  "assets": {
    "manifest": {
      "type": "application/xml",
      "roles": [
        "metadata"
      ],
      "href": "https://.../WV03N33_174861E069_5258332022062300000000MS00/manifest.XML",
      "filename": "vendor_metadata/22JUN23061912-M1BS-506523462020_01_P002.XML",
      "file:size": 921364
    },
    "overview": {
      "type": "image/jpeg",
      "roles": [
        "overview"
      ],
      "href": "https://.../WV03N33_174861E069_5258332022062300000000MS00/overview.jpg",
      "filename": "WV03N33_174861E069_5258332022062300000000MS00_BR005003002.jpg",
      "file:size": 109235
    },
    "metadata": {
      "type": "text/plain",
      "roles": [
        "metadata"
      ],
      "href": "https://.../WV03N33_174861E069_5258332022062300000000MS00/metadata.txt",
      "filename": "WV03N33_174861E069_5258332022062300000000MS00_DR005003002.txt",
      "file:size": 1954
    },
    "pms": {
      "type": "image/tiff",
      "roles": [
        "data",
        "dn"
      ],
      "href": "https://.../WV03N33_174861E069_5258332022062300000000MS00/pms.tif",
      "filename": "WV03N33_174861E069_5258332022062300000000MS00_GR005003002.tif",
      "file:size": 1540653448,
      "gsd": 0.00001476469494,
      "proj:shape": [
        7168,
        11264
      ],
      "eo:bands": [
        {
          "name": "coastal",
          "common_name": "coastal",
          "center_wavelength": 0.4274,
          "solar_illumination": 1757.89,
          "full_width_half_max": 0.02025
        },
        {
          "name": "blue",
          "common_name": "blue",
          "center_wavelength": 0.4819,
          "solar_illumination": 2004.61,
          "full_width_half_max": 0.027
        },
        {
          "name": "green",
          "common_name": "green",
          "center_wavelength": 0.5471,
          "solar_illumination": 1830.18,
          "full_width_half_max": 0.0309
        },
        {
          "name": "yellow",
          "common_name": "yellow",
          "center_wavelength": 0.6043,
          "solar_illumination": 1712.07,
          "full_width_half_max": 0.01905
        },
        {
          "name": "red",
          "common_name": "red",
          "center_wavelength": 0.6601,
          "solar_illumination": 1535.33,
          "full_width_half_max": 0.02925
        },
        {
          "name": "rededge",
          "common_name": "rededge",
          "center_wavelength": 0.7227,
          "solar_illumination": 1348.08,
          "full_width_half_max": 0.01935
        },
        {
          "name": "nir08",
          "common_name": "nir08",
          "center_wavelength": 0.824,
          "solar_illumination": 1055.94,
          "full_width_half_max": 0.0502
        },
        {
          "name": "nir09",
          "common_name": "nir09",
          "center_wavelength": 0.9136,
          "solar_illumination": 858.77,
          "full_width_half_max": 0.04445
        }
      ],
      "raster:bands": [
        {
          "scale": 0.29778273135802463,
          "offset": -7.154
        },
        {
          "scale": 0.29703507777777777,
          "offset": -4.189
        },
        {
          "scale": 0.19319452233009712,
          "offset": -3.287
        },
        {
          "scale": 0.16544251968503937,
          "offset": -1.816
        },
        {
          "scale": 0.23244964615384614,
          "offset": -1.35
        },
        {
          "scale": 0.1535373850129199,
          "offset": -2.617
        },
        {
          "scale": 0.1615098529880478,
          "offset": -3.752
        },
        {
          "scale": 0.1110618040494938,
          "offset": -1.507
        }
      ]
    },
    "thumbnail": {
      "type": "image/jpeg",
      "roles": [
        "thumbnail"
      ],
      "title": "Acquisition Thumbnail",
      "href": "https://.../WV03N33_174861E069_5258332022062300000000MS00/thumbnail.jpg"
    }
  }

Product Calibration

For Worldview-3 products calibration refer to the Optical Products Calibration (OPT-Calib) service and the calibration sheet available here.