Impulse source localization in an urban environment: Time reversal versus time matching

The Journal of the Acoustical Society of America
Sylvain CheinetThierry Broglin

Abstract

This study investigates two approaches for localizing an impulse sound source with distributed sensors in an urban environment under controlled processing time. In both approaches, the numerical model used for calculating the sound propagation is a finite-difference time-domain (FDTD) model. The simulations are drastically accelerated by restricting to the lower frequencies of the impulse signals and are evaluated against in situ measurements. The first tested localization technique relies on the time reversal of the measurements with the model. In the second technique, the source is localized by matching the observed differences in the first times of arrival of the signals to those obtained from a pre-defined database of simulations with known source positions. The localization performance is physically investigated on the basis of the measurements, considering two source positions and all possible combinations from 5 to 15 microphones. The time matching localization attains an accuracy of 10 m, which is targeted in this study, in the vast majority of the configurations. In comparison, the time reversal localization is affected by the weakness of contributions from sensors masked and distant from the source. Practical requirem...Continue Reading

References

Jul 9, 2004·The Journal of the Acoustical Society of America·Christopher O TiemannL Neil Frazer
Apr 29, 2006·The Journal of the Acoustical Society of America·Lanbo Liu, Donald G Albert
May 20, 2006·The Journal of the Acoustical Society of America·Daniel J MennillSandra L Vehrencamp
Aug 7, 2008·The Journal of the Acoustical Society of America·W C Kirkpatrick AlbertsMark A Coleman
Mar 25, 2010·The Journal of the Acoustical Society of America·Donald G Albert, Lanbo Liu
Jan 28, 2012·The Journal of the Acoustical Society of America·Victor SinghDavid R Dowling
Mar 20, 2012·The Journal of the Acoustical Society of America·Sylvain Cheinet
Sep 18, 2012·The Journal of the Acoustical Society of America·Miomir Mijić, Dragana Šumarac Pavlović
Oct 9, 2012·The Journal of the Acoustical Society of America·Sylvain CheinetPhilippe Blanc-Benon
Dec 13, 2012·The Journal of the Acoustical Society of America·Stephanie M PasareanuRicardo A Burdisso
Apr 6, 2013·The Journal of the Acoustical Society of America·Loïc EhrhardtPhilippe Blanc-Benon
May 10, 2013·The Journal of the Acoustical Society of America·Dietrich Heimann
Aug 24, 2013·The Journal of the Acoustical Society of America·Eva-Marie Nosal
Jun 9, 2014·The Journal of the Acoustical Society of America·Ravish MehraDinesh Manocha
Jun 9, 2014·The Journal of the Acoustical Society of America·Izabela Lyon Freire
Dec 1, 2013·The Journal of the Acoustical Society of America·Ildar R Urazghildiiev, Christopher W Clark
Nov 2, 2015·The Journal of the Acoustical Society of America·E K Skarsoulis, Stan E Dosso

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Citations

Jan 3, 2020·The Journal of the Acoustical Society of America·Yanyang LuRui Duan
Jan 3, 2020·The Journal of the Acoustical Society of America·Adrien DagallierDaniel Juvé

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