A direct approach to imaging in a waveguide with perturbed geometry

JOURNAL OF COMPUTATIONAL PHYSICS

卷:392

Article

Borcea, Liliana¹  Cakoni, Fioralba²  Meng, Shixu¹ 

[1] Univ Michigan, Dept Math, Ann Arbor, MI 48109 USA

[2] Rutgers State Univ, Dept Math, New Brunswick, NJ 08901 USA

关键词: Linear sampling method;    Waveguide;    Inverse scattering;   

DOI  :  10.1016/j.jcp.2019.04.072

来源: Elsevier

【 摘 要 】

We introduce a direct, linear sampling approach to imaging in an acoustic waveguide with sound hard walls. The waveguide terminates at one end and has unknown geometry due to compactly supported wall deformations. The goal of imaging is to determine these deformations and to identify localized scatterers in the waveguide, using a remote array of sensors that emits time harmonic probing waves and records the echoes. We present a theoretical analysis of the imaging approach and illustrate its performance with numerical simulations. (C) 2019 Elsevier Inc. All rights reserved.

【 授权许可】

Free