Accession Number : AD0741705

Title :   Emission and Reflection from Anisotropic Random Rough Surfaces.

Descriptive Note : Technical rept.,

Corporate Author : TRW SYSTEMS GROUP REDONDO BEACH CALIF

Personal Author(s) : Lynch,Philip J. ; Wagner,Richard J.

Report Date : MAR 1972

Pagination or Media Count : 68

Abstract : A geometrical-optics theory of emission and scattering from anisotropic random rough surfaces is developed. A complete ray treatment is provided in the sense that multiple-scatter and bistatic shadowing effects are included in a consistent manner for a general two-dimensionally rough surface. It is also shown that, in the context of this theory, both upper and lower bounds exist to the effects of surface roughness on the emissivity. A numerical calculation of the emissivity for a perfect conductor provides a check on the theory against a known result, and the scattering theory is shown to conserve energy to a relatively high degree of approximation when double-scatter effects are included. Predictions of the emission theory for the thermal microwave emission from the sea surface are compared with the results of earlier theories. (Author)

Descriptors :   (*ELECTROMAGNETIC WAVE REFLECTIONS, OCEAN WAVES), SURFACE ROUGHNESS, EMISSIVITY, REFLECTION, SCATTERING, WIND, TEMPERATURE, MATHEMATICAL MODELS, THERMAL RADIATION, MICROWAVES

Subject Categories : Physical and Dynamic Oceanography
      Radiofrequency Wave Propagation

Distribution Statement : APPROVED FOR PUBLIC RELEASE