Title: Study of acoustic scattering from rough surface by the small-slope approximation theory
Abstract: Acoustic scattering from the rough surface by the small-slope approximation theory is studied,and the coherent reflection coefficient(that is,the specular reflection coefficient) of the rough sea surfaces which has a Gaussian spectrum is derived.The results by the small slope approximation are also compared with the perturba-tion and Kirchhoff approximation,and show that the small slope approximation is an efficient method to deal with the acoustic scattering from the rough surface.The change of the specular reflection coefficient with the rms sur-face slope,frequency and incident angle is discussed,and it is concluded that an obvious specular reflection ap-pears just when the wavelength can be matched with the wave height.This gives the theoretical basis whether the multi-path effect needs to be considered while analyzing the target scattering in shallow sea channel.
Publication Year: 2009
Publication Date: 2009-01-01
Language: en
Type: article
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