On the robustness of the ICA based ICTD with respect to the spherical symmetry of the PolSAR data

The multiplicative model, expressed as a product between the square root of a scalar positive quantity (texture) and the description of an equivalent homogeneous surface (speckle), is one of the most disseminated models used to describe high-resolution Polarimetric Synthetic Aperture Radar clutter. Recently, a statistical test was proposed to verify the validity of the model. Within this context, this paper analysis, qualitatively and quantitatively, a P-band airborne dataset acquired by the Office National d'Études et de Recherches Aérospatiales (ONERA) over the French Guiana in 2009 in the frame of the European Space Agency campaign TropiSAR, carefully investigating the regions were the aforementioned does not hold.