Bistatic Scattering Cross Sections of a Composite Rough Surface
Rept. for Jan 91-Dec 92,
ROME LAB HANSCOM AFB MA
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The notion of shadowing is important in the analysis of scattering from rough surfaces using the Kirchhoff method. A key role is played here by the visibility function, which acts as a correction to the usual scattering cross section. The surface under consideration is a normally distributed composite rough surface. Analytical results are provided for the bistatic scattering cross sections. Included herein is a derivation of the visibility function. Some properties of the visibility function are highlighted in a discussion. An important feature of this work is that our expressions for scattering cross sections, in contrast to those of Sancer 1969, are free from discontinuities and hence physically more appropriate. Bistatics, Shadowing, EM Scattering, Rough surfaces.