Physical optics-based method to compute the radar signature of complex objects over a sea surface

In this paper, a model based on asymptotic methods is proposed in order to compute the scattered field from a complex maritime scene. The basic idea is to combine the geometrical optics and the physical optics technique. The sea surface is generated by using the Elfouhaily directional wave spectrum to obtain a realistic scene. Both the target and the sea surface are meshed with triangular patches in order to compute the scattered field. Simulated results are presented to validate this model through a simple configuration by comparisons with the method of moment. Then more complex scenes for different sea states and different kind of targets (PEC or inhomogeneous) are investigated.