Generation of high precision DEMs of the Wadden Sea with airborne interferometric SAR (original) (raw)

This paper describes how high-precision DEMs are obtained over the Wadden Sea using the AeS-1 airborne interferometric radar. The Wadden Sea is an intertidal zone along the coast which has height variations less than 5 m over 30 km and is free of vegetation. The resulting DEM has a grid spacing of 2.5 m and an absolute height accuracy of 5 cm rms, as verified by theodolite measurements. The paper describes the radar system, the processing techniques, the test area, the results, and the verification procedure.