Position deviation measurement between projectile explosion and target for air defense system

Position deviation measurement between projectile explosion and target is important for accuracy test of naval gun system. By recording the arrival time and output amplitude of acoustic-optic signal during firecracker explosion, the concept of detecting the explosion signal of small equivalent gun powder based on acoustic-optic method was verified. The arrival time difference of acoustic wave and light wave was 14-7 ms at an explosion distance of 5 m. The receiving distance of the sensor was 8 m~20 m at different angles. The arrival time of the explosion acoustic-optic signal and the receiving distance of the sensor were tested. The results validated the feasibility of making the measurement using acoustic-optic signal. Combined with the distance error data between projectile and target, the statistical analysis of the deviation data could be done.