Extraction of Information from the Time-Frequency POL-inSAR Response of Anisotropic Scatterers

Abstract—This paper proposes to analyze the anisotropic SAR response of particular scatterers using a Time-Frequency (T-F) approach. A polarimetric statistical technique is introduced to estimate scattering behavior stability over the T-F domain. A matrix likelihood ratio and a multiple coherence operator are proposed to classify each pixel according to the stationary aspect and coherence of its PolSAR response. A T-F analysis over built-up areas is led and shows that such objects can be better characterized by taking into account their POLSAR and POL-inSAR response in the T-F domain