Statistical properties of the polarization ratio for radar returns with deterministic polarized targets in clutter

In this study, the radar returns from a target with deterministic polarization in clutter environments illuminated by fully polarized waves are taken into account. Statistical properties of the polarization ratio for radar returns are obtained on the assumption of complex Gaussian distributions with non-zero means. Probability density functions (PDFs) of the amplitude ratio and the phase difference are expressed in closed forms. Comparisons of statistical properties from simulated data to the theoretical PDFs derived on the basis of non-zero means, as well as the traditional ones. The better fitted results are presented to verify the advantage of the newly proposed polarization ratio models.