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 reversed reverberation focusing in a waveguide.

J F Lingevitch1, H C Song, W A Kuperman

  • 1Naval Research Laboratory, Washington, DC 20375, USA. jfl@aslan.nrl.navy.mil

The Journal of the Acoustical Society of America
|June 27, 2002
PubMed
Summary

Time reversal mirrors effectively process rough interface reverberation in waveguides by analyzing the time reversal operator. This method focuses energy along the interface without needing prior environmental data, proving useful for complex underwater acoustics.

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

Transient Large-Scale Anisotropy in TeV Cosmic Rays due to an Interplanetary Coronal Mass Ejection.

Physical review letters·2026
Same author

First Detection of Ultrahigh Energy Emission from Gamma-Ray Binary LS I +61° 303.

Physical review letters·2026
Same author

Evidence of Cosmic-Ray Acceleration up to Sub-PeV Energies in the Supernova Remnant IC 443.

Physical review letters·2026
Same author

Precise Measurement of the Cosmic Ray Helium Spectrum above 0.1 PeV.

Physical review letters·2026
Same author

All-Sky Search for Individual Primordial Black Hole Bursts with LHAASO.

Physical review letters·2025
Same author

[Association of blood selenium exposure with sex hormones among men aged 18-79 years in China].

Zhonghua yu fang yi xue za zhi [Chinese journal of preventive medicine]·2025

Area of Science:

  • Acoustics
  • Wave Propagation
  • Signal Processing

Background:

  • Time reversal mirrors (TRMs) are established for focusing energy in complex media.
  • Reverberation in waveguides, especially with rough interfaces, poses challenges for acoustic signal processing.

Purpose of the Study:

  • To investigate the application of TRMs for rough interface reverberation processing in a waveguide.
  • To demonstrate the effectiveness of time reversal operator decomposition for acoustic focusing.

Main Methods:

  • Computed the time reversal operator from measured transfer matrix data on a source-receiver array.
  • Filtered reverberation data within a temporal window to form the time reversal operator.
  • Utilized the most energetic eigenvector of the time reversal operator for focusing.

Related Experiment Videos

  • Employed orthogonal array beams for ensonifying the water column to improve signal-to-noise ratio.

    • Main Results:

    • The most energetic eigenvector of the time reversal operator successfully focused energy along the interface at a specific range.
    • Demonstrated improved signal-to-noise ratio measurements of the time reversal operator.
    • Numerical simulations using a Pekeris waveguide validated the method's efficacy.

    Conclusions:

    • Time reversal mirror techniques, based on time reversal operator decomposition, are effective for reverberation processing in waveguides.
    • The method's independence from a priori environmental information makes it suitable for complex shallow water environments.
    • This approach offers a robust way to analyze acoustic signals in challenging underwater conditions.