A Physical Optics Approach to the Electromagnetic Field Scattered by Simplified Ship-Sea Models

摘要

A technique is presented to calculate the backscattered field from a simplified ship-sea model with the sea represented by a one-dimensional composite surface, and the ship by a flat plate. The physical optics approximation was used to obtain an expression for the received voltage as a single integral over the profile of the surface. Four principle scattering mechanisms of the model were examined independently to show their effect on the radar return. A composite signature was then calculated for several mode geometries. The calculated signatures were compared with measured signatures and good agreement was obtained. In all signatures the ship model return could be distinguished from the return due to the other scattering mechanisms. (Author)