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| Number | Title | Issue Date |
| 7433266 | Acoustic source localization system and applications of the same A system for locating an acoustic source from an acoustic event of the acoustic source. In one embodiment, the system includes a sensor network having a plurality of spatially separated sensor nodes each located in a predetermined position encountering acoustic wave... | 10/07/2008 |
| 7408840 | System and method for disambiguating shooter locations Systems and methods for determining and disambiguating the location of the shooter of supersonic projectiles based on shockwave-only signals are described. Using several spaced sensors, an initial portion of the shockwave-only signals is sensed to determine Time-Dif... | 08/05/2008 |
| 7372772 | Systems and method for compensation of sensor degradation in shooter detection systems Systems and methods for compensation of sensor degradation in multi-shooter detection systems are described. In such systems, shooter position and trajectory can be estimated precisely from the shockwaves produced at the plurality of sensors by the incoming shots. H... | 05/13/2008 |
| 7359285 | Systems and methods for determining shooter locations with weak muzzle detection 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 ... | 04/15/2008 |
| 7292501 | Compact shooter localization system and method Systems and methods for locating the shooter of supersonic projectiles are described. Muzzle blast signals are neither sought nor required. The system uses at least two sensors, with each sensor having a 3-axis accelerometer. The sensors are spaced apart at least 1 ... | 11/06/2007 |
| 7266045 | Gunshot detection sensor with display A system for locating and identifying an acoustic event such as gunfire. The inventive system employs a plurality of man wearable acoustic sensors for detecting gunfire, each acoustic sensor having a display associated therewith for displaying information concerning... | 09/04/2007 |
| 7203132 | Real time acoustic event location and classification system with camera display An acoustic event location and classification system comprising an array of at least two acoustic transducers arranged spaced from one another; a central data processing unit for receiving signals from the acoustic transducers and processing the signals to determine... | 04/10/2007 |
| 7190633 | Self-calibrating shooter estimation Shockwave-only solutions that estimate shooter position and shot trajectory are extremely sensitive to the quality and precision of the shock time-of-arrival (TOA) measurements as well as the accuracy to which relative sensor positions in space are known. Over the l... | 03/13/2007 |
| 7181356 | Device and method for analyzing the structure of a material The invention relates to a device that is used to analyse the structure of a material. The inventive device comprises: probe elements (5) which are used to (i) emit a wave, in the material, with emission delay laws that correspond to several simultaneous devi... | 02/20/2007 |
| 7139222 | System and method for protecting the location of an acoustic event detector A system and method for protecting sensor positions in an array of acoustic sensors which make up a gunfire locator system. The inventive system includes a purity of sensors and a host computer. Each sensor includes: a microphone for receiving acoustic information; ... | 11/21/2006 |
| 7126877 | System and method for disambiguating shooter locations Systems and methods for locating the shooter of supersonic projectiles based on shockwave-only measurements are described. Muzzle blast signals are neither sought nor required. The system uses at least five, preferably seven, acoustic sensors that are spaced apart a... | 10/24/2006 |
| 6847587 | System and method for identifying and locating an acoustic event A system and method for detecting, identifying, and fixing the location of the source of an acoustic event. The inventive system includes: a plurality of sensors dispersed at somewhat regular intervals throughout a monitored area; a communication network adapted to ... | 01/25/2005 |
| 6563763 | Method and system for correcting for curvature in determining the trajectory of a projectile Given a trajectory and unit pointing vectors determined based on a planar or other approximation of a shock wave, a method and apparatus are provided to calculate times the sensors should have detected, based on a conical geometry of the shock wave. A dif... | 05/13/2003 |
| 6552963 | Firearm discharge detection device and warning system A firearm discharge detection device and alarm system featuring a plurality of detector units placed inside a structure which communicate with a central monitoring unit. Each detection unit will detect the discharge of a firearm in its proximity from deci... | 04/22/2003 |
| 6400647 | Remote detection system A remote acoustic detection system includes at least one detection unit delivered to a remote or inaccessible location by a missile or other aircraft. The detection unit monitors acoustic events at the location such as aircraft takeoffs and landings and p... | 06/04/2002 |
| 6185153 | System for detecting gunshots A system for detecting gunshots includes an input device including a microphone for converting acoustic noises into signals and amplifiers for amplifying the input signals, a threshold detector for receiving the amplified signals and comparing the signals... | 02/06/2001 |
| 6178141 | Acoustic counter-sniper system 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 fir... | 01/23/2001 |
| 6115327 | System for detecting gunshots A system for detecting gunshots includes an input device including a microne for converting acoustic noises into signals and amplifiers for amplifying the input signals, a threshold detector for receiving the amplified signals and comparing the signals w... | 09/05/2000 |
| 6041654 | Method and device in an aerial towed hit detector An aerial towed hit detector used together with a sleeve target can obtain an oscillatory movement in the roll angular direction because of the small aerodynamic stability of the target. For determining the path or the miss distance of a projectile passin... | 03/28/2000 |
| 5973998 | Automatic real-time gunshot locator and display system A system to accurately and rapidly present the location of gunfire or other explosive events to dispatchers uses a sparse set of distributed acoustic sensors mounted on rooftops or utility poles to allow triangulation of the gunfire sounds. If a fourth si... | 10/26/1999 |
