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7548488 |
Airborne acoustic sensor array
Embodiments for determining the bearings to targets from a remote location are disclosed. The apparatus consists of an array of acoustic sensors that is capable of autonomous flight. The array may...
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7391674 |
Methods and systems for determining orientation of seismic cable apparatus
Methods and systems for estimating one or more orientation parameters of a seismic apparatus are described. One method comprises initiating an acoustic signal from an acoustic transmitter in a...
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7307537 |
Identification tag
The invention relates to an identification chip for insertion in an object located in a liquid. The identification chip comprises an acoustic resonator ( 100 ), which exhibits a number of distinct...
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6859359 |
Modular sensor platform
Robot and remote controlled devices have been utilized for information gathering purposes. However these robotic vehicles lack efficiency because they are not capable of operating out of doors or...
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6570817 |
Apparatus for detecting position
An apparatus for detecting the position of an object moveable along a predetermined travel path. The apparatus includes an acoustic signal waveguide, a signal input coupler, at least one signal...
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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...
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6237410 |
Method for controlling the speed of a pump based on measurement of the fluid depth in a well
A method and apparatus for measuring the depth of fluid in a well and for controlling the speed of a pump which pumps fluid out of the well according to the measured depth is disclosed. The depth...
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6097670 |
Method and apparatus for tracking objects underwater
The position of an object is tracked underwater. Prior to tracking, the object is tagged with an acoustic transmitter. It is important that the transmitter emits sound waves having a frequency of...
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5940346 |
Modular robotic platform with acoustic navigation system
A navigation system and method for identifying a position or navigating an autonomous robotic platform within an area is provided including a moveable device having an acoustic transmitter for...
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5903517 |
Moving body control apparatus
The present invention relates to a moving body control apparatus wherein operating control flexibility and system maintainability are improved by carrying out moving body travel control by transfer...
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5790476 |
Methods and systems for locating an underground sewer using a buoy
A first system for locating a portion of an underground sewer includes a buoy which is released into the sewer. The buoy is carried to the portion of the sewer by a flow of fluid therein. An...
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5732043 |
Optimized deterministic bearings only target motion analysis technique
A method for selecting a set of four target bearings from a plurality of bearing measurements to optimize rapidity, accuracy and stability of a target track solution in a bearings-only target...
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5666326 |
Homing device for underwater divers
This invention is in the field of underwater ultrasonic communications systems, more particularly, underwater acoustic homing devices suitable for diver direction finding. This invention utilizes a...
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5627800 |
Method and apparatus for determining position of a moving object in a tank
A method and apparatus for determining position of a vehicle in a tank of fluid. At least one transducer is disposed on the vehicle and a plurality of transducers are disposed on the outside wall...
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5570324 |
Underwater sound localization system
A control system connected to a passive underwater transducer array is located remotely from the array, e.g. above the surface of the water, to localize an underwater source of acoustic energy in a...
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5553498 |
Pipe and duct run locator
An apparatus and method for identifying a conduit at a second location remote from a known first location of the conduit, characterized by a vibration device and means for removably coupling the...
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5526433 |
Tracking platform system
A self-steering platform system incorporates at least three and preferably four microphones circumferentially spaced about the platform which is mounted for movement preferably around two mutually...
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5504477 |
Tracking system
A performer tracking system, and an associated method, for tracking movements of at least one performer upon a stage. A plurality of signal transmitters are positioned about the stage and transmit...
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5490219 |
Noise canceling microphone with visual feedback
Briefly, according to the invention, a noise-cancelling microphone apparatus (400) is disclosed. The microphone (400) comprises a sound transducer (106) for converting sound waves to electrical...
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5452263 |
Method and apparatus for detecting location of a subterranean pipe
A method and apparatus for detecting the location of subterranean pipe includes sensors 24 and 26 which detect seismic energy. A pulsing valve (20) is disposed on one end of a water line (10) to...
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5315917 |
Monoport airgun for seismic exploration having discharge port extending continuously for 360 degree around its axis
A monoport airgun for seismic exploration has a single discharge port extending continuously for 360° around its longitudinal axis. This airgun has a first housing providing a firing chamber...
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5214618 |
Method and arrangement for combating a submerged target object
A method for combating a submerged target object through the intermediary of an active body which is deployable in an airborne mode, and which picks up a sonar contact with the target object from a...
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5099455 |
Passive acoustic aquatic animal finder apparatus and method
Aquatic animal finder apparatus and method include one or more passive transducers for converting sounds, including bio-soundwaves from a living aquatic animal source traveling in a body of water,...
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4980871 |
Ultrasonic tracking system
An ultrasonic tracking system comprising a transmitting unit and a drive unit. The transmitting unit is carried by the subject to be tracked and produces brief, periodic ultrasonic bursts. The...
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4911012 |
Sewer line detection system
A system for detecting the location of an underground portion of a sewer line. A vibration or sound of a predetermined frequency is introduced into an accessible (e.g., above ground) portion of the...
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4815048 |
Dual axis transducer
A dual axis transducer assembly comprises a transducer (20), a yoke (24) which mounts the transducer for oscillating movement about a substantially horizontal axis. A turntable (28) mounts the yoke...
