ELECTROMAGNETIC SCATTERING FROM TWO-DIMENSIONAL FBM ROUGH SURFACE USING KIRHHOFF APPROXIMATION
二维分数布朗运动(FBM)随机粗糙面电磁散射的基尔霍夫近似

A two\|dimensional fractional Brown motion (FBM) fractal model is presented, which is suitable for describing the natural rough surface. The Kirhhoff approximation is considered, and the expressions of electromagnetic scattering field and the normalized radar cross section from this fractal surface are obtained. Numerical results of the normalized radar cross section as a function of fractal dimension, characteristic length and incidence frequency are given. Our FBM model is also compared with classical models of Gaussian and exponential correlations.