| 5944317 | Shock wave scoring apparatus employing dual concentric curved rod sensors This invention is an automatic gunnery system, responsive to airborne acoustic shock waves produced by a projectile passing through a target area. The invention relates specifically to the "hit" location of the said projectile for the condition when the f... | 08/31/1999 |
| 5930202 | Acoustic counter-sniper system 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 fir... | 07/27/1999 |
| 5920522 | Acoustic hit indicator This invention discloses a method of indicating information related to the trajectory of a projectile traveling at a supersonic velocity, the trajectory intersecting a predefined target plane at a point of incidence and having an angle of incidence with t... | 07/06/1999 |
| 5917775 | Apparatus for detecting the discharge of a firearm and transmitting an alerting signal to a predetermined location An apparatus for detecting the discharge of a firearm and transmitting an alerting signal to a predetermined location. The invention provides for detection circuitry having: (1) a microphone for detecting pre-set sensitivity levels, (2) a measuring means ... | 06/29/1999 |
| 5912862 | Automatic determination of sniper position from a stationary or mobile platform A method is described to determine the position of one or more snipers when a listening station is located in the target area, and when the snipers are randomly located. The intelligent listening system can be located at a stationary or mobile platform, c... | 06/15/1999 |
| 5781505 | System and method for locating a trajectory and a source of a projectile A projectile trajectory and source location system and method identifies, calizes, and displays a projectile trajectory relative to one or more stationary objects, such as buildings in an urban environment. The system includes a sensor array and trajector... | 07/14/1998 |
| 5721712 | Aircraft detection system A covert aircraft detection system for a submarine is described which inces an acoustic antenna array and a signal processor to process the acoustic signals to provide the location of the detected aircraft and to classify the detected aircraft. The acous... | 02/24/1998 |
| 5703835 | System for effective control of urban environment security A security system for detecting a gunshot event. A communication link, and a number of pole units are arranged in a dense grid. Each one of the pole units includes a microphone and a signal conditioning and thresholding unit coupled to the microphone. The... | 12/30/1997 |
| 5586086 | Method and a system for locating a firearm on the basis of acoustic detection Location of a firearm firing projectiles is accomplished by using an acoustic detection antenna that includes at least three microphones spaced apart from one another to detect and record signals and time offsets of the signals which are representative of... | 12/17/1996 |
| 5544129 | Method and apparatus for determining the general direction of the origin of a projectile Methods and apparatus are provided for determining the general direction of the origin of a projectile. At least one sensor, having at least three spaced-apart transducers, each being capable of encountering a blast wave generated at an origin of and by a... | 08/06/1996 |
| 5504717 | System for effective control of urban environment security A security system for detecting and reporting gunshot events for control of urban environment security which includes a communication link coupled to a plurality of pole units arranged in a dense grid. Each of the plurality of pole units includes a microp... | 04/02/1996 |
| 5477506 | In-flow acoustic sensor An acoustic sensor for measuring acoustic waves contained in fluid flow flowing over the sensor. The acoustic sensor reduces any unwanted self-noise associated with the flowing fluid by providing a nose cone having proper aerodynamic properties and by pos... | 12/19/1995 |
| 5455868 | Gunshot detector An amplitude responsive detection system analyzes the amplitude characteristic of a received noise and determines whether that characteristic conforms to the predictable audio signature of a gunshot. If a received noise reaches a predetermined amplitude l... | 10/03/1995 |
| 5387792 | Optical frequency encoding for normal shock and position sensing Optical frequency encoding for normal shock and position sensing where the modulated signal is coupled to a single fiber as a sum total of all the wavelength components.... | 02/07/1995 |
| 5283430 | Optical frequency encoding for normal shock and position sensing having a broadband light source and a color gradient filter Optical frequency encoding for normal shock and position sensing where the modulated signal is coupled to a single fiber as a sum total of all the wavelength components.... | 02/01/1994 |
| 5258962 | Acoustic projectile trajectory evaluation device This invention is concerned with an indicator apparatus for determination of the trajectory or the trajectory direction of a projectile travelling at supersonic speed. It comprises pressure sensitive transducers (T1 -T4), which have ... | 11/02/1993 |
| 5247488 | Apparatus and method for the electro acoustical measurement of the angular direction of projectiles passing in flight at air-tow-targets Apparatus and method for the electro-acoustical measurement of the angle ection of passing projectiles at air-tow-targets, wherein at least three acoustical sensors are equidistantly positioned on a fixed sensor ring which is supported by the tow-target,... | 09/21/1993 |
| 5241518 | Methods and apparatus for determining the trajectory of a supersonic projectile Apparatus and method for determining the trajectory of a supersonic projectile of unknown velocity and direction having at least three spaced-apart sensors capable of encountering a shock wave generated by a supersonic projectile passing in the vicinity o... | 08/31/1993 |
| 5229748 | Monitoring system for monitoring the window panes of an interior, for example a motor vehicle interior A monitoring system for monitoring window panes of an interior of a space or chamber having a plurality of window panes and lateral and/or upper and/or lower walls surrounding the window panes, such as an interior of a motor vehicle to be monitored for in... | 07/20/1993 |
| 5220160 | Adaptive fiber optic shock wave sensor A fiber optic-type shock wave sensor automatically adapts itself in response to vibration preventing false shock wave detection signals. The sensor includes a sensor element comprising a pair of mating toothed rings and a fiber optic coil disposed between... | 06/15/1993 |
