Quality assessment of first TanDEM-X DEMs for different terrain types

Conference: EUSAR 2012 - 9th European Conference on Synthetic Aperture Radar
04/23/2012 - 04/26/2012 at Nuremberg, Germany

Proceedings: EUSAR 2012

Pages: 4Language: englishTyp: PDF

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Gruber, Astrid; Wessel, Birgit; Huber, Martin; Breunig, Markus; Roth, Achim (German Remote Sensing Center (DFD), German Aerospace Center (DLR), Oberpfaffenhofen, 82234 Wessling, Germany)
Wagenbrenner, Susanne (Company for Remote Sensing and Environmental Research (SLU), Kohlsteiner Strasse 5, 81243 Munich, Germany)

The main product of the TanDEM-X mission is a global interferometric digital elevation model (DEM) that is finally calibrated due to residual systematic offsets and tilts. For the final DEM product single acquisitions (socalled data takes) are calibrated and merged to tiles of a size of 1degx1deg. Finally the globe will mostly be covered with two acquisitions. The quality of the calibration of the data takes and also the accuracy of the final DEM highly depends on the terrain and the vegetation. Therefore, three different test areas where we have to deal with good, medium and difficult terrain conditions will be presented here.