Multiple scatterer retracking and interferometric swath processing of CryoSat-2 data for ice sheet elevation changes

In the processing of data acquired by conventional radar altimeters, algorithms designed to compute elevation of signal backscatterers assume that the point closest to the satellite antenna is the nadir point. While this is a valid assumption over the oceans, it is often not valid in non-oceanic surfaces. Radar altimetry data acquired over ice...