A time domain sampling method for inverse acoustic scattering problems

A time domain sampling method for inverse acoustic scattering problems
复制标题

一种求解逆声散射问题的时域采样方法

DOI:
10.1016/j.jcp.2016.03.046
复制
发表时间:
2015-10
影响因子:
4.1
通讯作者:
Liu Hongyu
Liu Hongyu
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Guo Yukun;Hoemberg Dietmar;Hu Guanghui;Li Jingzhi;Liu Hongyu

文献摘要

参考文献

被引文献

相似文献

本文研究了用瞬态声近场测量方法对未知/不可达散射体成像的逆散射问题。在分析偏移方法的基础上,针对入射脉冲点源引起的时间相关散乱数据,提出了一种高效有效的采样方案,用于成像小散射体和扩展散射体。虽然逆散射问题是已知的非线性和不适定的,但所提出的成像算法完全是直接的,只涉及测量表面上的积分计算。文中给出了理论证明,并通过数值实验验证了该方法的有效性和稳健性。特别是,所提出的静态成像泛函提高了全聚焦方法(TFM)的性能,动态成像泛函表现出类似于时间反转反演的行为,但不需要求解含时波动方程。
This work concerns the inverse scattering problems of imaging unknown/inaccessible scatterers by transient acoustic near-field measurements. Based on the analysis of the migration method, we propose efficient and effective sampling schemes for imaging small and extended scatterers from knowledge of time-dependent scattered data due to incident impulsive point sources. Though the inverse scattering problems are known to be nonlinear and ill-posed, the proposed imaging algorithms are totally “direct” involving only integral calculations on the measurement surface. Theoretical justifications are presented and numerical experiments are conducted to demonstrate the effectiveness and robustness of our methods. In particular, the proposed static imaging functionals enhance the performance of the total focusing method (TFM) and the dynamic imaging functionals show analogous behavior to the time reversal inversion but without solving time-dependent wave equations.
DOI: 10.1093/acprof:oso/9780199213535.001.0001
发表时间: 2007-12
期刊: --
影响因子: --
作者:
A. Kirsch;N. Grinberg
通讯作者: A. Kirsch;N. Grinberg
DOI: 10.1088/0266-5611/29/9/095019
发表时间: 2013-09
期刊: Inverse Problems
影响因子: 2.1
作者:
H. Alqadah;Nicolas Valdivia
通讯作者: H. Alqadah;Nicolas Valdivia
DOI: 10.1137/13093409x
发表时间: 2014-07
期刊: Multiscale Model. Simul.
影响因子: --
作者:
Jingzhi Li;Hongyu Liu;J. Zou
通讯作者: Jingzhi Li;Hongyu Liu;J. Zou
DOI: 10.1007/978-1-4757-4317-3
发表时间: 1967
期刊: --
影响因子: --
作者:
O. A. Ladyzhenskai︠a︡
通讯作者: O. A. Ladyzhenskai︠a︡
DOI: 10.1088/0266-5611/29/3/035004
发表时间: 2012-10
期刊: Inverse Problems
影响因子: 2.1
作者:
L. Oksanen
通讯作者: L. Oksanen