Maxar-Legion

Long name	Maxar-Legion
Short name	MLG
Sensor type	Optical, panchromatic (PAN) and multispectral (MS)
Platform	Maxar-Legion
Key file name (use to open dataset)	*.IMD
Supported file name extensions	.IMD, .TIF, .TIL, .RPB, .XML, .JPG, .EPH, .ATT, .GEO
Sections	Data product name and description Distribution disk files Returned data for supported format References

Data product name and description

Maxar-Legion (also called WorldView Legion) is an new generation, earth-observation electro-optical satellite constellation. The first two satellites of the constellation were launched in May 2024. The constellation is managed by company Maxar Space Systems.

Maxar-Legion image data is available with the following GSD levels: eight multispectral bands with 1.16 meter resolution, one Panchromatic band with 0.29 meter resolution.

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)	Swath width	Notes
Band_C Coastal (400 - 500 nm) Band_B Blue (450 - 510 nm) Band_G Green (510 - 580 nm) Band_Y Yellow (585 - 625 nm) Band_R Red (630 - 690 nm) Band_RE1 Red Edge 1 (695 - 715 nm) Band_RE2 Red Edge 2 (730 - 750 nm) Band_N (780 - 920 nm)	Multispectral: 1.16 (16 bits per pixel)	9 km (at nadir)	N/A
Band_P Panchromatic (450 - 800 nm)	Panchromatic: 0.29 (16 bits per pixel)	9 km (at nadir)	N/A
Band_B Blue (450 - 510 nm) Band_G Green (510 - 580 nm) Band_R Red (630 - 690 nm) Band_N (780 - 920 nm)	Pansharpened: 0.29 (8 bits per pixel)	9 km (at nadir)	N/A
Band_R Red (630 - 690 nm) Band_G Green (510 - 580 nm) Band_B Blue (450 - 510 nm)	OrthoRectified 3D Pansharpened: 0.29 (8 bits per pixel)	9 km (at nadir)	N/A

* Resolution is always nadir position unless noted otherwise.

Maxar-Legion data image data is available in three processing levels:

Basic (Level 1B)
Standard (Level OR2A)
OrthoRectified3 (Level 3D)

Processing level	Description	Notes
Basic (1B)	System-ready. Basic products (Level 1B) provide sensor-oriented, radiometically-calibrated mono and stereo imagery for users to do their own image geo or orthorectification. Ideal for image manipulation and photogrammetric analysis with image-processing systems.	N/A
Standard (OR2A)	View-ready. Standard products (Level OR2A) are map projected and resampled to average base elevation for image manipulation and analysis by image processing software. 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	N/A
OrthoRectified (3D)	Map-ready High-quality standardized orthorectified imagery; optimized resampling, color balancing, and mosaicking doesn’t apply. Pan-sharpening is an option. Ortho Products ideal forimage viewing and locational reference when high positional accuracy is required.	N/A

Processing level

Description

Notes

Basic (1B)

System-ready.

Basic products (Level 1B) provide sensor-oriented, radiometically-calibrated mono and stereo imagery for users to do their own image geo or orthorectification.

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

N/A

Standard (OR2A)

View-ready.

Standard products (Level OR2A) are map projected and resampled to average base elevation for image manipulation and analysis by image processing software.

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

N/A

OrthoRectified (3D)

Map-ready

High-quality standardized orthorectified imagery; optimized resampling, color balancing, and mosaicking doesn’t apply.

Pan-sharpening is an option.

Ortho Products ideal forimage viewing and locational reference when high positional accuracy is required.

N/A

Distribution disk files

Maxar-Legion 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 Maxar-Legion data set by selecting the *.IMD file.

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

File name	Format	Required	Contents/details
*.TIF	GeoTIFF	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

Maxar-Legion 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	8 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	8 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
Standard (OR2A) - Pansharpened	4 x [8U] Raster channels(BGRN) 1 x [ORB] Orbit segment 1 x [BIN] Rational function model	N/A
OrthoRectified (3D) - Ortho Pansharpened	3 x [8U] Raster channels(BGRN) 1 x [ORB] Orbit segment 1 x [BIN] Rational function model	N/A

References

For more information, visit: maxar.com

https://pacgeo.com/wp-content/uploads/2023/02/worldview-legion.pdf