Rain effect on polarimetric SAR observation

The purpose of this paper is to consider the radio wave propagation of Polarimetric SAR in rain and to verify the influence of rain quantitatively. We assume the Polarimetric SAR observation model in non-spherical rain drop environments and evaluate the influence of rain at 5.405, 9.65 and 13.9GHz by calculating the rain distortion matrix with parameters of rainfall rate and the rain drop canting angle. The results show that the rain attenuation, the attenuation difference between horizontal and vertical polarization, and the cross-polarization factor increase as the frequency and rainfall rate increase, and they depend on the rain drop canting angle and the incident angle.