Scatter cross sections for two-dimensional random rough surfaces-full wave analysis

Abstract

The full wave solutions for the fields diffusely scattered from two-dimensional random rough surfaces are used to evaluate the scatter cross sections. Unlike the original full wave solution, E. Bahar et al. (1979), this full wave solution accounts for rough surface height and slope correlations and can, therefore, be used for a wide range of surface roughness scales, E. Bahar et al. (1994). The computation time is relatively short compared to the numerical results based on Monte Carlo simulations (even for one-dimensional random rough surfaces). The full wave scatter cross sections for the two-dimensional random rough surfaces are shown to reduce to the small perturbation and physical optics solutions in their appropriate regions of validity. It is also shown that there is good agreement between the full wave results and experimental data or numerical results based on Monte Carlo simulations.