TANDEM-X MISSION: OVERVIEW, STATUS AND OUTLOOK

Steinbrecher, U.; Zink, M.; Moreira, A.; Bachmann, M.; Böer, J.; Schulze, D.; Krieger, G.

TanDEM-X (TerraSAR-X add-on for Digital Elevation Measurement) opens a new era in spaceborne radar remote sensing [1]–[3], [9], [12]. Realized in the framework of a public-private partnership between the German Aerospace Center (DLR) and EADS Astrium GmbH, a single-pass SAR interferometer with adjustable baselines in across- and in along-track directions was formed by adding a second (TDX), almost identical spacecraft to TerraSAR-X (TSX) and flying the two satellites in a closely controlled formation on average orbit height of 514 km. This allows the acquisition of highly accurate cross-track and along-track interferograms without the inherent accuracy limitations imposed by repeat-pass interferometry due to temporal decorrelation and atmospheric disturbances. With typical across-track baselines of 150 to 500 m a global Digital Elevation Model (DEM) with 2 m relative height accuracy at a 12 m posting is being generated.

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Steinbrecher, U. / Zink, M. / Moreira, A. / et al: TANDEM-X MISSION: OVERVIEW, STATUS AND OUTLOOK. 2013. Copernicus Publications.

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