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7623413 |
Distance measurement for building automation devices with wireless data communications
In a building environment, a distance associated with a building automation device is determined as a function of an interval or an inserted time delay between a wireless transmission of a signal...
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7606115 |
Acoustic airspace collision detection system
An acoustic collision detection system that enables an aircraft to detect an approaching target, recognize the potential for collision and change course to maintain a safe separation distance, with...
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7561492 |
System and method for detection using ultrasonic waves
Described is a system and method for detection using an ultrasonic wave. The system may include a first arrangement and a second arrangement. The first arrangement may include a transmitter and a...
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7542825 |
Sensor fusion system and vehicle control system therewith
Each of multiple probability distribution outputting units computes a probability distribution of a data value detected by the corresponding sensor or algorithm in an image recognition processing...
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7529153 |
Positional information detecting method and device
In a positional information detecting device, a tone-burst signal propagating unit causes a tone-burst signal to propagate through a path. The tone-burst signal is composed of a continuous wave...
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7515506 |
Determination of time-difference of arrival and angle of arrival
The delay between two signals is determined by obtaining zero crossings from each signal, and using each crossing to trigger the sampling of the other signal. Two samples are taken in response to...
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7471592 |
Method and apparatus for passive acoustic ranging
An apparatus for range-estimating a noise source including a first passive, vertical hydrophone array of at least two receivers at a first distance from the noise source. The apparatus includes a...
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7411865 |
System and method for archiving data from a sensor array
A system and method for archiving and retrieving information from an array of remote sensors. In a preferred embodiment the invention is incorporated in a gunshot detection and location system to...
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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...
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7376045 |
System and method for determining positions of towed marine seismic streamers
A system comprises a plurality of acoustic transmitters, mounted inside the streamers, adapted to transmit broadband signals having low cross-correlation between the signals of different...
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7372773 |
Method and system of providing clustered networks of bearing-measuring sensors
System and method for determining a location of a first target. The sensor network comprises a first sensor cluster comprising a first plurality of bearing measuring sensors. A first gateway is...
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7362655 |
Time-synchronous acoustic signal ranging system and method
This is an underwater acoustic ranging system for determining a range to a target object. An acoustic receiver is provided for detecting acoustic energy and determining an angle of arrival of said...
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7362653 |
Underwater geopositioning methods and apparatus
A method and apparatus for determining the geophysical position of an autonomous underwater system utilizing underwater acoustic modems that exchange broadband underwater acoustic signals. The...
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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...
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7333394 |
Navigational aid for diver
A diver unit computes the direction and distance to a specified target. When the target is obstructed, the diver unit receives navigation assistance data from another diver unit. The navigation...
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7319640 |
Noise suppression system
A method and apparatus is provided for suppressing noise which includes receiving a plurality of signals from an array of sensors and transforming each of these signals to the frequency domain. The...
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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...
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7277359 |
Navigation processor, a system comprising such a navigation processor and a method of controlling an underwater system by such a navigation processor
A navigation processor is interfaced to an acoustic processor and to DGPS surface positioning equipment on a vessel. The navigation processor receives (a) position data from the DGPS surface...
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7272073 |
Method and device for generating information relating to the relative position of a set of at least three acoustic transducers
The invention relates to a method and device for generating data about the mutual position of at least three acoustic transducers. The aim of the invention is to make it possible to continuously...
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7266043 |
Method for directional location and locating system
In order to locate electromagnetic or acoustic signal sources of a sensor configuration ( 1 a through 1 c ) fitted with at least two electric outputs; where the incidence-dependent transfer...
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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...
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7266044 |
Method and apparatus for acoustic source tracking using a horizontal line array
An apparatus for processing passive acoustic signals received on a horizontal line array that were either emitted from an underwater object or echo returned from an object, is proposed to track the...
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7260022 |
Method and apparatus for detecting, evaluating and identifying a stationary or moving object
A method and apparatus for the determination of a stationary and/or moving object, such as a vehicle, acoustic signals emitted by the object and/or reflected by another object are recorded and used...
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7221622 |
Speaker distance detection apparatus using microphone array and speech input/output apparatus
There are provided a speaker distance detection apparatus and method using a microphone array, capable of exactly detecting the distance between a speaker and even a small terminal such as a mobile...
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7204347 |
Arrhythmic pulse sequence for sonic distance measurement
A position detecting device for detecting the position of an object ( 12 ) movable along a predetermined path of movement, comprising a signal transmission medium ( 13 ) extending along the path of...
