Electromagnetic Scattering Patterns from Sinusoidal Surfaces.
Abstract
In this paper we present an analysis and calculation of scattering patterns from sinusoidal surfaces. An exact space-harmonic representation is used for the field on the surface and, as a result, the calculation includes the effects of shadowing, diffraction, and multiple scattering. An asymptotic evaluation has been employed to obtain an exact expression for the scattering pattern as a product of the space-harmonic scattering coefficients times the corresponding pattern functions. The formula obtained has been simplified for illuminated areas that are many wavelengths long and plotted for a variety of surface parameters. The present method for scattering calculations can be considered to be complementary to methods using physical-optics and point-matching techniques. In addition to presenting the scattering-pattern calculations, the report includes the computation of the exact Bragg backscattering amplitudes and compares them to their Rayleigh approximations. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 10, 1979
- Accession Number
- ADA068369
Entities
People
- Arthur K. Jordan
- Roger H. Lang
Organizations
- United States Naval Research Laboratory