Systems and methods of locating weapon fire incidents using measurements/data from acoustic, optical, seismic, and/or other sensors
IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
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출원번호 |
US-0154968
(2008-05-27)
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등록번호 |
US-8325563
(2012-12-04)
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발명자
/ 주소 |
- Calhoun, Robert B.
- Showen, Robert L.
- Beldock, James G.
- Manderville, Scott M.
- Dunham, Jason W.
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출원인 / 주소 |
|
대리인 / 주소 |
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인용정보 |
피인용 횟수 :
2 인용 특허 :
9 |
초록
▼
Systems and methods are disclosed for locating a weapon fire incident such as an acoustic transient from a gunshot, explosion, weapons launch, etc. In one exemplary implementation, there is provided a method of locating the incident from a combination of propagation phenomena including a discharge t
Systems and methods are disclosed for locating a weapon fire incident such as an acoustic transient from a gunshot, explosion, weapons launch, etc. In one exemplary implementation, there is provided a method of locating the incident from a combination of propagation phenomena including a discharge time of the weapon fire incident. Moreover, the method may include obtaining a first propagation parameter of the incident from one or more first sensors, obtaining the discharge time from another sensor, and processing the data to determine a location using a common time basis among sensor measurements. According to further exemplary implementations, the discharge time may include a transient event that has a different propagation velocity than that of sound in the atmosphere.
대표청구항
▼
1. A method of locating a weapon fire incident, the method comprising: obtaining a first propagation parameter of the weapon fire incident from one or more first sensors, wherein each first sensor includes an acoustic sensing element, wherein the propagation parameter includes a first arrival time o
1. A method of locating a weapon fire incident, the method comprising: obtaining a first propagation parameter of the weapon fire incident from one or more first sensors, wherein each first sensor includes an acoustic sensing element, wherein the propagation parameter includes a first arrival time of a first signal from the weapon fire incident, and wherein the first signal's propagation velocity is the speed of sound through air;obtaining a second arrival time of a second signal based on the weapon fire incident from a second, ground-coupled sensor, wherein the second sensor includes a sensing element that measures the discharge time as a function of an impulse of the weapon fire incident received through the ground and data regarding a velocity of the second signal propagating at the speed of sound through the ground;processing first sensor data from the one or more first sensors along with second sensor data from the second sensor using a relative time base between sensors;determining a location of the weapon fire incident as a function of the first arrival time, the second arrival time, and the propagation velocities of the first signal and the second signal, wherein a minimization technique comprising a least squares routine is used in determining the location;providing the location of the weapon fire incident as an output;wherein an acoustic-based calculation of the location of the weapon fire incident is augmented by one or more range estimation or calculation techniques;wherein the range estimation techniques includes use of a seismic sensor used to identify a muzzle blast, or a weapon-fire or a weapon-launch;wherein the location is determined via an algorithm that includes determining intersection(s) between first data representative of the first propagation parameter and second data representative of the second propagation parameter;wherein the sensors include two or more of: (a) 2 sensors having first propagation parameter sensing elements; (b) a single bearing sensor with multiple first propagation parameter sensing elements; and/or (c) a single t0 (discharge time) sensor;wherein the acoustic-based calculation is based on triangulation using the difference in time of arrival of acoustic transients at three or more sensor locations. 2. The method of claim 1 wherein the impulse through the ground propagates at either P-wave velocity or S-wave velocity.
이 특허에 인용된 특허 (9)
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Smith Thomas, Acousto-optic weapon location system and method.
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Gustavsen Arve,NOX ; Otterlei Ragnvald,NOX ; Endresen Tore,NOX, Automatic determination of sniper position from a stationary or mobile platform.
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Knight Lindsay C. (Albury AUX), Discriminatory hit detection in target apparatus.
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Berkovich,Erez; Solomon,Ofer, Flash event detection with acoustic verification.
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Horak,Dan T., Method and system of providing clustered networks of bearing-measuring sensors.
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Chambers Ronald E. (Houston TX), Method for estimating the location of a sensor relative to a seismic energy source.
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Knight Lindsay C. (Albury AUX) Phillips Robert B. (Fleet ; Near Aldershot GB2) Bowyer William H. (Farnham GB2) Moxley Bruce (Reading GB2), Projectile position detection apparatus.
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Barger, James E.; Milligan, Stephen D.; Brinn, Marshall Seth; Mullen, Richard J., Systems and methods for determining shooter locations with weak muzzle detection.
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Smith, Thomas, Weapon location by acoustic-optic sensor fusion.
이 특허를 인용한 특허 (2)
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Carter, Geoffrey Ewald; Frazier, William Garth; Harris, David Ray; Williams, Chad Matthew; Godbold, Gerald Wesley, Event detection system and method of use.
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Overcast, Allan Ward, System and device for nearfield gunshot and explosion detection.
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