The Journal of the Acoustical Society of America, Vol. 126, No. 5, pp. EL112–EL116, November 2009
©2009 Acoustical Society of America. All rights reserved. 
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Explosion localization via infrasound
Curt A. L. Szuberla, John V. Olson, and Kenneth M. Arnoult
Wilson Infrasound Observatories, Geophysical Institute, University of Alaska Fairbanks, Fairbanks, Alaska 99775-7320
(Received: 18 July 2009; revised: 11 August 2009; accepted: 11 August 2009; published online: 24 September 2009)Two acoustic source localization techniques were applied to infrasonic data and their relative performance was assessed. The standard approach for low-frequency localization uses an ensemble of small arrays to separately estimate far-field source bearings, resulting in a solution from the various back azimuths. This method was compared to one developed by the authors that treats the smaller subarrays as a single, meta-array. In numerical simulation and a field experiment, the latter technique was found to provide improved localization precision everywhere in the vicinity of a 3-km-aperture meta-array, often by an order of magnitude. ©2009 Acoustical Society of America
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