Application of the algorithm for time of arrival estimation of the shock waves produced by projectiles of different calibers
Miodrag S. Vračar · The Journal of the Acoustical Society of America · 2017
The topic of this paper is review of application of the algorithm for time of arrival estimation of shock waves produced by projectiles of different calibers. Time of arrival estimation of the shock waves is based on algorithm, which consists of wavelet decomposition, identification of the narrow data segment, which holds shock wave by wavelet coefficients and estimation the time of arrival of the shock wave by conventional statistical methods. Sources of the shock waves were projectiles which caliber varied from characteristic rifles, 7.62 mm, through large gun’s calibers up to 120 mm. Quality of the time of arrival estimate is verified on significant number of experiments. Estimated time of arrival is used in solving of the position of weapon when fire off happened. Localization of the shock wave sources was done by networked and in space distributed acoustic sensors. Discrete probability method, based on time differences of the time of arrivals obtained from multiple synchronized acoustic sensors, was used for localization of the weapon and these results are compared with their locations obtained by DGPS method.