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7430152 |
System and method of operation thereof for increasing acoustic bandwidth of transmitting devices
Disclosed is a system, and a method of operation thereof, which improves the RF link employed between a transmitting sonobuoy and an associated receiving aircraft. The sonobuoy receives acoustic...
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7184363 |
Buoyant container with wave generated power production
An apparatus designed to float on or in a liquid has at least two buoyant members. The apparatus utilizes relative motion between the buoyant members to generate power, and the buoyant members are...
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6859419 |
Laser-based acousto-optic uplink communications technique
An apparatus for enabling acousto-optic communication comprising an in-water platform comprising means for emitting an acoustic signal to an acousto-optic interaction zone, an in-air platform...
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6813218 |
Buoyant device for bi-directional acousto-optic signal transfer across the air-water interface
A buoy system bi-directionally communicates in-air and underwater. A buoy having a shell to float on water has an upper portion in air and a lower portion in water. An array of acoustic transducers...
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6711095 |
Expenable/recoverable voice and data communications system buoy
An untethered communications buoy system has an untethered buoy freely floating on the surface of water to not compromise the location of the submersible. The submersible has a cavity containing a...
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6693847 |
Buoy for fish finding method and system
A fishing system buoy has a watertight bulbous shell housing an electronic load and with a center of mass located within a lower half of the shell. The load includes sonar operatively coupled via a...
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6687186 |
Sonobuoy deployment method
A method of deploying sonobouys includes providing an airborne aircraft having a computer and a plurality of sonobouys; making a contact with a submarine; determining a position of the submarine, a...
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6597631 |
Compact expandable platform using material memory for sensor deployment
An expandable platform for deploying sensors in a medium includes a housing and a structural member disposed inside the housing. A releasable restraint is connected to the structural member....
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6400645 |
Sonobuoy apparatus
Sonobuoy apparatus which fits into an A sized canister for use in the water environment. The apparatus includes an array of telescopic arms connected by hinges to a housing which contains receiver...
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6380889 |
Reconnaissance sonde
A reconnaissance sonde to be dropped and erected in an area for wirelessly transmitting data to a data processing apparatus. The sonde includes a housing having top and bottom portions; a parachute...
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6307810 |
Underwater launched acoustic warning assembly
An acoustic warning assembly capable of being launched from an underwater vehicle while being underwater. The acoustic warning assembly includes an acoustosensitive member for collecting...
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6220168 |
Underwater intelligence gathering weapon system
An underwater intelligence gathering weapon system accurately places a weapon underwater and then communicates therewith from other platform(s). The weapon is equipped to maneuver through the air...
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6089345 |
Elastic wave exploration tool for wells
A well tool in accordance with the invention comprises an attenuation device which attenuates tube waves associated with an elastic wave emission and/or reception set (1, 12). The attenuation...
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6058071 |
Magneto-inductive submarine communications system and buoy
A magneto-inductive submarine communication system and buoy provide two-way signal communications between a submerged craft, such as a submarine and remote command station that may be airborne, on...
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RE36643 |
Buoyed sensor array communications system
A buoyed sensor array communications system comprises multiple sensor syss electrically connected to a signal transmission line which are positioned at predetermined locations along the signal...
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5973994 |
Surface launched sonobuoy
A sonobuoy device for tracking and targeting submarines. The sonobuoy dev comprises a sonobuoy having aft and forward sections interconnected with each other, fin means mounted on the aft section...
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5963506 |
Low flow noise sonobuoy suspension system
A low flow noise sonobuoy suspension system having a surface float, a sussion cable having a compliant portion, a bridle, a hydrophone, a mechanical cable, a terminal weight, and a drogue. The...
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5742645 |
Method of digital demodulation of a composite signal
A method for digitally demodulating a complex modulation signal and allowing different parameters to be transmitted thereby. The input signal is baseband filtered and a complex demodulation is...
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5691957 |
Ocean acoustic tomography
An acoustic tomography telemetry system and method allowing spatially averaged ocean temperatures to be measured in real-time. The system includes autonomous acoustic sources mounted on subsurface...
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5224074 |
Sonobuoy for forming virtual vertical sensing arrays
A sonobuoy for forming a plurality of virtual vertical arrays, the sonobuoy aving means for receiving and expelling water to cause said sonobuoy automatically to descend and rise in a water...
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5175708 |
Battery powdered acoustic transponder for use in underwater environment
An acoustic transponder device includes waterproof housing that accepts a battery pack with a water displacing connection placing the housing and battery pack in communication. The housing carries...
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5117396 |
Large, air deployable, volumetric hydrophone array
An air deployable, volumetric hydrophone array uses three horizontal booms adiating from a central hub suspended at the array operating depth. Loose lines of hydrophones are hung from pairs of...
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5065370 |
Programmable pulse shaper for sonobouy apparatus
This invention discloses electronic circuit that can be either embedded in n oceanographic sonobuoy housing or used as stand-alone equipment and which establishes and generates sonar signals of a...
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5060206 |
Marine acoustic aerobuoy and method of operation
A marine acoustic detector for use in identifying a characteristic airborne sound pressure field generated by a propeller-driven aircraft including a surface-buoyed resonator chamber tuned to the...
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5056065 |
System for deploying horizontal line array
A sonobuoy system and method for deploying an array of transducers in a substantially horizontal line at a desired depth below the surface of a body of water. The trailing end of the array is...
