Electromagnetic scattering from 1-D dielectric sea surface based on second-order small slope approximation

In this paper, electromagnetic scattering from one dimensional dielectric sea surface is investigated, for both TE and TM polarizations, employing the second-order small slope approximation (SSA-II). The second order terms of the small slope approximation method have been numerically implemented in order to obtain accurate results for a large range of slope. The sea surfaces are modeled as realizations of a Gaussian random process with the Pierson-Moskowitz spectrum, while the tapered incident wave is chosen to reduce the truncation error. The numerical results obtained by SSA-II are presented by comparison with benchmark numerical method.