Study on Characteristics of Electromagnetic Wave Transmission from 2-D FBm Fractal Rough Surface of Layered Medium
二维fBm分形分层介质粗糙面电磁波透射特征研究

The electromagnetic wave transmission with plane wave incidence on the rough surface of layered medium is studied, the formulae of the transmission coefficient for different polarization is derived using the small perturbation method. A 2-D fBm fractal rough surface is presented for describing natural rough surface of layered medium, the curves of the transmission coefficient of the HH polarization with varying of the scattering angle of transmission wave are obtained by numerical implementation, the fractal characteristics, the basic characteristics, and the characteristics with varying of frequency of the incidence wave are obtained by numerical calculating. The numerical results show that the influence of the fractal dimension, the permittivity of substrate medium, the permittivity and the mean layer thickness of intermediate medium, the rms and the correlation length of the rough surface, and the incident frequency on the transmission coefficient is very complex.