Polarimetric bistatic radar scattering behavior of the ocean surface

this paper points out the frequency dependence on the polarimetric radar scattering behavior of the ocean surface in the frequency range 1-18 GHz (Lto Ku-band). We treat this problem with a unifying scattering model named Small Slope Approximation (SSA) to evaluate the Normalized Radar Cross Section (NRCS). The calculations were made by assuming the surface-height spectrum of Elfouhaily et al for fully developed seas. In backscattering case, the frequency decreases causes an increasing in NRCS results. Yet, in the particular bistatic configuration (scattering along the specular direction), the opposite behavior takes place. The variations of the scattering azimuth relative to wind vector have no influence on the NRCS results along the specular direction, while in backscattering configuration it is not the case. Results were analyzed in monostatic case as well as in bistatic case for different sea states and polarization ones.