Direct imaging of small scatterers using reduced time dependent data

JOURNAL OF COMPUTATIONAL PHYSICS

卷:338

Article

Cakoni, Fioralba¹  Rezac, Jacob D.² 

[1] Rutgers State Univ, Dept Math, Piscataway, NJ 08854 USA

[2] Univ Delaware, Dept Math Sci, Newark, DE 19716 USA

关键词: Inverse acoustic scattering;    Time domain sampling method;    Limited-view inverse scattering problem;    MUltiple Signal Classification (MUSIC);   

DOI  :  10.1016/j.jcp.2017.02.061

来源: Elsevier

【 摘 要 】

We introduce qualitative methods for locating small objects using time dependent acoustic near field waves. These methods have reduced data collection requirements compared to typical qualitative imaging techniques. In particular, we only collect scattered field data in a small region surrounding the location from which an incident field was transmitted. The new methods are partially theoretically justified and numerical simulations demonstrate their efficacy. We show that these reduced data techniques give comparable results to methods which require full multistatic data and that these time dependent methods require less scattered field data than their time harmonic analogs. (C) 2017 Elsevier Inc. All rights reserved.

【 授权许可】

Free