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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...
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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...
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7170820 |
Determination of time difference of arrival in distributed sensor networks
An object localising system comprises sensor devices at different sites, each sensor device being capable of detecting a signal from an object, and control means for repeatedly responding to the...
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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....
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7130245 |
Ultrasonic double feed detecting device
A double feed detecting apparatus provided with an ultrasonic transmitter installed on one side of a transport path for a sheet material for transmitting an ultrasonic toward the sheet material, an...
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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...
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7126876 |
Harmonic ambiguity resolver and inter array harmonic tracker
The present application discloses a method for resolving harmonic ambiguity and inter-array harmonic tracking. The method allows derivation of a complete set of possible harmonic families given the...
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7123547 |
Time delay measurement
A time measurement system for measuring the delay between first and second signals comprises means for detecting the times of upcrossings when the first signal crosses a predetermined level...
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7088640 |
Method of obtaining acoustic metrology data
The relative position and orientation between two subsea structures ( 210, 212 ) are measured by ultra-short baseline acoustic metrology. Dual mode master/slave ( 220, 222 ) stations comprising a...
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7054228 |
Sound source location and quantification using arrays of vector probes
Method and apparatus for locating and quantifying sound sources using an array of acoustic vector probes ( 200 ). Signals received at the probes are converted to digital form and fed into a digital...
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7020046 |
System and method for target motion analysis with intelligent parameter evaluation plot
An underwater target tracking capability is disclosed for a grid-search technique utilizing parameter evaluation plot techniques comprising processing acoustic sonar measurements in conjunction...
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7009912 |
Method and system for detection of broadband energy
A system and related method for the detection of low power broadband signal sources in a high noise environment. The system uses multiple collinear arrays of sensors to receive data signals. The...
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6987856 |
Binaural signal processing techniques
A desired acoustic signal is extracted from a noisy environment by generating a signal representative of the desired signal with a processor. The processor receives aural signals from two sensors...
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6980486 |
Acquisition system particularly suited for tracking targets having high bearing rates
An apparatus for a bearing tracker is disclosed that provides improved estimates of target's bearing, bearing rate and signal-to-noise (SNR). The estimates are computed using normalized beam...
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6954404 |
Method for determining position and velocity of targets from signals scattered by the targets
A method for determining position and velocity of targets from signals scattered by the targets using a first and a second station each including a transmitter/receiver of electromagnetic or...
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6901030 |
Tracking multiple targets in dense sensor fields
The methods and systems relate to tracking targets, and more particularly to tracking multiple targets within a field of densely distributed sensor nodes using wave processing/analysis methods...
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6894950 |
Underwater vehicle thermal boundary detection system
A thermal sensor system is provided in combination with a maneuverable vehicle, particularly in an underwater application. The system includes a transport pipe having an intake and output for the...
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6885612 |
Panoramic audio device for passive sonar
The invention concerns panoramic audio devices to process the impulsive signals received by passive sonars. It consists in isolating, in each beam, impulsive signals in the frequency and time...
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6868045 |
Voice control system with a microphone array
Voice control systems are used in diverse technical fields. In this case, the spoken words are detected by one or more microphones and then fed to a speech recognition system. In order to enable...
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6868044 |
Data adaptive interference suppression
A technique for suppressing interference with unknown phase shifts received by an array of sensor elements partitions the array into a plurality of subarrays. Each subarray is processed...
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6847588 |
Method for changing the frequency for sampling sonar wavefronts
A system and method for processing sonar information from an underwater hydrophone array, at frequencies having wavelengths less than two times a spacing between adjacent hydrophones. The method...
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6831875 |
Apparatus for ultrasonically detecting position of web edge and method of doing the same
An apparatus for ultrasonically detecting an edge of a web, includes a ultrasonic-wave transmitter transmitting ultrasonic-wave pulse train, a ultrasonic-wave receiver receiving the ultrasonic-wave...
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6819984 |
LOST 2—a positioning system for under water vessels
A system for the accurate determination of the position of an underwater vehicle comprising a system observer subsystem having a state velocity update module, a terrain matching module, means for...
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6816437 |
Method and apparatus for determining orientation
The position and orientation of a mobile unit is determined from ultrasonic waves received from beacons of known location. Orientation is determined from a phase difference of the sensed ultrasonic...
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6757219 |
Raster based system and method for target tracking and motion analysis
A system and method for determining target solutions based on energy received at one or more sensors includes the step of displaying the received energy on a display. Target solution traces are...
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