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

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