A time domain sampling method for inverse acoustic scattering problems

Yukun Guo, Dietmar Hömberg, Guanghui Hu, Jingzhi Li*, Hongyu LIU

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)647-660
Number of pages14
JournalJournal of Computational Physics
Volume314
DOIs
Publication statusPublished - 1 Jun 2016

Scopus Subject Areas

  • Numerical Analysis
  • Modelling and Simulation
  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)
  • Computer Science Applications
  • Computational Mathematics
  • Applied Mathematics

User-Defined Keywords

  • Dynamic measurements
  • Inverse acoustic scattering
  • Kirchhoff migration
  • Sampling method
  • Time domain

Fingerprint

Dive into the research topics of 'A time domain sampling method for inverse acoustic scattering problems'. Together they form a unique fingerprint.

Cite this