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PHYSICAL OPTICS-BASED METHOD FOR RADAR SIGNATURE OF COMPLEX OBJECTS OVER A SEA SURFACE

In this contribution, a methodology based on asymptotic methods is proposed to compute the scattered field from a complex target over a sea surface. The sea surface is generated by using the Elfouhaily directional wave spectrum. The Radar Cross Section (RCS) computation combines the geometrical optics, the physical optics and the equivalent current method. It also takes into account multiple-bounce and shadowing effects. Both the target and the sea surface have been meshed with triangular facets in order to compute the scattered field. Simulated RCS results of objects are presented to show the validity of this model. Then, the radar signature of complex scenes (target+sea) is investigated.