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

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:

Image manipulation and photogrammetric analysis with image-processing systems.
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