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BIST ATIC SAR INTERFEROMETRY USING ENVISAT AND A GROUND BASED RECEIVER: FIRST RESULTS

Bistatic SAR systems are an emerging research field, in which context the Universitat Politecnica de Catalunya is developing a ground based bistatic system using ESA’s ENVISAT and ERS-2 as transmitters. The spatial resolution of this configuration is similar to that of their monostatic counterpart, although foreshortening effects have a lesser impact. The formulation of the interferometric phase has been generalized to the bistatic case, as well as the geometric and volumetric decorrelation factors. UPC’s RSLab has developed a dual-channel receiver prototype to perform bistatic experiments. First single-pass interferometric images corresponding to a local test-site are presented and compared to a synthetic interferogram.