Localization based on time-reversed event sounds

Candy, Jim; Fisher, Karl A.; Candy, Christopher Roland

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Title: Localization based on time-reversed event sounds

Abstract

A system determines an event location of an event within an indoor environment based on an event sound generated by the event. The system employs time-reversal techniques based on a received event sound to identify the event location as being in the vicinity of one of a plurality of locator devices at locator locations in the environment. The system includes a base array located within the environment that receives an indication that an event has been detected. Upon receiving the event sound, the system generates a time-reversed event sound for each transceiver and transmits via each transceiver the time-reversed event sound for that transceiver. When a locator device receives a time-reversed event sound, the locator device determines whether the event is in the vicinity of that locator location of the locator device and, if so, outputs an indication that the event occurred at that locator location.

Inventors:: Candy, Jim; Fisher, Karl A.; Candy, Christopher Roland

Issue Date:: 2022-11-08

Research Org.:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1986790

Patent Number(s):: 11495243

Application Number:: 16/943,250

Assignee:: Lawrence Livermore National Security, LLC (Livermore, CA)

DOE Contract Number:: AC52-07NA27344

Resource Type:: Patent

Resource Relation:: Patent File Date: 07/30/2020

Country of Publication:: United States

Language:: English

Citation Formats


                    Candy, Jim, Fisher, Karl A., and Candy, Christopher Roland. Localization based on time-reversed event sounds.  United States: N. p., 2022. 
        Web.

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                    Candy, Jim, Fisher, Karl A., & Candy, Christopher Roland. Localization based on time-reversed event sounds.  United States.

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                    Candy, Jim, Fisher, Karl A., and Candy, Christopher Roland. Tue .  
        "Localization based on time-reversed event sounds".  United States.  https://www.osti.gov/servlets/purl/1986790.

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@article{osti_1986790,

  title        = {Localization based on time-reversed event sounds},

  author       = {Candy, Jim and Fisher, Karl A. and Candy, Christopher Roland},

  abstractNote = {A system determines an event location of an event within an indoor environment based on an event sound generated by the event. The system employs time-reversal techniques based on a received event sound to identify the event location as being in the vicinity of one of a plurality of locator devices at locator locations in the environment. The system includes a base array located within the environment that receives an indication that an event has been detected. Upon receiving the event sound, the system generates a time-reversed event sound for each transceiver and transmits via each transceiver the time-reversed event sound for that transceiver. When a locator device receives a time-reversed event sound, the locator device determines whether the event is in the vicinity of that locator location of the locator device and, if so, outputs an indication that the event occurred at that locator location.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2022},

  month        = {11}

}

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Similar Records

Title: Localization based on time-reversed event sounds

Abstract

Citation Formats

Angle Sensing for Electronic Device patent-application, October 2019

Experimental subwavelength localization of scatterers by decomposition of the time reversal operator interpreted as a covariance matrix journal, July 2003

Acoustic time-reversal mirrors journal, January 2001

Experimental studies of applications of time-reversal acoustics to noncoherent underwater communications journal, May 2003

Space-time processing for wireless communications journal, January 1997

Examination of time-reversal acoustics in shallow water and applications to noncoherent underwater communications journal, May 2003

Time-reversal processing for an acoustic communications experiment in a highly reverberant environment journal, March 2004

Combining and comparing time reversal processing and adaptive channel equalization for communication sequences journal, October 2002

Multichannel time-reversal processing for acoustic communications in a highly reverberant environment journal, October 2005

Broadband matched‐field processing journal, November 1993

Determining audio event based on location information patent, November 2018

Time-Reversal Indoor Detection System and Method patent-application, April 2019

Increasing data rate over wireless channels journal, May 2000

Using acoustic orthogonal signals in shallow water time-reversal applications journal, May 2004

Gunshot detection within an indoor environment patent, May 2020

Acoustic firearm discharge detection and classification in an enclosed environment journal, May 2016

Underwater acoustic communication by passive-phase conjugation: theory and experimental results journal, January 2001

Super-resolution in time-reversal acoustics journal, January 2002

Adaptive instant record signals applied to shallow water detection journal, May 2004

Broad-band geoacoustic inversion in shallow water from waveguide impulse response measurements on a single hydrophone: theory and experimental results journal, January 1999

Audio forensic examination journal, March 2009

Apparatus and Method for Generating Filter Characteristics patent-application, May 2011

Method, apparatus, and systems for wireless event detection and monitoring patent, August 2019

Contributed Review: Source-localization algorithms and applications using time of arrival and time difference of arrival measurements journal, April 2016

Acoustic model-based matched filter processing for fading time-dispersive ocean channels: theory and experiment journal, January 1993

Time reversal communication system patent, December 2008

Terahertz technology journal, March 2002

Time reversal in acoustics journal, March 1996

Performance of an underwater acoustic volume array using time-reversal focusing journal, October 2002

Sound focusing in rooms: The time-reversal approach journal, March 2003

Wideband multichannel time-reversal processing for acoustic communications in highly reverberant environments journal, August 2006

