Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Time-reversing array retrofocusing in noisy environments.

S R Khosla1, D R Dowling

  • 1Department of Mechanical Engineering, University of Michigan, Ann Arbor 48109-2121, USA.

The Journal of the Acoustical Society of America
|March 16, 2001
PubMed
Summary
This summary is machine-generated.

Noise can impact acoustic time reversal (TRA) performance. This study develops a model to predict TRA retrofocusing probability, considering noise and system parameters, crucial for optimizing TRA design in various environments.

Related Experiment Videos

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Cloud clearing with a CO(2) laser in a cirrus cloud simulation facility.

Applied opticsยท2010
Same author

Computed narrow-band azimuthal time-reversing array retrofocusing in shallow water.

The Journal of the Acoustical Society of Americaยท2001
Same author

Computed narrow-band time-reversing array retrofocusing in a dynamic shallow ocean.

The Journal of the Acoustical Society of Americaยท2000
Same author

Photoacoustic detection and localization of small gas leaks.

The Journal of the Acoustical Society of Americaยท1999
Same journal

Interaction of near-wall bubble arrays with acoustic waves induced by an oscillating rigid wall.

The Journal of the Acoustical Society of Americaยท2026
Same journal

Ultra-broadband underwater acoustic projector based on transverse resonance orthogonal beam (TROB) mode and acoustic matching layer technique.

The Journal of the Acoustical Society of Americaยท2026
Same journal

Fine-scale quantitative analysis of bowhead whale (Balaena mysticetus) song shows varying stability of song types.

The Journal of the Acoustical Society of Americaยท2026
Same journal

High-resolution depth estimation for multiple wideband sources in deep sea via sparse Bayesian learninga).

The Journal of the Acoustical Society of Americaยท2026
Same journal

Depression markers in speech: An approach based on tract variables dynamics.

The Journal of the Acoustical Society of Americaยท2026
Same journal

The oyster toadfish (Opsanus tau) alters active and diurnal calling amid vessel noise in New York City.

The Journal of the Acoustical Society of Americaยท2026
See all related articles

Area of Science:

  • Acoustics
  • Signal Processing
  • Wave Propagation

Background:

  • Acoustic time reversal (TRA) focuses acoustic energy to a source location.
  • Noise can degrade TRA performance, especially at long ranges or low power.

Purpose of the Study:

  • To predict how noise affects the probability of successful TRA retrofocusing.
  • To develop a general formulation for TRA design that accounts for noise and environmental factors.

Main Methods:

  • Developed a general probability formulation for TRA retrofocusing.
  • Incorporated noise variance, source strength, TRA element power, number of elements (N), and propagation characteristics.
  • Validated the formulation using Monte Carlo simulations in free-space and shallow-ocean environments.

Main Results:

  • The formulation predicts TRA array gain between +10log10(N) and +20log10(N) dB.
  • Simulations showed good agreement with the theoretical formulation.
  • Acoustic absorption was identified as a key factor causing deviations in sound channel simulations.

Conclusions:

  • The developed formulation provides a basis for designing robust TRA systems.
  • Understanding noise influence is critical for optimizing TRA performance in real-world acoustic scenarios.
  • The study highlights the trade-offs between TRA performance, noise, and environmental conditions.