Abstract
In this paper, a solution for electromagnetic (EM) scattering over a two-dimensional random rough surface with large roughness height and different contrast based on the generalized functions approach is proposed. By assuming pulsed dipole antenna and a two-dimensional Gaussian surface distribution with different root mean square heights and correlation lengths, the scattered E-field and the radar cross-section are calculated for the Neumann boundary conditions. A numerical evaluation of the solution using the method of moments (MoM) indicates that the proposed solution is better than the small perturbation method (SPM) and Kirchhoff approximation (KA) for different roughness heights and contrast media.
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