Convective wave equation and time reversal process for source refocusing

Adar Kahana, Eli Turkel, Dan Givoli

Research output: Contribution to journalArticlepeer-review

Abstract

The convective wave equation deals with wave propagation in a moving media. We focus on the underwater acoustic wave equation where the convective element is the flow of water inside a river, along its length. The main thrust of this paper is the ill-posed "refocusing" problem. The initial condition simulates an explosion in a small compact region and the response is recorded over time at several microphones. Having only partial and noisy information we expect that small perturbations will destroy the ability to recover the complete initial data. We use the time reversal (TR) technique to determine the location of the original explosion, given limited spatial observations. We test the effectiveness of this scheme under conditions including dissipation, dispersion, etc. We use finite differences and implement absorbing boundary conditions to simulate an unbounded region.

Original languageEnglish
Article number1850016
JournalJournal of Theoretical and Computational Acoustics
Volume26
Issue number2
DOIs
StatePublished - 1 Jun 2018

Keywords

  • Convective
  • finite differences
  • inverse
  • refocusing
  • sensors
  • source
  • time reversal
  • waves

Fingerprint

Dive into the research topics of 'Convective wave equation and time reversal process for source refocusing'. Together they form a unique fingerprint.

Cite this