A two-way paraxial system for simulation of wave backscattering by a random medium

JOURNAL OF COMPUTATIONAL PHYSICS

卷:228

Article

Garnier, Josselin^1,2  Solna, Knut³ 

[1] Univ Paris 07, Lab Probabil & Modeles Aleatoires, F-75251 Paris 05, France

[2] Univ Paris 07, Lab Jacques Louis Lions, F-75251 Paris 05, France

[3] Univ Calif Irvine, Dept Math, Irvine, CA 92697 USA

关键词: Numerical wave propagation;    Parabolic approximation;    Random media;    Diffusion approximation;   

DOI  :  10.1016/j.jcp.2009.01.022

来源: Elsevier

【 摘 要 】

This paper presents a probabilistic analysis of an iterative two-way paraxial scheme for the simulation of wave propagation in anisotropic random media. This scheme has the computational cost of the standard one-way paraxial wave equation but has the accuracy of the full wave equation in a regime beyond the classical paraxial regime. More precisely, it accurately predicts the statistics of the reflected wave field. The accuracy depends on two parameters: the order of the iterative scheme and the ratio of the random backscattering intensity over the random forward-scattering intensity. (C) 2009 Elsevier Inc. All rights reserved.

【 授权许可】

Free