Acoustic counter-sniper system

Details Acoustic counter-sniper system Acoustic counter-sniper system

1997-11-19

1999-07-27

Lobo, Ian J.

Communications, electrical: acoustic wave systems and devices

Distance or direction finding

With time interval measuring means

367124, 367906, G01S 518

Patent

active

059302020

ABSTRACT:
A low cost and highly accurate sniper detection and localization system uses observations of the shock wave from supersonic bullets to estimate the bullet trajectory, Mach number, and caliber. If available, muzzle blast observations from an unsilenced firearm is used to estimate the exact sniper location along the trajectory. The system utilizes a distributed array of acoustic sensors to detect the leading edge of a projectile's shock wave and the muzzle blast from a firearm. The detection of the shock wave and muzzle blast is used to measure the wave arrival times of each waveform type at the sensors. This time of arrival (TOA) information for the shock wave and blast wave are used to determine the projectile's trajectory and a line of bearing to the origin of the projectile. A very accurate model of the bullet ballistics and acoustic radiation is used which includes bullet deceleration. This allows the use of very flexible acoustic sensor types and placements, since the system can model the bullet's flight, and hence the acoustic observations, over a wide area very accurately. System sensor configurations can be as simple as two small three element tetrahedral microphone arrays on either side of the area to be protected, or six omnidirectional microphones spread over the area to be monitored. Sensor nodes provide information to a Command node via wireless network telemetry or hardwired cables for the Command Node comprising a computer to effect processing and display.

REFERENCES:
patent: 4813877 (1989-03-01), Sanctuary et al.
patent: 5241518 (1993-08-01), McNelis et al.
patent: 5258962 (1993-11-01), Karlsen
patent: 5544129 (1996-08-01), McNelis
patent: 5781505 (1998-07-01), Rowland
R.R. Stoughton, SAIC Sentinel Acoustic Counter-Sniper System, Science Applications International Corporation, vol. 2938, pp. 276-284, Aug. 1997.
E.M. Carapezza, et al., DARPA Counter Sniper Program, Phase I Acoustic Systems Demonstration Results, SPIE, vol. 2938, pp. 299-310, Aug. 1997.
G.L. Duckworth, et al., A Robust Algorithm for Tracking of Drifting Acoustic Arrays in the Arctic, Earth Resources Laboratory, Massachusetts Institute of Technology, pp. 1-6.

Affiliated with

Also associated with

Rating

Acoustic counter-sniper system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Acoustic counter-sniper system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Acoustic counter-sniper system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-887150