PO/MEC-based bistatic scattering model for complex objects over a sea surface

In this paper, a model based on asymptotic methods is proposed in order to compute the bistatic scattered field from a complex maritime scene. The basic idea is to combine a ray tracing-based algorithm with the physical optics technique and the method of equivalents edge currents. The sea surface is generated by using the Elfouhaily directional wave spectrum. Both the target and the sea surface are meshed with triangular patches in order to compute the scattered field. Comparisons with a method of moments -based approach are provided to validate the model through simple configurations. Then more complex scenes are investigated for different sea states.