On The Geometrical Dependency of the Polarimetric Bistatic SAR Observation

Bistatic synthetic aperture radar (BiSAR) offers flexible imaging configurations to form SAR images at various sensing geometries. However, polarimetric observations with BiSAR are also subject to greater geometrical dependency compared to those with monostatic SAR. The polarimetric analysis practical to retrieve geophysical target parameters is currently lacking on the BiSAR imagery. In this paper, we investigate its dependence on the bistatic geometry using both isotropic and anisotropic targets. It shows that for general targets the bistatic geometry convolves with target shape, orientation and polarization angles in all polarimetric parameters.