Numerical simulation of bistatic scattering from fractal rough surface in the finite element method

摘要

By using the Monte Carlo method and numerical finite elementapproach, bistatic scatter- ing from the fractal and Gaussian roughsurfaces is studied. The difference between these two surfaces andtheir functional dependence on the surface parameters are discussed.Angular variation of bistatic scattering from the fractal surface isvery significant, even for fairly smooth surface, whilst scatteringfrom the Gaussian rough surface tends to the specular reflection. Theslope Of angular variation is lin- early related with the fractaldimension. If an electrically-large target is placed over the roughsurface, the fractal dimension inverted from bistatic scatteringwould be reduced. As the surfaces become very rough, scattering fromdifferent fractal and Gaussian surfaces would be not identified.