Analysis of Physical Optics Models for Rough Surface Scattering

摘要

Many techniques have been applied to analyze the effects of the environment (specifically rough surface scattering) on the performance of radar and communication systems. Physical Optics is one of the most frequently applied approaches. Several topics include the limitations and constraints that are inherent in the application of physical optics models, the ranges of its validity, different representations of normalized cross sections, alpha, and the parameter ranges in which those forms have to be used, and finally the effect of the different representations for alpha on the calculation of diffuse scattered power. It is shown that if the Rayleigh parameter dependence of alpha is taken into account and the surface shadowing is included, then the physical optics model for electromagnetic scattering can be applied to surfaces that represent an extensive range of roughness conditions.