Electromagnetic scattering from two-dimensional FBM rough surface using Kirhhoff approximation

A two-dimensional fractional Brown motion (FBM) fractal model is presented, which is suitable for describing the natural rough surface. The Kirhhoff a pproximation is considered, and the expressions of electromagnetic scatteri ng field and the normalized radar cross section from this fractal surface a re obtained. Numerical results of the normalized radar cross section as a f unction of fractal dimension, characteristic length and incidence frequency are given. Our FBM model is also compared with classical models of Gaussia n and exponential correlations.