Mueller matrix associated with diffuse scattering from two-dimensional random rough surfaces-full wave analysis

In earlier work, it was shown that there is good agreement between the full wave results and experimental data or numerical results based on Monte Carlo simulations for one dimensionally random rough surfaces [Bahar and Lee 1994, 1995]. In this work, the full wave solutions for the diffusely scattered fields from two-dimensional random rough surfaces [Bahar and Lee, 1994] are used to evaluate elements of the 4×4 Mueller matrix. The modified Mueller matrix elements are related to the like and cross polarized radar cross sections as well as to the relative phase of the vertically and horizontally polarized waves. The 4×4 Mueller matrix elements completely characterize electromagnetic scattering from targets (rough surfaces, in this case). The full wave solution presented here can be applied to surfaces with a wide range of roughness scales. Computation time for the full wave Mueller matrix elements is significantly less than the numerical results based on the Monte Carlo simulations even for one-dimensional random rough surfaces