Underwater acoustic sensing using the geometric phase

Trevor D. Lata, Pierre A. Deymier, Keith Runge, Glen S. Uehara, Todd M.W. Hodges

Research output: Contribution to journalArticlepeer-review

Abstract

We present a sensing modality using the geometric phase of acoustic waves propagating in an underwater environment. We experimentally investigate the effect of scattering by a small subwavelength perturbation on a flat submerged surface. We represent the state of an acoustic field in the unperturbed and perturbed cases as multidimensional vectors. The change in geometric phase is obtained by calculating the angle between those vectors. This angle represents a rotation of the state vector of the wave due to scattering by the perturbation. We perform statistical analysis to define a signal-to-noise ratio to quantify the sensitivity of the geometric phase measurement and compare it to magnitude based measurements. This geometric phase sensing modality is shown to have higher sensitivity than the magnitude based sensing approach.

Original languageEnglish (US)
Pages (from-to)2869-2877
Number of pages9
JournalJournal of the Acoustical Society of America
Volume154
Issue number5
DOIs
StatePublished - Nov 1 2023

ASJC Scopus subject areas

  • Arts and Humanities (miscellaneous)
  • Acoustics and Ultrasonics

Fingerprint

Dive into the research topics of 'Underwater acoustic sensing using the geometric phase'. Together they form a unique fingerprint.

Cite this