Assessments of DSMs from high resolution TanDEM-X imagery with aerial photogrammetric results

High resolution and accurate digital elevation models (DEM) and digital surface models (DSM) become increasingly important in environmental, resources and urban applications. The SAR interferometry has shown to be a very useful technique for generation of DSM and Earth surface change monitoring. With the launch of the TanDEM-X satellite, for the first time single pass interferometrie X-band radar data without temporal decorrelation become available from a spaceborne system. We evaluated the high resolution TanDEM-X data and their DSM results against the SRTM DSM, the Perth´s urban monitor products from aerial photography and the DSM from the stereo mapping satellite ZY-3.