TanDEM-X (TerraSAR-X add-on for Digital Elevation Measurement), launched on June 21, 2010, has a mission objective of generating a high quality Global Digital Elevation Model, also known as WorldDEM. Using Synthetic Aperture Radar (SAR), TanDEM-X has been used to determine the 12x12m surface elevation of the earth’s surface to a vertical accuracy of less than 2m.
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Parameter TANDEM-X
Orbit Altitude 514km
SAR Band X-band at 9.65 GHz
SAR Modes StripMap (GSD: 3m), ScanSAR (GSD: 1m), SpotLight (GSD: 16m)
Swath Width 30km
Ground Sampling Distance (GSD) Horizontal: 12m. Vertical: 2m
Launch/Life Expectancy 2010-2015
Revisit Time 11 day
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