Acoustic target impact point identification system

Abstract

This paper proposes a new target impact point estimation system using acoustic sensors. The proposed system estimates projectile trajectory where it hits a target plane by detecting shock wave created by the passage of a supersonic projectile near the target. The method first measures TDOA (Time Delay Of Arrival) of the shock wave from the two sets of acoustic sensors of the equilateral triangular shape arranged horizontally under the target. Then the acoustic hit coordinate on the target is calculated using triangulation method. The performance of the proposed algorithm was confirmed by comparing the actual impact point with the estimated coordinates of the impact point calculated by proposed algorithm through the actual shooting experiments.