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access icon free Acoustic shooter localisation using a network of asynchronous acoustic nodes

© The Institution of Engineering and Technology
Received 20/01/2016, Accepted 27/06/2016, Revised 24/06/2016, Published 01/09/2016

The present study focuses on the acoustical detection and localisation of shots using a network of wireless asynchronous acoustic nodes. The first sections describe the detection and classification schemes of the developed real-time acoustic nodes and the asynchronous shooter localisation principle. This localisation method is evaluated in free field and in complex propagation conditions, where obstacles affect the propagation of the muzzle blast and shock waves. More than 600 shots with calibre 5.56 to 12.7 mm weapons at distances varying from 100 to 800 m constitute the database used for the evaluation of the localisation performance. It shows that the localisation of shooters in complex environments is possible when the group of acoustic nodes is near to the shot trajectory.

Inspec keywords: weapons; detonation waves; acoustic wave propagation; signal classification; source separation; acoustic signal detection

Other keywords: asynchronous shooter localisation principle; acoustic shooter localisation; complex propagation conditions; shock wave propagation; real-time acoustic node detection; wireless asynchronous acoustic node network; localisation performance evaluation; real-time acoustic node classification; free field conditions; muzzle blast wave propagation; weapons

Subjects: Signal detection; Sonar and acoustic systems (military and defence); Weapons; Shock-wave interactions; Acoustic signal processing

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