TerraSAR-X and TanDEM-X (0.25m)

Product Description

TerraSAR-X and TanDEM-X (0.25m) – TSX and TDX

TerraSAR-X is a German synthetic aperture radar imaging satellite mission for scientific and commercial applications. It has a 1 metre resolution class radar satellite, which delivers Earth observation data for scientific, institutional and commercial users.

The science objectives are to make multi-mode and high-resolution X-band data available for a wide spectrum of scientific applications in such fields as: hydrology, geology, climatology, oceanography, environmental and disaster monitoring, and cartography (DEM generation) making use of interferometry and stereometry. The science potential of the mission is given by:

• The high geometric and radiometric resolution (experimental 300 MHz Mode for very high range resolution)
• The single, dual and quad polarization mode capability
• The capability of multi-temporal imaging
• The capability of repeat-pass interferometry
• The capability of ATI (Along-Track Interferometry)

Both TerraSAR-X and TanDEM-X (0.25m) carry X-band synthetic aperture radar sensors capturing imagery in a number of modes from ScanSAR (270km swath and 40m nominal spatial resolution) to Spotlight (4km swath and 0.25m spatial resolution) with most modes also available as either single or dual-polarisation. Operating in a twin satellite formation about 500m apart, TerraSAR-X and TanDEM-X are collecting interferometric imagery for the creation of a quality global DEM.

Imagery can be programmed on demand. TerraSAR-X was launched in June 2007 and was joined by TanDEM-X in June 2010.

There is a wide variety of applications for TerraSAR-X and TanDEM-X in geology, climatology, oceanography, environmental and disaster monitoring, and cartography, especially DEM generation.

The X-Band SAR delivers radar imagery in following modes:

• Image Mode or Spotlight (up to 1 m resolution)
• StripMap (up to 3 m resolution)
• ScanSAR (up to 16 m resolution)

 

The Airbus/DLR X-Band constellation currently consists of TerraSAR-X, TanDEM-X and PAZ (in commissioning). TerraSAR-X and TanDEM-X have an orbit repeat cycle of 11 days. The spatial resolution of TerraSAR-X modes is described in the table below.

Sensor	Mode	Resolution	Swath	Polarisation
Airbus/DLR TerraSAR-X	Staring SpotLight	0.25 m	4 x 3.7 km	Single: HH or VV
Airbus/DLR TerraSAR-X	High Res SpotLight	1 m	10 x 5 km	Single: HH or VV Dual: HH + VV
Airbus/DLR TerraSAR-X	SpotLight	2 m	10 x 10 km	Single: HH or VV Dual: HH + VV
Airbus/DLR TerraSAR-X	StripMap	3 m	30 x 50 km	Single: HH or VV Dual: HH + VV or HH + HV or or VV + VH
Airbus/DLR TerraSAR-X	ScanSAR	18.5 m	100 x 150 km	Single: HH or VV
Airbus/DLR TerraSAR-X	Wide ScanSAR	40 m	270 x 200 km	Single: HH or VV or HV or VH