Systems and methods for disambiguating shooter locations

摘要

A method is disclosed for determining an unambiguous projectile trajectory using an array of spaced acoustic sensors when a shockwave associated with a projectile is detected by at least five of the sensors but a muzzle blast associated with the projectile is detected by fewer than four of the sensors. The method comprises obtaining four or more shockwave TDOA measurements from the sensors detecting the shockwave, the shockwave TDOA measurements being insufficient to compute the unambiguous projectile trajectory. Fewer than three muzzle blast TDOA measurements are obtained from the sensors detecting the muzzle blast; and solutions to a ballistic model are iteratively computed using the shockwave TDOA measurements and the muzzle blast TDOA measurements to obtain the unambiguous projectile trajectory.