WorldView-4

Long name WorldView-4
Short name WV-4
Sensor type Optical, panchromatic (PAN) and multispectral (MS)

The telescope onboard the spacecraft is GeoEye Imaging System-2, also known as SpaceView 110, designed and built by ITT Corporation.

Platform WorldView-4
Key file name (use to open dataset) *.imd
Supported file name extensions .imd, .tif, .rpb, .xml, .jpg
Sections

Data product name and description
Distribution disk files
Returned data for supported format
References

Data product name and description

WorldView-4 is a third-generation, commercial Earth-observation satellite launched 11 November 2016. The spacecraft is operated by DigitalGlobe. With a maximum resolution of 31 centimeters (12 inches), WorldView-4 provides the highest resolution available commercially at time of launch.

WorldView-4 image data is available with the following product GSD levels:
  • 1.2 meters MS, 0.3 meters PAN
  • 1.6 meters MS, 0.4 meters PAN
  • 2.0 meters MS, 0.5 meters PAN
Note: The information provided herein is based on the data distributor's documentation cited under References.

Spectral bands:
Spectral range (nm)

Spatial resolution (m)*
(spectral resolution)

Maximum image dimensions
(Across track x along track, km)

Notes

B1 (Blue): 450 - 510
B2 (Green): 510 - 580
B3 (Red): 655 - 690
B4 (NIR): 780 - 920
PAN (Panchromatic): 450 - 800

PAN: 0.31 (11 bits per pixel)
MS:  1.24 (11 bits per pixel)

13.1 (at nadir) N/A

* Resolution is always nadir position unless noted otherwise.

WorldView-4 data image data is available in two processing levels:
  • Basic (Level 1B)
  • Standard (Level OR2A)
Processing level Horizontal accuracy (m) Description/notes
Basic (1B) N/A System-ready.

The most basic DigitalGlobe product. Sensor corrected, unprojected (raw) product. Also available in stereo mode.

Ideal for image manipulation and photogrammetric analysis with image-processing systems.

Standard (OR2A) N/A View-ready.

Projected and resampled, projected to average-base elevation. Also available in stereo mode.

Product is provided as a bundle (PAN + four MS) or as pansharpened (from three to four pansharpened bands).

Ideal for:
  1. Image manipulation and photogrammetric analysis with image-processing systems.
  2. Image viewing and feature analysis with geographic information systems

Distribution disk files

A WorldView-4 data set is organized in a specific folder structure on disk. GDB uses this folder structure and the file names to identify the data product type.

Warning: Data sets for this sensor are organized in a specific folder structure on disk. GDB uses this structure and the file names to identify the data product type. Do not alter the folder structure or any file names prior to data ingestion to ensure the image data and auxiliary information are imported correctly.

You can open a WorldView-4 data set by selecting the *.imd file.

When opening a WorldView-4 data set, the files read by GDB are as described in the following table.

File name Format Required Contents/details
*.tif, *.ntf GeoTIFF, NITF Yes Image data
*.imd Text Yes Image metadata
*.til Text No Text data
*.rpb Text Yes RPC information
*.xml Extensible Markup Language No Metadata
*.jpg Joint Photographic Experts Group No Browse image

Returned data for supported format

WorldView-4 data can be opened directly in its raw vendor format or imported into a PCIDSK (*.pix) file using the key file name (*.imd). For optimal processing, use the PCIDSK format.

The following table describes the data structure after it is opened by GDB.

Data product Data returned Details
Primary (1B) - Multispectral

4 x [16U] Raster channels
1 x [ORB] Orbit segment
1 x [BIN] Rational function model

N/A
Primary (1B) - Panchromatic

1 x [16U] Raster channel
1 x [ORB] Orbit segment
1 x [BIN] Rational function model

N/A
Standard (OR2A) - Multispectral

4 x [16U] Raster channels
1 x [ORB] Orbit segment
1 x [BIN] Rational function model

N/A
Standard (OR2A) - Panchromatic

1 x [16U] Raster channel
1 x [ORB] Orbit segment
1 x [BIN] Rational function model

N/A

References

For more information, visit: digitalglobe.com

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