Method and system to localize a firearm using an acoustic detection

摘要

The acoustic detection antenna (5) has a number of microphones (6) at equally spaced intervals, with the spacing in the region of 10 s of centimetres. The microphones detect the sound signals emitted as a bullet (4) is fired from a gun (3). Sound signal magnitudes and their time separation are measured in real time. Two signals are detected, a first intense sound as the bullet is fired at supersonic speed, and a second signal as the bullet is fired from the gun. Processing of the time information allows the firearm position to be found. IMAGE