TanDEM-X is an interferometric SAR (InSAR) mission ac-quiring bistatic images with two satellites. Systematic map-ping of the Earth's land masses will provide individual inter-ferometric data sets which will be mosaicked and calibrated into a global Digital Elevation Model (DEM). The concept of InSAR and DEM quality monitoring throughout the acquisi-tion and processing phase is presented in this paper.
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