A Monte Carlo study of the rough-sea-surface influence on the radar scattering from two-dimensional ships

The Generalized Forward-Backward (GFB) method was introduced in [1] for com puting the electromagnetic scattering from two-dimensional targets on a rou gh surface. The GFB method is used in this article to generate numerical da ta for a Monte Carlo simulation of the horizontally polarized radar cross s ection (RCS) of two-dimensional ship-like targets on random rough sea surfa ces. The RCS is computed as a function of the incidence angle and wind spee d for a large number of surface realizations. It is found that the mean RCS of a given target on a rough surface is generally lower than or equal to t he RCS of the same target on a flat surface, while the maximum RCS is usual ly greater than or equal to the flat-surface case. It is also observed that the variations in the RCS introduced by the rough surface become less sign ificant as the elevation angle approaches grazing.