Perturbation method in the problem of diffraction of an obliquely incident electromagnetic plane wave by an impedance wedge and the diffraction coefficients

Lyalinov, M. A.; Serbest, A.H.; İkiz, T.

doi:10.1109/dd.2001.988474

Cited by 2 publications

(1 citation statement)

References 2 publications

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“…The perturbation method proposed by Lyalinov et al [32] is used in this study to build the spectral functions for computing the diffraction coefficient D for the scattering by the impedance wedge at skew incidence. For almost normal incidence, the spectral function can be expressed as follows:…”

Section: Wedge Diffraction Effectmentioning

confidence: 99%

A Volume-Surface Composite Scattering Model for Nonlinear Ocean Surface With Breaking Waves and Foam Layers Under High Wind Conditions

Zhang¹,

Su²,

Wu³

2019

PIER B

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Electromagnetic scattering from the sea surface is of great significance in ocean remote sensing especially under high wind conditions. A novel volume-surface composite scattering model of nonlinear rough sea surfaces with breaking waves and foam layers under high wind conditions is presented in this study. Based on the semi-deterministic facet scattering model (SDFSM), using a ray tracing method combined with impedance equivalent edge currents (RT-IEEC) and vector radiative transfer theory (VRT), the backscattering characteristics of the sea surface with breaking waves and foam layers are investigated. The crest-and static-foam coverage was introduced to determine the breaking point and foam coverage distribution. The dependence of the backscattering coefficient of the sea surface with and without breaking waves and foam layers on the incident angle, wind speed, and the polarization are discussed in detail. The results of numerical simulations are analyzed and compared with the measured data from the relevant references which verifies the validity of our volume-surface composite scattering model. The synthetic aperture radar (SAR) image simulations of the surface with and without the breaking waves and foam layers are compared, and the combined effects of the breaking waves and whitecaps are analyzed.

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Section: Wedge Diffraction Effectmentioning

confidence: 99%