Polarization model of distributed radar object

At present, the main approach in constructing polarization models of time-varying distributed objects is connected with a priori suggestions on probability density functions (PDF) of the polarization parameters (invariants) of the scattering matrix (SM). The main idea of the authors´ approach consists in the determination of all SM polarization invariant statistics with the use of the results of matrix element quadrature measurements. The Gaussian law of the quadrature probability densities is assumed. In the paper, analytical expressions for 6 invariants of the monostatic scattering matrix are given. The available results confirm the suggested approach for constructing polarization models of distributed radar objects