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http://dx.doi.org/10.7776/ASK.2015.34.1.060

Improvement of Muzzle Localization Using Linear Microphone Array  

Jung, Seong-Woo (Center for Noise and Vibration Control (NOVIC), Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST))
Kim, Yang-Hann (Center for Noise and Vibration Control (NOVIC), Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST))
Publication Information
The Journal of the Acoustical Society of Korea / v.34, no.1, 2015 , pp. 60-65 More about this Journal
Abstract
In this paper, we used the sound of gunshots recorded by multiple microphones to increase the accuracy of the calculation of the distance between sniper and the microphone array. This method is crucial for achieving military objectives. Gunshots are comprised of the explosion of driving gas from the muzzle and the supersonic shock wave from the flying bullet. The original distance calculation method compares the time difference of arrival and angle of incidence to estimate the sniper's location. The disadvantage of this method is that when the angles of incidence coincide the margin of error increases, to solve this problem we suggest a new method using the characteristic changes of the shock wave with the increase of perpendicular distance between the microphone and the trajectory of the bullet. This theory is verified by experiments.
Keywords
Gunshot; Muzzle blast; Projectile sound; Localization;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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