Accession Number : ADP006116

Title :   Regions of Validity for Some Rough Surface Scattering Models,

Corporate Author : ROME AIR DEVELOPMENT CENTER GRIFFISS AFB NY

Personal Author(s) : Papa, Robert J. ; Lennon, John F.

Report Date : MAY 1987

Pagination or Media Count : 16

Abstract : This paper examines the regions of validity that apply to the use of various models for describing rough surface scattering. The first area to be examined is how a small slope condition allows an integral representation of the physical optics (PO) cross section to be formed that does not require the high frequency geometric optics (GO) restriction. Next, for forward scattering, consider the extension of the roughness dependence of the PO scattering cross section from the case of Gaussian surface and correlation to a range of surface with different height statistics and correlation functions. This dependence is then examined for the small perturbation method (SPM) regime as well. Finally, the forward scattering PO results are extended to the case where the azimuthal angle does not equal 0 deg.

Descriptors :   *ELECTROMAGNETIC SCATTERING, *LIGHT SCATTERING, SURFACE ROUGHNESS, HIGH FREQUENCY, FORWARD SCATTERING, CORRELATION TECHNIQUES, PERTURBATION THEORY, INTEGRAL EQUATIONS, SYMPOSIA.

Subject Categories : Radiofrequency Wave Propagation
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE