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Rigorous and approximate methods for modeling wave scattering from a locally perturbed perfectly conducting surface

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Abstract

Rigorous and approximate methods are considered for solving the problem of harmonic plane wave scattering from a plane surface arbitrarily perturbed along one dimension on a finite interval. This problem is treated using the Fredholm integral equations of the second kind and the Kirchhoff and Rayleigh approximations. The estimates of the computational efficiency of the integral equation method and the Rayleigh approximation are compared by calculating fields scattered from random rough surfaces in the resonance region (i.e., when the roughness height is comparable to or smaller than the incident wavelength) for an arbitrary incidence of a plane wave. Scattering patterns calculated using the integral equations and the Kirchhoff approximation are discussed in the case of large-scale random rough surface scattering. Particular attention is paid to scattering at near-grazing incidence.

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Authors and Affiliations

  1. Steklov Institute of Mathematics, St. Petersburg Division, Russian Academy of Sciences, St. Petersburg, 191011, Russia

    V. V. Zalipaev

  2. St. Petersburg State Institute of Precise Mechanics and Optics (Technical University), St. Petersburg, 197101, Russia

    A. V. Kostin

Authors
  1. V. V. Zalipaev
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  2. A. V. Kostin
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Translated from Zhurnal Tekhnichesko\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) Fiziki, Vol. 70, No. 1, 2000, pp. 3–9.

Original Russian Text Copyright © 2000 by Zalipaev, Kostin.

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Zalipaev, V.V., Kostin, A.V. Rigorous and approximate methods for modeling wave scattering from a locally perturbed perfectly conducting surface. Tech. Phys. 45, 1–7 (2000). https://doi.org/10.1134/1.1259559

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  • DOI: https://doi.org/10.1134/1.1259559

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