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5040157 |
Expendable virtual vertical sensing array
A method and apparatus of determining the range and depth of a far field underwater target is provided. A multi-sensor device is released into the water from a surface ship or other deploying...
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5022012 |
Acoustic sensing arrangements
An underwater sensing arrangement in which hydrophones are embodied in horizontally disposed arms of a hydrophone support structure adaptive to be suspended below the surface of the water and in...
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5020032 |
Sonobuoy suspension system
A sonobuoy suspension system is disclosed wherein a spring motor having a substantially constant output torque is mounted within an upper sonobouy unit secured to a buoyant flotation member. Formed...
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5016227 |
Top mounted buoy signaling device
A top mounted buoy signaling device for marine navigation which is selectively activated in response to a coded address signal. The buoy signaling device includes a buoy having a top mounted...
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4962488 |
Technique for surface to surface communications using high frequency radio with low probability of intercept signaling
A high frequency (HF) communications buoy that employs HF surface wave, and sky wave, communication and spread spectrum modulation to suppress multipath fading and to decrease the undesired...
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4924445 |
Sonobuoy cable pack
A sonobuoy comprising: a sonobuoy body; a main cable having a proximal end secured to the body and a distal end; a spool on which the cable is wound from the distal end toward the proximal end; and...
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4903243 |
Marine transponder system
A marine transponder system which is selectively activated to produce a predetermined signal pattern of light/sound/radio transmissions for maritime devices and structures such as navigational...
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4901287 |
Underwater sonar array
A sonar array connected to a data unit includes a substantial number of hydrophone units distributed along a small diameter cable having a substantial number of connecting wires, a center strength...
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4890334 |
Buoy structure for detecting fishing grounds
A buoy for detecting fishing grounds, mainly comprised of an upper body, a lower body, a water-proof ring, a FM antenna, a PC Board, a pad, a rechargeable battery, an insulator, an ultrasonic wave...
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4879694 |
Difar demultiplexer circuit
A demultiplexer circuit responsive to a composite input signal from a sonobouy. The invention circuit has a filter and comparator means responsive to the composite signal for providing a filtered...
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4868792 |
Difar demultiplexer test circuit
A demultiplexer test circuit having a signal source summing means responsive to a selected target angle theta for adding a first independent noise signal to an input signal to provide a composite...
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4861297 |
Releasable airborne buoy particularly for undersea listening
A buoy released from an aircraft for carrying out under water listening includes a balloon fixed to a body by way of a set of halyards extending from the top to the base of the balloon and fixed...
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RE33014 |
Cable deployment unit
In a system for deploying an immersible unit by a cable from a floating platform, the cable deploys freely from a cable deployment unit until a comparator unit, which provides for variable depth...
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4853900 |
Stabilized suspension for immersible apparatus
Motion of an instrument suspension cable assembly is attenuated in a liquid aving flow fields and surface swells. Strumming which causes vibratory motion is precluded by enclosing the cable...
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4805160 |
Data transmission method for ocean acoustic tomography
The present invention enables tomography data in the sea to be collected and transmitted via an artificial satellite to a ground station. Accordingly, data on the Doppler phenomenon and shift of a...
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4777627 |
Extendible sonobuoy apparatus
A sonobuoy has several components slidably mounted in an elongated tube. The components are longitudinally stacked one above the other at the lower end of the tube when the sonobuoy is in a...
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4751685 |
Current feedback driver and method
A cable driver and method for an underwater telemetry transmitter puts a signal on a single insulated wire forming part of a cable pack in which the wire is coiled and which is connected to a...
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4747084 |
Energy generators initiated by sea water for acoustic buoys and acoustic buoys equipped with such generators
An energy generator of a Sonobuoy is overlapped by a sleeve or chimney guiding gas bubbles given off by the generator to a sufficient distance from an electro-acoustic transducer of the Sonobuoy,...
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4725988 |
System for deploying an array of sonar projectors
A system for deploying an array of sonar projector transducers includes a housing in which a plurality of disk shaped projectors are stacked, a pair of small diameter cables are reeled from a...
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4691305 |
Automatic attenuator for sonobuoys
An automatic attenuator for use in Sonobuoy Missile Impact Location System (SMILS) sonobuoys to separate re-entry which impact signatures from other acoustic phenomena is disclosed. The attenuator...
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H000329 |
Aerodynamic housing
An aerodynamic housing is disclosed for stabilizing the free-fall descent an article, particularly a sonobuoy, launched from an aircraft. The housing is cylindrically-configured and includes a tail...
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H000280 |
Connector assembly
A connector assembly such that when a first half of the connector receives a second half, a vent hole is defined therethrough. With the second half disconnected and a third half coupled to the...
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4660182 |
Programmable multichannel sonobuoy transmitter
A programmable phase-locked loop frequency synthesizer for a multi-channel onobuoy transmitter is disclosed. The phase-locked loop, including a counter/divider utilizing variable modulus prescaling...
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4639900 |
Method and a system for monitoring a sea area
Three or more listening devices (A1, A2, A3) are dispersed over the water area where the location of a sound source is to be determined, and transmit radio signals over respective channels to a...
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4463451 |
System for seismic digital data acquisition over water covered areas
A seismic data acquisition system for use in shallow water covered areas comprises a flotation device which serves also to house the electronic components; anchoring device with mechanical filter...
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