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7599248 |
Method and apparatus for determining vector acoustic intensity
A system and method for determining vector acoustic intensity fields using a spherical array of acoustic sensors, and a regularization technique. A mobile spherical array of a number of microphones...
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7379384 |
Echo scope
The present invention is a new technology for producing images which uses echoes of a single brief signal, or “click”. A “click” is transduced by multiple sensors and then digitally...
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7289633 |
System and method for integral transference of acoustical events
A sound system for capturing and reproducing sounds produced by a plurality of sound sources. The system comprises a device for receiving sounds produced by the plurality of sound sources and...
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7259897 |
System, method and apparatus for direct imaging in ultrasonic holography
An acoustical holographic imaging method and apparatus for introducing a reference wave into a hologram surface such that the reference wave does not interfere with an object placed adjacent to or...
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6958950 |
Method of visualizing sound fields of individual sound sources using acoustic holography
The present invention relates generally to a method of visualizing the sound fields of sound sources using acoustic holography, which discriminates the sound fields of individual sound sources...
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6876322 |
Concealed object detection
Disclosed are systems, methods, devices, and apparatus to interrogate a clothed individual with electromagnetic radiation to determine if a concealed weapon is being carried. This determination...
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6831874 |
Ultrasonic holography detector
There is disclosed an improved ultrasonic hologram or other ultrasonic imaging process that accurately forms phase and amplitude information of the hologram in a manner that renders the unit...
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6757215 |
Apparatus and process modifications in ultrasonic holography to improve image quality
A method and apparatus for generating an acoustic holographic image having a plurality of pulses with different characteristic parameters from each other. More particularly, a sequence contains a...
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6672165 |
Real-time three dimensional acoustoelectronic imaging and characterization of objects
An acoustoelectronic method and apparatus for generating real-time three-dimensional images of an object and characterizing such object are provided. The object is insonified with an incident...
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6615143 |
Method and apparatus for reconstructing and acoustic field
Acoustic field reconstruction is performed by expanding basis function which represent outgoing and incoming waves, without prior knowledge of the source geometry and dimensions. The reconstruction...
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6466891 |
System for providing an estimate of the location of an undersea object
A system is disclosed that provides. a sonar operator with the most likely range to a target of interest. The system generates and displays a contour based on ship's parameters, target parameters,...
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6353576 |
Detector in ultrasonic holography
There is disclosed an improved ultrasonic hologram or other ultrasonic imaging process that accurately forms phase and amplitude information of the hologram in a manner that renders the unit...
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6324453 |
Methods for determining the identification and position of and monitoring objects in a vehicle
A vehicle interior monitoring system to identify, locate and monitor occupants, including their parts, and other objects in the passenger compartment and objects outside of a motor vehicle, such as...
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6081481 |
Method for detecting buried objects by measuring seismic vibrations induced by acoustical coupling with a remote source of sound
A method for detecting the seismic discontinuity in acoustic impedance caused by an acoustically hard, reflective object buried a few feet below poroelastic soil using seismic activity induced...
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5986971 |
Image processing system and method for estimating acoustic property of a movable sound source
An image processing system for estimating acoustic properties emitted from a movable sound source on a point in the sound field thereof comprises photoelectric sensors 11 and 12 for measuring a...
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5859609 |
Real-time wideband cylindrical holographic surveillance system
A wideband holographic cylindrical surveillance system including a transceiver for generating a plurality of electromagnetic waves; antenna for transmitting the electromagnetic waves toward a...
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5712805 |
Noise diagnostic system
A method for reconstructing the acoustic field on the surface of a vibrating object based on measurements of the radiated acoustic pressure includes solving the Helmholtz equation directly using...
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5557283 |
Real-time wideband holographic surveillance system
A wideband holographic surveillance system including a transceiver for generating a plurality of electromagnetic waves; antenna for transmitting the electromagnetic waves toward a target at a...
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5455590 |
Real-time holographic surveillance system
A holographic surveillance system including means for generating electromagnetic waves; means for transmitting the electromagnetic waves toward a target at a plurality of predetermined positions in...
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H001330 |
Method of measuring structural intensities in vibrating plate radiators
Structure-borne intensities in a vibrating plate radiator having at least one source of vibration are measured without contacting the radiator by producing a pressure hologram of the pressure...
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5179455 |
Ultrasonic holographic imaging apparatus having an improved optical reconstruction system
A preferred embodiment of the optical reconstruction assembly 50 in which the assembly 50 includes an assembly housing 52 that is a unitary unit for supporting a spatial filter 72 and a light...
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5068835 |
Acoustic holographic array measurement device and related material
An acoustic device and related method for measuring the shape of an object. The device includes a plurality of transmitters for transmitting acoustic waves at an object to be measured and a...
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5031154 |
Three-dimensional object imaging method and system
A three-dimensional object imaging method is implemented on a computer for imaging an object. The three-dimensional object imaging method includes the steps of irradiating ultrasonic waves having...
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4905202 |
Detection panel and method for acoustic holography
A detection panel for acoustic holography with real time image reconstruction includes, a flat cell containing a mixture of nematic and cholesteric liquid crystals whose composition provides a...
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4899318 |
Method and device for reconstructing the shape and position of objects in space
The shape and position of objects in space can be reconstructed from at least two projections of these objects as obtained by transmission of waves influenced by their passage through said objects....