Phase conjugation in the ocean: Experimental demonstration of an acoustic time-reversal mirror journal, January 1998

An initial demonstration of underwater acoustic communication using time reversal journal, July 2002

A long-range and variable focus phase-conjugation experiment in shallow water journal, March 1999

Time reversal and the inverse filter journal, July 2000

Phase conjugation in underwater acoustics journal, January 1991

Performance comparisons between passive-phase conjugation and decision-feedback equalizer for underwater acoustic communications journal, May 2004

An Autonomous Surveillance System for Blind Sources Localization and Separation patent-application, March 2016

Taking Advantage of Multiple Scattering to Communicate with Time-Reversal Antennas journal, January 2003

Remote sensing and communications in random media journal, April 2003

System and Method for Acoustically Identifying Gunshots Fired Indoors patent-application, June 2019

Indoor Sound Receiving System and Indoor Sound Receiving Method patent-application, May 2011

Acoustic pulse compression using passive phase-conjugate processing journal, March 1994

Wireless Positioning Systems patent-application, January 2016

Matched-signal (‘‘MESS’’) processing by the ocean journal, August 1995

Simultaneously multiple-depth coherent communications using time reversal journal, May 2004

Sound Data Decoding Apparatus patent-application, January 2010

Angle Sensing for Electronic Device
patent-application, October 2019

Experimental subwavelength localization of scatterers by decomposition of the time reversal operator interpreted as a covariance matrix
journal, July 2003

Acoustic time-reversal mirrors
journal, January 2001

Experimental studies of applications of time-reversal acoustics to noncoherent underwater communications
journal, May 2003

Space-time processing for wireless communications
journal, January 1997

Examination of time-reversal acoustics in shallow water and applications to noncoherent underwater communications
journal, May 2003

Time-reversal processing for an acoustic communications experiment in a highly reverberant environment
journal, March 2004

Combining and comparing time reversal processing and adaptive channel equalization for communication sequences
journal, October 2002

Multichannel time-reversal processing for acoustic communications in a highly reverberant environment
journal, October 2005

Broadband matched‐field processing
journal, November 1993

Determining audio event based on location information
patent, November 2018

Time-Reversal Indoor Detection System and Method
patent-application, April 2019

Increasing data rate over wireless channels
journal, May 2000

Using acoustic orthogonal signals in shallow water time-reversal applications
journal, May 2004

Gunshot detection within an indoor environment
patent, May 2020

Acoustic firearm discharge detection and classification in an enclosed environment
journal, May 2016

Underwater acoustic communication by passive-phase conjugation: theory and experimental results
journal, January 2001

Super-resolution in time-reversal acoustics
journal, January 2002

Adaptive instant record signals applied to shallow water detection
journal, May 2004

Broad-band geoacoustic inversion in shallow water from waveguide impulse response measurements on a single hydrophone: theory and experimental results
journal, January 1999

Audio forensic examination
journal, March 2009

Apparatus and Method for Generating Filter Characteristics
patent-application, May 2011

Method, apparatus, and systems for wireless event detection and monitoring
patent, August 2019

Contributed Review: Source-localization algorithms and applications using time of arrival and time difference of arrival measurements
journal, April 2016

Acoustic model-based matched filter processing for fading time-dispersive ocean channels: theory and experiment
journal, January 1993

Time reversal communication system
patent, December 2008

Terahertz technology
journal, March 2002

Time reversal in acoustics
journal, March 1996

Performance of an underwater acoustic volume array using time-reversal focusing
journal, October 2002

Sound focusing in rooms: The time-reversal approach
journal, March 2003

Wideband multichannel time-reversal processing for acoustic communications in highly reverberant environments
journal, August 2006

Phase conjugation in the ocean: Experimental demonstration of an acoustic time-reversal mirror
journal, January 1998

An initial demonstration of underwater acoustic communication using time reversal
journal, July 2002

A long-range and variable focus phase-conjugation experiment in shallow water
journal, March 1999

Time reversal and the inverse filter
journal, July 2000

Phase conjugation in underwater acoustics
journal, January 1991

Performance comparisons between passive-phase conjugation and decision-feedback equalizer for underwater acoustic communications
journal, May 2004

An Autonomous Surveillance System for Blind Sources Localization and Separation
patent-application, March 2016

Taking Advantage of Multiple Scattering to Communicate with Time-Reversal Antennas
journal, January 2003

Remote sensing and communications in random media
journal, April 2003

System and Method for Acoustically Identifying Gunshots Fired Indoors
patent-application, June 2019

Indoor Sound Receiving System and Indoor Sound Receiving Method
patent-application, May 2011

Acoustic pulse compression using passive phase-conjugate processing
journal, March 1994

Wireless Positioning Systems
patent-application, January 2016

Matched-signal (‘‘MESS’’) processing by the ocean
journal, August 1995

Simultaneously multiple-depth coherent communications using time reversal
journal, May 2004

Sound Data Decoding Apparatus
patent-application, January 2010