[1] Universitat Politècnica de Catalunya (UPC), IEEC-UPC, Department of Signal Theory and Communications, CommSensLab - UPC, Barcelona,08034, Spain
[2] Universitat de València (UV), Image Processing Laboratory, València,46010, Spain
[3] German Aerospace Center (DLR), Microwave and Radar Institute, Weßling,82234, Germany
[4] University of Augsburg (UniA), Institute of Geography, Augsburg,86159, Germany
[5] Spanish National Research Council (ICM-CSIC), Institute of Marine Sciences, Barcelona,08003, Spain
[6] Michigan State University, Department of Biosystems and Agricultural Engineering, The Department of Civil and Environmental Engineering, East Lansing,MI,48824, United States
[7] Massachusetts Institute of Technology, Department of Civil and Environmental Engineering, Cambridge,MA,02139, United States