The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
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Articles | Volume XXXIX-B7
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XXXIX-B7, 45–50, 2012
https://doi.org/10.5194/isprsarchives-XXXIX-B7-45-2012
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XXXIX-B7, 45–50, 2012
https://doi.org/10.5194/isprsarchives-XXXIX-B7-45-2012

  31 Jul 2012

31 Jul 2012

THE GLOBAL TANDEM-X DEM: PRODUCTION STATUS AND FIRST VALIDATION RESULTS

M. Huber, A. Gruber, A. Wendleder, B. Wessel, A. Roth, and A. Schmitt M. Huber et al.
  • DLR, German Aerospace Center, 82234 Wessling Oberpfaffenhofen, Germany

Keywords: TanDEM-X, DEM, InSAR, Global, Calibration, Mosaic, Block Adjustment, Validation

Abstract. The TanDEM-X mission will derive a global digital elevation model (DEM) with satellite SAR interferometry. Two radar satellites (TerraSAR-X and TanDEM-X) will map the Earth in a resolution and accuracy with an absolute height error of 10m and a relative height error of 2m for 90% of the data. In order to fulfill the height requirements in general two global coverages are acquired and processed. Besides the final TanDEM-X DEM, an intermediate DEM with reduced accuracy is produced after the first coverage is completed. The last step in the whole workflow for generating the TanDEM-X DEM is the calibration of remaining systematic height errors and the merge of single acquisitions to 1°x1° DEM tiles. In this paper the current status of generating the intermediate DEM and first validation results based on GPS tracks, laser scanning DEMs, SRTM data and ICESat points are shown for different test sites.