Results 211 to 220 of about 1,686,769 (280)
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Reconstruction of rough-surface profiles with the Kirchhoff approximation
Journal of the Optical Society of America A, 1991An inversion algorithm, based on the Kirchhoff approximation, for the reconstruction of a rough-surface profile from measurements of the scattered field is described. It is shown that the data can be related to the surface profile through a Fourier-transform relationship by a specific choice of data and so lead to a simple fast-Fourier-transform-based ...
Richard J. Wombell, John A. DeSanto
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International Journal of Mechanical Sciences, 2022
Interfacial roughness plays an important role in nanoscale thermal transport, while this issue still lacks a theoretical description due to the difficulty in quantifying the phonon scattering at the disordered interface.
Moran Wang, Alexander Barinov
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Interfacial roughness plays an important role in nanoscale thermal transport, while this issue still lacks a theoretical description due to the difficulty in quantifying the phonon scattering at the disordered interface.
Moran Wang, Alexander Barinov
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Journal of Sound and Vibration, 2019 Rapid and accurate methods, based on the Kirchhoff approximation (KA), are developed to evaluate the scattering of shear waves by rough defects and quantify the accuracy of this approximation.
Michael J S Lowe +2 more
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A Study for Acoustic Target Strength Characteristics of Submarines Using Kirchhoff Approximation
Marine Technology Society Journal, 2017 Hyun-Wung Kwon
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Beyond the Kirchhoff approximation II electromagnetic scattering
Radio Science, 1991In a previous paper the momentum transfer expansion was introduced for scalar wave scattering. It was shown that, using this expansion, one could obtain wavelength dependent curvature corrections to the Kirchhoff approximation. In this paper we extend the momentum transfer perturbation expansion to electromagnetic waves.
E. Rodríguez
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Kirchhoff Approximation Analysis of Plane Wave Scattering by Conducting Thick Slits
IEICE Transactions on Electronics, 2019Kirchhoff approximation (KA) method has been applied for ray-mode conversion to analyze the plane wave scattering by conducting thick slits. The scattering fields can be considered as field radiations from equivalent magnetic current sources assumed by ...
Hiroshi Shirai
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Journal of the Acoustical Society of America, 2018 The Fourier series method for implementing the Rayleigh hypothesis [Rayleigh-Fourier method (RFM)] is used as a reference solution to assess the Kirchhoff approximation of the Helmholtz integral [Helmholtz-Kirchhoff approximation (HKA)] for modeling ...
H C Song, W S Hodgkiss
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IEEE Transactions on Geoscience and Remote Sensing, 2020
This article presents a new asymptotic modeling of electromagnetic (EM) wave coherent scattering from a rough multilayered medium, based on the scalar Kirchhoff-tangent plane approximation.
N. Pinel +2 more
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This article presents a new asymptotic modeling of electromagnetic (EM) wave coherent scattering from a rough multilayered medium, based on the scalar Kirchhoff-tangent plane approximation.
N. Pinel +2 more
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Kirchhoff's approximation in diffractive optics
Diffractive Optics and Micro-Optics, 2000Kirchhoff's approximation is reviewed and applied to standard problems of diffractive optics. Despite a consistent definition the range of validity varies significantly depending on the application. Kirchhoff's approximation is also compared with alternative diffraction models.
Markus Testorf, Michael Fiddy
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