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4779239 |
Sonar transducer system for image formation
A sonar transducer comprising a stack of an even number of antennae with identical linear networks. The stack is driven by a reciprocating rotary movement of low amplitude, with the antennae...
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4594694 |
Sound source searching device
A sound source searching device for searching an objective sound source out of a plurality of sound sources, is disclosed. The device comprises an intensity probe provided with one pair of...
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4577299 |
Acoustic direction finder
An acoustic direction finding method utilizes correlation between the signals of plural sound pickups on a rotating base. As the base rotates the pickups receive signals from a source of sound...
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4509151 |
Marine acoustic analysis system and method
An apparatus for locating, classifying and identifying underwater marine animals by means of the sounds they make includes an elongated submersible array adapted to be towed in various directions....
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4425634 |
Detection system
The present invention is directed to a detection system which forms reception beams successively in a series of angular directions. The detection system comprises receiving means for receiving...
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4350045 |
Apparatus and method for characterizing an acoustic field
An apparatus for and method of characterizing an acoustic field, and particularly of visually characterizing the field. An acoustic receiving transducer means is moved to a plurality of...
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4309576 |
Listening device for localizing underground water leakages
A listening device for pinpointing water leakages, which includes a manually operated rod having a handle at one end for manually positioning of the listening device. An acoustic pick-up apparatus...
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4292679 |
Variable directivity mounting means
Means for mounting a member functioning with a directivity to a mounting station of an associated device or the like. A housing for the member with its functional end surface exposed to the...
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4183009 |
Low frequency detection system
A low frequency detection system including the use of the sloping characteristics of the underwater near shore, the tapered section of ocean above the near shore, and an acoustic array. The...
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4170001 |
Capacitor goniometer tilt compensation for acoustic transducing system
A capacitor goniometer type tilt compensator is provided for the bi-directional elements in a transducer array in which each pair of bi-directional transducers is tilt or twist compensated to make...
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3986161 |
Underwater directional guidance apparatus
Ultrasonic directional guidance apparatus for use by divers underwater includes a pair of compact, self-contained units -- a pinger for generating omnidirectional signal bursts, and a...
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3895188 |
Sound collecting device
A sound accumulation device in which a microphone is mounted at the focus of parabola for movement along the longitudinal axis to receive audio information reflected from the sidewalls of the...
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3838593 |
ACOUSTIC LEAK LOCATION AND DETECTION SYSTEM
A system for locating and detecting acoustic noise sources such as liquid or gas leaks in the presence of conflicting ambient (i.e., background) noise by implementing one point correlation. In a...
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3763465 |
BEARING DEVIATION INDICATOR
The disclosure describes an improved bearing deviation indicator for deteng and tracking noise sources such as, for example, those produced by vehicles. The device comprises a rotatable acoustic...
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3736557 |
ACOUSTIC LOCATOR WITH ARRAY OF MICROPHONES
Acoustic locator comprising an array of microphones located on the outer ends of radial arms extending from a central support. The inner ends of the arms are pivotally connected to a housing...
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3731264 |
APPARATUS FOR DETERMINING THE POSITION OF A SURFACE VESSEL WITH RESPECT TO A SIGNAL SOURCE
Apparatus for determining the position in azimuth of a surface vessel, with espect to an underwater sonar signal source, irrespective of the motion of the surface vessel, comprising a hydrophone,...
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3728619 |
ACOUSTICAL CORONA LOCATOR HAVING ROTATABLE AND PIVOTABLE TRANSDUCERS
Acoustical corona locating apparatus for use in determining the position of a corona discharge within the casing of a power transformer. Transducer apparatus, which contains at least two...
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3721950 |
RESPONSIVE NAVIGATION BEACON
A navigation beacon is provided which does not emit a continuous signal. Instead, it has a pair of responsive devices rotating at different angular velocities related in the ratio 2:1. The...
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3614723 |
AIMING ARRANGEMENT
A gun turret of a tank, equipped with acoustic and optical aiming devices. The acoustic device is used to bring the gun to bear in the general direction of a target from which a noise comes,...
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3602877 |
UNDERWATER POSITION DETERMINING SYSTEM
Apparatus for determining and displaying the angular position of a water craft relative to a fixed underwater location, and a method for determining distances therebetween if the depth of the fixed...
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3587038 |
ULTRASONIC HOMING BEACON AND COMMUNICATION EQUIPMENT FOR UNDERWATER SWIMMERS
This is a homing system for guiding underwater swimmers to a moored ultrasonic beacon which sends out omnidirectional signals. The swimmer carries an ultrasonic compass comprising a compact housing...
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3489993 |
ULTRASONIC HOMING BEACON AND COMMUNICATION EQUIPMENT FOR UNDERWATER SWIMMERS
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3430233 |
APPARATUS FOR DETECTING THE PRESENCE AND LOCATION OF GROUND ACOUSTIC INFORMATION FROM AN AIRCRAFT
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3389373 |
Hemispherical gas filled shell for acoustical time delay action
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