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 polarization parameters (invariants) of the scattering matrix (SM). The main idea of the authors´ approach consists in determination of all SM´s polarization invariants statistics with the use of results of the matrix elements quadratures measurements. The Gaussian law of the quadratures´ 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 advisability while constructing polarization models of distributed radar objects