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4729128 |
Personal identification card system
A method and apparatus for a personal identification card system includes a card having a plurality of lamina joined permanently together, with identification information written on the inner...
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4717916 |
High resolution imaging doppler interferometer
A system for simultaneously locating a plurality of targets and distinguishing the targets from noise which utilizes phase detector techniques to generate complex voltage signals and obtain phase...
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4707698 |
Coordinate measurement and radar device using image scanner
A system for measuring angles, including a lens or antenna for focusing the radiation from an object scene onto an image sensor which is shifted by a clock, thereby producing the real time imaging...
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4557386 |
System to measure geometric and electromagnetic characteristics of objects
A system to measure geometric and electromagnetic characteristics of objects. Wave energy of a single frequency (or very narrow band of frequencies) is directed upon an object which reflects (or...
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4507966 |
Method and means for imaging sound waves
In the disclosed method and structure a pulse of a sound filed to be mapped is illuminated at at least two extremes values at different moments with a laser beam of short duration compared to the...
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4415996 |
Nonwavelength-limited holographic sound field reconstruction
A method and apparatus are described for holographically generating visual representations of acoustical characteristics of sound sources. A planar array has a lattice of microphone receiving...
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4330876 |
Sonar systems
A sonar bearing determining system comprises a generator for radiating a sonar signal and a receiver for receiving echo signals. The receiver comprises an array of spaced receiving transducers and...
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4284324 |
Acousto-optical imagery system based on coherent holographic detection in real time
The invention relates to the acousto-optical imagery of objects transmitting ultrasonic waves; an optical image diffracted by the action of an ultrasonic wave is detected by coherent detection in...
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4252024 |
Flaw detection, characterization and study
Echo ranging flaw detecting, characterizing and studying apparatus in which the work is scanned simultaneously by acoustic energy focused at a point from an acoustic-lens transducer and by acoustic...
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4212258 |
Underwater apparatus for acoustically inspecting a submerged object
An underwater apparatus is described for acoustically inspecting a submerged object at considerable depths such as the lower structural portion of an off-shore drilling rig to determine if the...
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4209853 |
Holographic system for object location and identification
An arrangement is provided for locating and identifying objects using holographic techniques. Improvements are achieved by array configuration and particularly with the use of a plurality of arrays...
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4119940 |
Underwater viewing system
An underwater viewing system described herein substantially reduces the number of hydrophones in the receiving array and associated circuitry by providing a plurality of transmitting transducers...
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4088979 |
Underwater imaging system
Acoustic imaging system wherein signals from a target of interest impinge upon a set of receiving transducers. The transducer signals are processed and form the input signals to a transparent delay...
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4070643 |
Acoustic holography apparatus
Apparatus and method for forming acoustic hologram patterns, comprising a receiver transducer for detecting acoustic waves scattered by an object, a scanning system for moving the receiver relative...
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4053867 |
Acoustic hologram reconstructor using surface acoustic wave devices
This invention relates to an acoustical hologram reconstructor using surf acoustic wave (SAW) devices, which is a major part of apparatus which converts an acoustical hologram into a focused...
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4023173 |
Object discerning method and apparatus using a spatial wave propagation
Disclosed is a method and apparatus for holographically discerning an object, using any kind of coherent wave such as microwave, millimeter wave, or sound wave. An asymmetric, dispersive medium is...
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4021771 |
Scan acoustical holographic imaging apparatus
A scan acoustical holographic imaging apparatus is disclosed that is capable of displaying an isometric image of an object scanned with acoustical energy in which the image visually depicts surface...
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4012711 |
Process and apparatus for recording acoustical holograms
An apparatus and method for recording acoustical holograms characterized by the transmitting transducers having a directional characteristic, a transducer, which is either the transmitting or the...
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3996552 |
Device for providing a hologram of an insonified object
A device for providing a hologram of an object which may be converted to an optical image in real time. The device is part of an acoustical holographic system which uses a source of coherent...
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3991606 |
Apparatus and method for converting mechanical wave energy to optical energy
A piezo-optic cell having a nematic liquid crystal film and first and second wedge-shaped plates on opposite surfaces of the film which serve to vary its frequency response along the length of the...
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3942150 |
Correction of spatial non-uniformities in sonar, radar, and holographic acoustic imaging systems
An improved method and apparatus for processing electronic signals for use n establishing an improved image display includes storing the electronic and acoustic response of all the detectors in...
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3911729 |
Shear wave acoustical holography
A method is described for producing acoustical holographic information of an object such as a discontinuity or defect contained in solid material and for producing an optical image of the object....
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3895341 |
Method for aberration-free optical reproduction of highly resolved sonar or radar maps
A method for aberration-free optical recording of highly resolved sonar or radar maps in which a series of one-dimensional holograms is recorded as a function of the receiving time and coherently...
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3889226 |
Scanned holography by sector scanning
Sector or angular scanning of the source of coherent radiation and/or the receiver provides useful techniques in holography for producing a distortion which can be used to counteract the distortion...
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3887923 |
Radio-frequency holography
A passive radio direction finder monitors wavefronts across an aperture, duces a radio-frequency hologram, and numerically reconstructs the hologram. The direction finder consists of an array of...
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