Backscattering Enhancement and Clustering Effects of Randomly DistributedDielectric Cylinders Overlying a Dielectric Half Space Based on Monte-Carlo Simulations

摘要

Backscattering enhancement can exist in volume surface interaction where a doublebounce can arise from one volume scattering and one surface scattering. An important quantity to be determined in backscattering enhancement is the angular width. This paper studies backscattering enhancement of volume surface interaction by performing Monte Carlo simulations of scattering by vertical dielectric cylinders overlying a dielectric half space using the Fold Lax multiple scattering equations. The results indicate that the angular width of backscattering enhancement for a scattering layer with a small optical thickness is of the order of the wavelength divided by the layer thickness giving an appreciable angular width of the order of 10 to 3O degrees that can be important for remote sensing applications. The effects of clustering of scatterers leading to collective scattering and absorption effects are also studied.