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TerraSAR-X
The German radar satellite TerraSAR-X was launched in June 2007 from the Russian space center at Baikonur. It carries as a payload an active radar sensor which can be operated in several different modes to obtain recordings of various strip widths, resolutions and polarizations. The goal of the mission is to provide high-quality SAR (Synthetic Aperture Radar) X-band data for research and development, science and commercial applications. With its active antenna it can transmit measurements independently of weather, cloud cover and illumination conditions. The X-band uses microwaves of 3 cm wavelength (9.65 GHz frequency) and makes it possible to image the surface with high spatial resolution down to the submeter range.
Table: TerraSAR-X Mission Parameters
Dimensions
4.88 m (length) × 2.4 m (diameter)
Mass
1.23 t
Payload
400 kg
Number of instruments
1
Launcher
Dnepr-1
Launch date
June 15, 2007
Operational lifetime
5 years
Table: TerraSAR-X Orbit Parameters
Smi-major axis
6892 km
Orbit altitude (mean)
514 km
Inclination angle
97.44°
Orbital period
95 min
Orbit
polar, sun-synchronous
Overflight time
6 am
Orbits per day
15.2
Revisit
11 days
... see link for more about TerraSAR-X
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