Speaker
Description
To study impulse sound of shell explosion position in a far field over 5 km even for nuclear explosion’s position. One new way was designed to perform clear spot image of source position with accurate result, that is a reverse beam-forming of burst pulse sound. Meanwhile, time-delay variance used to estimate source’s coordinates and sound’s average velocity suggested the sound’s propagation is unchanging in its path. Simulation was made to check algorithm’s stability in a 6 km area with random distributed 66-sensor array with spacing over 100 m. A low side lobe result was obtained. After that, a 30-sensor infrasound array with over 10 kPa detection range was created in a 5 km shooting field with spacing over 20 m to detect explosion impulse sound. Position result is quite good with error less than 5 m.
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