A. A. Prilutsky, A. N. Detkov, D. A. Nitsak

The work is devoted questions of artificial radar cell sized objects polarimetric signatures modeling in quasi-optical diffraction area. In article the effective method in the computing relation of the artificial radar cell sized objects polarimetric signatures mathematical modeling which allows to investigate information possibilities PolSAR is considered. The analytical solution for backscattering matrix element is allowed for uniform facet current of quasi-plane surface of artificial radar cell sized objects is presented. On the basis of presented solution the estimation for «Fobos-Grunt» project lander polarimetric signatures modeling is executed with different detail of the lander model over the waves range from metric to millimetric. Thus the sphere model is used for accuracy estimation. The result proving is essentially important that the homogeneous theory of diffraction is effective enough method in problem of diffraction in quasi-optical area. Unlike strict methods of the wave problems solution, in the method is offered the number of digitization elements corresponds to number of approximating elements of a investigated object surface that allows to reduce dimension of a solved problem essentially.