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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...
7522736 Systems and methods for microphone localization  
Systems and methods determine the location of a microphone with an unknown location, given the location of a number of other microphones by determining a difference in an arrival time between a...
7400142 Dynamic magnetic anomaly compensation  
An array of three-axis magnetometers used for dynamic magnetic anomaly compensation are located at the corners of a parallelopiped, with pairs of magnetometer outputs used to derive a magnetic...
7333622 Dynamic binaural sound capture and reproduction  
A new approach to capturing and reproducing either live or recorded three-dimensional sound is described. Called MTB for “Motion-Tracked Binaural,” the method employs several microphones, a...
7315488 Methods and systems for passive range and depth localization  
A to method and system provide a range and depth localization of a passive sound generator, e.g., a submarine target. The method and system use an autocorrelation and/or a cross correlation to...
7304911 Underwater location apparatus  
Measuring apparatus for providing information on the relative location of a target site which is radiating a target signal that includes a predetermined pulse signal, comprises receiver means for...
7289391 Narrowband phase difference measurement technique for sonar applications  
The present invention is directed to a sonar system that includes a transmitter configured to direct multi-frequency transmit signals into a propagation channel. Each multi-frequency transmit...
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...
7248540 Dual channel delay sensing circuit  
A circuit coupled to an array antenna, such as a sonar transducer array, for measuring the angle of orientation of an incident wave of radiation is formed of first and second channels coupled to...
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...
7215785 Passive sound telemetry system and method and operating toy using the same  
A passive sound telemetry system and method is provided, in which phase differences are calculated for every pulse from acoustic signals received via three or six acoustic receivers, to measure a...
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...
7162043 Microphone array sound source location system with imaging overlay  
In order to locate and display the source of a sound such as a noise at a factory or the like accurately even when it is outside, a pair of microphones (M 1 , M 3 ) and another pair of microphones...
7139221 Close range sonar system and method  
A system for close range sonar is provided. The system provides sufficient warning to permit maneuvering to avoid a close encounter even in the forward starboard/port regions, which have been...
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...
7025348 Method and apparatus for detection of multiple documents in a document scanner using multiple ultrasonic sensors  
An apparatus ( 10 ) for detection of multiple documents ( 42 ) in a document transport system comprises a first transmitter ( 13 ) emitting a first signal at a first interval through a document...
7006008 System for determining the position of a transponder  
A system for determining the position of a transponder transmitting a signal and moving along a route is disclosed. The route includes a measuring station with at least two measuring points having...
7000476 Inclination angle measurement apparatus  
An inclination angle measurement apparatus includes a first ultrasonic sensor ( 3 ) for sending an ultrasonic wave toward a reflective object ( 2 ), second and third ultrasonic sensors ( 4 and 5...
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...
6724689 Personal identification method and apparatus using acoustic resonance analysis of body parts  
An acoustic spectra personal identification system comprising acoustic signal generating means, acoustic transducer means and computer means including storage means, processor means and acoustic...
6714483 Inclination angle measurement apparatus  
An inclination angle measurement apparatus includes a first ultrasonic sensor ( 3 ) for sending an ultrasonic wave toward a road surface ( 2 ), second and third ultrasonic sensors ( 4 and 5 )...
6594201 System and method for localizing targets using multiple arrays  
A system and process for localizing signals received on multiple co-linear arrays reduces the adverse effects on localization performance due to background noise. The system and process coherently...
6590833 Adaptive cross correlator  
A system and method are provided for an adaptive filter that is especially useful for sonar signal processing. The beam outputs of a conventional beamformer are provided as inputs to adaptive notch...
6525993 Speaker direction detection circuit and speaker direction detection method used in this circuit  
Signals from microphones 1, 2 are first stored in memory circuits 4, 6 and then supplied to a cross-correlation arithmetic circuit 7, following which a cross-correlation operation is carried...
6511064 Method and apparatus for multiple document detection using ultrasonic phase shift amplitude  
According to one aspect of the present invention an apparatus for multiple document detection includes an ultrasonic transmitter ( 14 ) for transmitting an ultrasonic signal ( 16 ). An ultrasonic...
6473363 Sonar direction finding  
A method of determining the bearing of a source of a sonar signal comprising determining the phase of a cyclic variation of the output signal of a sonar detector having a directional characteristic...
6442510 Method and apparatus for determining transit-time differentials for signal waveforms for real-time pattern recognition, localization and monitoring of optical and acoustic signals  
A method includes the steps of segment-wise detecting and bringing into coincidence signal waveforms for conversion into monotone and continuous trajectories for real-time pattern recognition,...
6353578 Phase alignment for vector and coherent signal processing  
The invention involves a computationally simple and fast method for aligning the phases of complex signals (real (in phase) and imaginary (quadrature) components) before performing a coherent (in...
