Physical parameter extraction over urban areas using L-band POLSAR data and interferometric baseline diversity

Estimating the number of backscattering sources is an important issue in analyzing multibaseline interferometric SAR data. This paper extends model order selection algorithms to process polarimetric multibaseline InSAR observations. These methods are applied to urban environments using fully polarimetiric dual-baseline InSAR data of Dresden city acquired by DLR´s E-SAR system. Experimental results for single polarization and polarimetric set-ups are presented and discussed.