GEOSAT-2 (Deimos-2)

Long name	GeoSat-2 (Deimos-2)
Short name	GS2 (DMS2)
Key file name (use to open data set)	*.dim
Supported file extensions	.dim, .tif, .jpg, .txt

Sensor	HiRAIS / EOS-D
Platform	GeoSat-2 (Deimos-2)
Data distributor	GEOSAT (Deimos Imaging)
Sections	Data product name and description Distribution disk files Returned data References

Data product name and description

GEOSAT-2 (former Deimos-2) is a high resolution optical satellite, built for GEOSAT of Spain, which launched 19 June 2014 and remains operational. GEOSAT-2 is the second satellite of the GEOSAT Earth Observation system, following the GEOSAT 1. It operates from a Sun-synchronous orbit at a mean altitude of 620 km, with a local time of ascending node (LTAN) of 10h30, which allows an average revisit time of two days worldwide (one day at mid-latitudes).

Data product	Description	Version
PAN 1 m	Band 1 Panchromatic (560 - 900 nm)	N/A
MS 4 m	Band 1 NIR (770 - 892 nm) Band 2 Red (640 - 697 nm) Band 3 Green (532 - 599 nm) Band 4 Blue (466 - 525 nm)	N/A
Pan-sharpened PSH PS4 PS3	Band NRGB Band NRGB Band RGB	Only for GeoSat-2
Bundle PMS	Pan + Multispectral	Only for GeoSat-2

GeoSat-2 has four processing levels, 3 of them are supported as described in the following table.

Processing level	Description/notes
Level 1B	A calibrated and radiometrically corrected product, but not resampled. The geometric information is contained in a rational polynomial.
Level 1C	A calibrated and radiometrically corrected product, manually orthorectified and resampled to a map grid up to 75cm resolution. The geometric information is contained in the GeoTIFF tags.
Level 1D	A calibrated and radiometrically corrected product, manually orthorectified and resampled to a map grid up to 40cm resolution. The geometric information is contained in the GeoTIFF tags.

GEOSAT 2 has four imaging acquisition modes:

Single Strip Imaging: 12 km wide and up to 1,400 km long image. The satellite has a ±45º across-track tilting capability (being ±30º the nominal range).
Multi-pointing Imaging: GEOSAT 2 is capable ofperforming multi-pointing imaging, switching from one target to another with minimum idle time..
Single Pass Stereo Imaging: Two acquisitions of the same area in the same orbit, with different pitch angles. Images are 12-km wide and up to 200 km long. The viewing angles are different for the two images, in order to allow the generation of 3D models.
Tessellation Imaging: Two acquisitions of the same area in the same orbit, with different pitch and roll angles. Images are 24-km wide and up to 200 km long (composed from the acquisition of two adjacent strips, 12-km wide each, and captured with a lag of a few seconds).

Distribution disk files

File name	File type	Required	Contents	Details
*.tif	GeoTIFF	Yes	Image data	Image files
*.dim	Text	Yes	Metadata	Image metadata
*.txt	Text	Yes	RPC text file	N/A
*.jpg	JPEG	No	Browse image	N/A

Returned data

The data structure, after it is opened by GDB, is as described in the following table.

Data product	Data returned	Details/notes
1B (Multispectral) 1C (Multispectral) 1D (Multispectral)	4 x [16U] raster channels 1 x [ORB] orbit segment 1 x [BIN] Rational function model 1 x [TEX] Main product annotation	N/A
1B (Panchromatic) 1C (Panchromatic) 1D (Panchromatic)	1 x [16U] raster channel 1 x [ORB] orbit segment 1 x [BIN] Rational function model 1 x [TEX] Main product annotation	N/A
1B (Pan-sharpened PSH/PS4) 1C (Pan-sharpened PSH/PS4) 1D (Pan-sharpened PSH/PS4)	4 x [16U] raster channels 1 x [ORB] orbit segment 1 x [TEX] Main product annotation	Orbit segemnt is only for non-ORTHO product
1B (Pan-sharpened PS3) 1C (Pan-sharpened PS3) 1D (Pan-sharpened PS3)	3 x [16U] raster channels 1 x [ORB] orbit segment 1 x [TEX] Main product annotation	Orbit segemnt is only for non-ORTHO product
1B (Bundle Pan+MS) 1C (Bundle Pan+MS) 1D (Bundle Pan+MS)	1 x [16U] raster channels(Pan) / 4 x [16U] raster channels(MS) 1 x [BIN] Rational function model 1 x [ORB] orbit segment 1 x [TEX] Main product annotation	N/A

References

For more information, go to: geosat.space