|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||367/127; 367/906; 367/118; 367/124|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 20 인용 특허 : 18|
Systems and methods for locating the shooter of supersonic projectiles are described. The system uses at least five, preferably seven, spaced acoustic sensors. Sensor signals are detected for shockwaves and muzzle blast, wherein muzzle blast detection can be either incomplete coming from less than 4 sensor channels, or inconclusive due to lack of signal strength. Shooter range can be determined by an iterative computation and/or a genetic algorithm by minimizing a cost function that includes timing information from both shockwave and muzzle signal channe...
What is claimed is: 1. A method for estimating a shooter range by detecting shock wave and muzzle blast, comprising: measuring shockwave-only signals at a plurality of spaced acoustic sensors forming an antenna; measuring a muzzle blast signal at the plurality of acoustic sensors; determining from the measured shock wave and muzzle blast signals an initial estimate of the shooter range; assuming an initial bullet velocity and a bullet drag coefficient; and iteratively computing an instantaneous bullet velocity along a bullet trajectory to obtain an upda...