Analysis on the Distribution of Random Rough Surface Scattering by Monte-Carlo Method

In this paper, On the basis of the Monte-Carlo (M-C) simulation and Kirchhoff approximation, obeying Rayleigh distribution scattering field amplitude A, and satisfying the evenly distributed scattering field phase phi, The scattering field formula, the scattering cross section (scattering coefficient) per unit area and the BRDF of the rough surface are derived for different Rayleigh distributions in different incident directions. Observe the variation trend of scattering intensity and scattering coefficient of different Rayleigh distributions. The results show that under different incident angles, there is the strongest phenomenon in mirror scattering. The results are consistent with the experimental results. It indicates that the numerical results were available and reasonable.