The Effects of Finite Scattering Area on the Bistatic Normalized Cross Section for a Two-Dimensional Rough Surface
Abstract
In this report, cell size effects on the bistatic normalized scattering cross section are studied for two-dimensional rough surfaces as a function of signal wavelength and surface parameters. In previous studies the finite cell size effects were analyzed for one-dimensional surfaces. The introduction of the two-dimensional roughness produces additional features since the bistatic scattering now extends to out-of-plane angles. This allows the signal to undergo depolarization as it is scattered from the surface. Copolarized and cross polarized scattering cross section patterns are presented as a function of azimuthal angle for various cell sizes. The depolarization introduces complicated minima structure in the copolarized results. Two limiting case comparisons are examined. As the azimuthal extent of the cell is decreased, the limiting results approach those for the one-dimensional rough surface. Finally, as the cell size is increased, the two-dimensional scattering patterns take on the form of the infinite scattering cell solution for a two-dimensional rough surface.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1992
- Accession Number
- ADA274653
Entities
People
- Lisa M. Mockapetris
Organizations
- Rome Laboratory