DS-EO

Long name	DSEO
Short name	DSEO
Sensor type	Optical, panchromatic (PAN) and multispectral (MS)
Platform	DSEO
Key file name (use to open dataset)	*_meta.xml
Supported file name extensions	.xml, .tif, .jpg
Sections	Data product name and description Distribution disk files Returned data for supported format References

Data product name and description

The objective of the DS-EO satellite is to carry out Earth Observation in the Equatorial belt to support the following:

a) Provision of high-resolution Electro-Optical (EO) images essential for high responsive applications such as maritime security and safety, border control, maritime security and safety, disaster management, and asset monitoring applications.

b) Provision of high-resolution EO images essential for Geographical Information Systems (GIS) applications and environmental, agriculture and urban planning applications.

Basic Imaging Modes: Spotlight, Stripmap and Area.

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_P Panchromatic (450 - 800 nm)	Panchromatic: 0.5m	18 km (at nadir)	N/A
Band_B Blue (450 - 520 nm) Band_G Green (520 - 590 nm) Band_R Red (630 - 690 nm) Band_N (770 - 890 nm)	MultiSpectral: 2.0m	18 km (at nadir)	N/A

* Resolution is always nadir position unless noted otherwise.

The DS-EO satellite provides two product types: L1R and L1G. Both processing levels contain the Panchromatic and 4 Band image files:

L1R (Level 1R)
L1G (Level 1G)

Processing level	Description	Notes
L1R (1R)	Radiometric corrected but the tiff files are not Geo-coded; the geo-coding information is available in the RPC field(s) in the associated metadata file. The L1R processing level consists of absolute radiometric coefficients, which are the digital number (DN) to at-sensor radiance conversion coefficients, and rational polynomial coefficients (RPCs).	N/A
L1G (1G)	Radiometric and Geometric corrected, via DEM, with a location accuracy within 65m. The L1G processing level consists of absolute radiometric coefficients, which are the digital number (DN) to at-sensor radiance conversion coefficients. It processed to a projected coordinate system (UTM) and orthorectified using a 30m digital elevation model (DEM). L1G does not come with RPCs.	N/A

Distribution disk files

DS-EO 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 DS-EO data set by selecting the *_meta.xml file.

When opening a DS-EO 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
*_meta.xml	Extensible Markup Language	Yes	Product metadata
*_aux.xml	Extensible Markup Language	Yes	Metadata
*.jpg	Joint Photographic Experts Group	No	Browse image/thumbnail image

Returned data for supported format

DS-EO data can be opened directly in its raw vendor format or imported into a PCIDSK (*.pix) file using the key file name (*_meta.xml). 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
Multispectral	4 x [16U] Raster channels 1 x [TEX] Main product metadata 1 x [BIN] Rational function model	N/A
Panchromatic	1 x [16U] Raster channel 1 x [TEX] Main product metadata 1 x [BIN] Rational function model	N/A

References

For more information, visit: https://nssdc.gsfc.nasa.gov/nmc/spacecraft/display.action?id=2022-072A

STEGI - DS-EO Product Guide - 2023.07.11.pdf