6198693 System and method for finding the direction of a wave source using an array of sensors  
A system and method for finding the direction of a wave source using an array of sensors. The system includes a sensor array for measuring waves from the wave source, an approximate-direction...
6160758 Utilization of auto and cross-correlation functions in methods for locating a source of a primary signal and for localizing signals  
A method of localizing signals utilizing auto-correlation functions and cross correlation functions includes: collecting data at a plurality of input channels; filtering the data collected from the...
6069585 Personal direction finding apparatus  
5909409 Method and apparatus for underwater acoustic detection and location of an object  
An underwater combination of a passive and an active acoustic mechanism is sed to detect and locate a surfaced or submerged object or target. The passive mechanism utilizes a pair of separated...
5867125 Incremental phase and distance measurement through digital phase signature comparison  
A displacement measuring method that measures phase changes between a reference and a phase-shifted signal from -∞ to ∞ degrees (limited by the size of counters) in precise incremental steps...
5659520 Super short baseline navigation using phase-delay processing of spread-spectrum-coded reply signals  
A short baseline navigation system employs the real-time estimation of the positions of multiple cooperative targets. Each target replies with a unique stepped frequency sequence signal that covers...
5657393 Beamed linear array microphone system  
A sound enhancement system including a beamed linear array microphone system for the acoustic pickup of voice and music from substantial distances with a relatively narrow sound pickup beam and...
5581620 Methods and apparatus for adaptive beamforming  
Methods and systems for beamforming are disclosed that include a signal processor that can dynamically determine the relative time delays between a plurality of frequency-dependent signals. The...
5581036 Bandwidth sampling technique for digital focusing in array imaging systems  
The present invention-relates to an ultrasonic array imaging system for focusing ultrasonic signals which are reflected from an object to be imaged and received by an array transducer. A digital...
H001618 Coherent arrays of drifting sonobuoys  
By incorporating a Global Positioning System (GPS) receiver into the electronics of an active or passive sonobuoy for determining a geoposition of each sonobuoy comprising an array of sonobuoys or...
5570099 TDOA/FDOA technique for locating a transmitter  
A process for locating a transmitter in which the signal is received by first and second receivers and then processed by respective analog to digital converters and filtered to yield first and...
5568154 System and a method for the instantaneous determination of the frequencies and angles of arrival of simultaneously incoming RF signals  
A system for the instantaneous determination of the frequencies and angles of arrival of a plurality of simultaneously incoming signals. The system includes beam network matrix for receiving the...
5561641 Underwater detection system for determining carrier frequencies of signals arriving from a wide area  
The present invention is directed to provide an underwater detection system which can determine frequency components contained in echoes arriving from all azimuthal directions at high speed and...
5559756 Acoustic intercept reciever-combined frequency and bearing processor  
A signal processor for obtaining frequency and bearing information of an ustical signal. Responsive to the acoustical signal, a multimode hydrophone generates a plurality of electrical signals...
5495427 High speed high resolution ultrasonic position and orientation tracker using a single ultrasonic frequency  
An ultrasonic tracking system embodying the invention has an array of plural ultrasonic detectors at discrete locations, the plural detectors being responsive to an ultrasonic signal of frequency f...
5488662 System and method for identifying an arrival time of a communicated signal  
A transmitter (12) broadcasts a PN encoded message (16). A receiver (14) includes a SAW correlator (38) configured to autocorrelate with the PN sequence used in the broadcast signal. A preamble of...
5469403 Digital sonar system  
A transponder of an active digital sonar system identifies a multifrequency underwater activating sonar signal received from a remote sonar transmitter. The transponder includes a transducer that...
5446701 Object locator system  
An object locating system, especially for use in locating a gaming ball in the game of football, utilizes a series of three sensors positioned on one side of a football playing field and a...
5432753 Target detector and localizer for passive sonar  
A system for target detection and localization with an algorithm for performing target motion analysis (TMA) using data from a passive sonar array and which works directly with beam spectra to...
5417113 Leak detection utilizing analog binaural (VLSI) techniques  
A detection method and system utilizing silicon models of the traveling wave structure of the human cochlea to spatially and temporally locate a specific sound source in the presence of high noise...
5353223 Marine navigation method for geophysical exploration  
The present invention provides a method for on-line real-time processing of processing navigational data for determining the location of sensor and receiver points in a navigational network having...
5349568 Leak locating microphone, method and system for locating fluid leaks in pipes  
A leak detecting microphone inserted directly into fluid within a pipe includes a housing having a first end being inserted within the pipe and a second opposed end extending outside the pipe. A...
Matches 1 - 50 out of 232 1 2 3 4 5 >