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Acoustic ranging of small arms fire using a single sensor node collocated with the target
1Maritime Division, Defence Science and Technology Organisation, NICTA Building, 13 Garden Street, Eveleigh, New South Wales 2015, Australia kam.lo@dsto.defence.gov.au, brian.ferguson@dsto.defence.gov.au.
Abstract:
A ballistic model-based method, which builds upon previous work by Lo and Ferguson [J. Acoust. Soc. Am. 132, 2997-3017 (2012)], is described for ranging small arms fire using a single acoustic sensor node collocated with the target, without a priori knowledge of the muzzle speed and ballistic constant of the bullet except that they belong to a known two-dimensional parameter space. The method requires measurements of the differential time of arrival and differential angle of arrival of the muzzle blast and ballistic shock wave at the sensor node. Its performance is evaluated using both simulated and real data.
