Abstract
A composite random rough surface model is presented for describing rough sea surface covered with oil films, the electromagnetic wave scattering from this sea surface is studied based on the Stratton-Chu integral equations mainly. A general expression for the radar cross section is derived taking into account a modulation of the rough surface by long surface waves, and the formulae of scattering coefficient is obtained further. The curves of the scattering coefficient of HH polarization with varying of the scattering angle are obtained by numerical implementation, the influence of the root mean square and correlation function of small scale roughness, the ratio of the root mean square and correlation function of large scale roughness, wave number of space, the amplitude of spatial fluctuation, the electromagnetic wave irradiation area, the root mean square and correlation function of large scale roughness and the frequency of the incident wave on the scattering coefficient is discussed. The numerical results show that the influence of these factors on the scattering coefficient is very complex.
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