Investigation on backscattering from 1D Weierstrass rough surface of layered medium

The electromagnetic scattering from the 1D Weierstrass rough surface of three-layered medium is studied, the formulae of the scattering coefficient for different polarization is derived using the small perturbation method. The influence of the fractal dimension, the numbers of tons , the fundamental spatial frequency ,the root mean square of rough surface, the permittivity of substrate medium, the permittivity and the mean layer thickness of intermediate medium and the frequency of the incident wave on the backscattering coefficient of HH polarization are obtained and discussed with numerical implementation.