An Innovative Technique for Postprocessing Descalloping

ScanSAR is a synthetic aperture radar (SAR) acquisition mode particularly suitable to several environmental applications due to its very large swath. This mode, once operated by virtual or real constellations, is able to remarkably reduce the revisit time, and this is of great relevance in all marine applications. Unfortunately, this particular kind of acquisition is affected by an intrinsic phenomenon, called scalloping, that hampers image interpretation, particularly in the case of data acquired over the sea. In this letter, an innovative and computationally efficient postprocessing procedure is presented in order to get rid of scalloping in ScanSAR data. Experiments accomplished over multilook ground-detected SAR COSMO-SkyMed data confirm the physical soundness of the proposed technique.