An application of a variational principle for scattering by random rough surfaces

Ernest P. Gray, Robert W. Hart, Richard A. Farrell

Research output: Contribution to journalArticle

Abstract

This paper constitutes a first step in the application of a recently developed variational principle to the study of scattering from random rough surfaces. The variational principle has been applied here to assess and extend the range of validity of the perturbation approximation for the scattering of a horizontally polarized electromagnetic wave by a random configuration of non‐overlapping parallel hemicylindrical bosses of equal radii protruding from a conducting plane. The results for this model of a rough surface suggest that, besides extending the range of validity of the perturbation approximation, the variational approach also provides an improved first‐order correction at the long‐wavelength limit in the expansion of the reflection coefficient in powers of the scatterer concentration.

Original languageEnglish (US)
Pages (from-to)333-343
Number of pages11
JournalRadio Science
Volume13
Issue number2
DOIs
StatePublished - 1978
Externally publishedYes

Fingerprint

variational principles
scattering
perturbation
Scattering
electromagnetic wave
Electromagnetic waves
approximation
electromagnetic radiation
reflectance
conduction
radii
expansion
configurations

ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)
  • Electrical and Electronic Engineering
  • Condensed Matter Physics
  • Computer Networks and Communications
  • Atmospheric Science
  • Computers in Earth Sciences
  • Geochemistry and Petrology
  • Geophysics
  • Instrumentation

Cite this

An application of a variational principle for scattering by random rough surfaces. / Gray, Ernest P.; Hart, Robert W.; Farrell, Richard A.

In: Radio Science, Vol. 13, No. 2, 1978, p. 333-343.

Research output: Contribution to journalArticle

Gray, Ernest P. ; Hart, Robert W. ; Farrell, Richard A. / An application of a variational principle for scattering by random rough surfaces. In: Radio Science. 1978 ; Vol. 13, No. 2. pp. 333-343.
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