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| Number | Title | Issue Date |
| 8164983 | Fish finder A method, system, and apparatus are provided for focused ultrasonic acoustic imaging of objects within a body of water. Echo soundings are collected, produced by an ultrasonic transmitter and detected by an ultrasonic receiver. Spatial location information of the tr... | 04/24/2012 |
| 7457197 | Reduction of low frequency vibrational noise in towed arrays Low frequency vibration induced noise is reduced in a towed sonar array of the type comprising a number of oil-filled modules joined end to end with each module housing a plurality of hydrophones by arranging that the signal output from each hydrophone in an array i... | 11/25/2008 |
| 7405999 | Sensor module for trawl The invention relates to a module (100) which is attached to a trawl, and which at least comprises measuring sensors (330) and a power supply unit. (320) The sensors are basically inactive, but can be activated as the need arises to measure diff... | 07/29/2008 |
| 7366056 | Depth sounding by acoustic pingers in a seismic spread An embodiment of a method for conducting a bathymetric survey across a seismic spread includes the steps of emitting a signal from a pinger positioned within the seismic spread, measuring the arrival time of a bottom reflection of the signal at a receiver positioned... | 04/29/2008 |
| 7316196 | Method and apparatus for handling mooring lines Apparatus and methods of monitoring mooring lines of an offshore drilling rig, with the apparatus including a communication system in communication with a global positioning system, providing position coordinates of the apparatus at a first point on the line, and al... | 01/08/2008 |
| 7270214 | Method and apparatus for reducing and extracting wing-tip vortex energy The present invention provides an apparatus and a method for reducing wing-tip vortex energy during seismic exploration. The apparatus includes a vortex concentrator of deployed proximate a tip of a hydrofoil and a vortex reducing device deployed proximate the vorte... | 09/18/2007 |
| 7239958 | Apparatus and method for discerning a driver's intent and for aiding the driver Methods and apparatus are provided for determining the intent of a driver of a motor vehicle in moving a trailer towed by the motor vehicle along a desired path. The method comprises the step of positioning a first reference point at a first location spaced apart fr... | 07/03/2007 |
| 7209408 | Distributed, soft-bodied, towable, active acoustic system A towed active acoustic system includes a plurality of soft-bodied, towable, active acoustic modules. The plurality of active acoustic modules are suspended at various depths within the water column, and allow each active acoustic module to be much smaller than know... | 04/24/2007 |
| 7205934 | Transmit-receive module for a radar A transmit-receive module has a battery energy store with associated circuitry for generating power (RF power) over periods ranging, as desired, from periods as short as small fractions of one second to continuous emissions over prolonged periods. The arrangement be... | 04/17/2007 |
| 7173880 | Arrangement with an acoustic array with a sound velocity meter Arrangement with an acoustic array with a sound velocity meter, suitable to be arranged under water. The acoustic array is able to receive acoustic signals from an underwater device and to provide acoustic array output data to a processing arrangement such that the ... | 02/06/2007 |
| 7072768 | Method for laterally extrapolating soil property data using soil samples and seismic amplitude data within a seismic coverage area A method for laterally extrapolating shallow soil properties using soil samples and seismic amplitude data within a seismic coverage area entails obtaining seismic amplitude data for the seismic coverage area and obtaining average soil property and soil impedance da... | 07/04/2006 |
| 7066754 | Printer cable and associated strain relief collar for creating a ruggedized connection for an electrical terminal of a printer and associated methods therefor An electrical connection for communicating between electrical terminals is provided, as is a collar for retaining the cable of such a connection and associated methods. The connection can include a first modular connector engaged to a first electrical terminal of a ... | 06/27/2006 |
| 7042803 | Marine seismic source towing apparatus and method A marine acoustic source system has relativley densely packed energy sources arrayed in a tandem-like fashion along a horizontal plane. Preferably, a longitudinal axis of each source lies orthogonal to a pre-determined towing direction. The system includes protectiv... | 05/09/2006 |
| 7034327 | Expendable oceanographic digital communications system A bathyphotometer system is described for detecting photoluminescent signals excited by a grid disposed in a marine vehicle. The system uses photodiodes to convert the optical signals into electrical signals which are sampled, integrated and coupled to output termin... | 04/25/2006 |
| 6904222 | Optical fiber splice protection apparatus for use in optical fiber hydrophone array An optical fiber splice protection apparatus that allows optical fiber to be spliced and placed in position on a mandrel in cases of assembling a module or repairing optical fiber that has been broken. The present invention comprises a splice protector affixed to a ... | 06/07/2005 |
| 6901029 | Towed low-frequency underwater detection system The invention relates to low-frequency underwater detection systems comprising a towed linear antenna (12, 13). It consists in producing the transducers of the transmission antenna (12) in the form of flextensional arrays of cylindrical type ( | 05/31/2005 |
| 6738311 | Seabed sonar matrix system A system for sonically probing a seabed comprises at least one row (14) of transducers (22) that each can produce a sonic beam, and at least one sonic detector (24). Each transducer is independently energized to produce a narrow sonic beam (4... | 05/18/2004 |
| 6683819 | Sonar array system The sonar array system includes a receive array of hydrophones and a transmit array of acoustic projectors disposed on a common axis. The sonar array system can be coupled to a ship and deployed and recovered from a single winch and through a single ship ... | 01/27/2004 |
| 6563762 | Termination assembly for disposal between a marine tow cable and an acoustic receiver array A termination assembly for disposal between a marine tow cable and an acoustic receiver array includes a cable sleeve having a grip portion adapted to grip a cable outer jacket, and a collar portion for disposition on a strength member portion of the cabl... | 05/13/2003 |
| 6404701 | Encapsulated volumetric acoustic array in the shape of a towed body An encapsulation assembly includes a housing having a nose end, a tail end, and a body portion between the nose end and the tail end. A plurality of acoustic transducers are positioned within the body portion of the housing, each of the plurality of acous... | 06/11/2002 |
| 6385132 | Seismic sensor shroud package A method of and an apparatus for mounting seismic vibration sensors to a cable designed for use offshore, such that the sensors are optimally coupled to the ocean floor through all cylindrical rotations when the cable has reached the bottom after being sl... | 05/07/2002 |
| 6185154 | Low surface friction acoustic envelope for towed sonar arrays A low friction surface is provided to hose-shaped acoustic envelopes for towed sonar arrays. The low friction surface permits multiple envelopes that are in intimate, parallel contact or that are crossed-over one another, to slide easily relative to one a... | 02/06/2001 |
| 6160756 | Seabed sonar matrix system A system for sonically probing a seabed comprises at least one row of transducers that each can produce a sonic beam, and a corresponding row of sonic detectors. Each transducer is independently energized to produce a narrow sonic beam, with resulting sea... | 12/12/2000 |
| 6111817 | Towed body yaw angle sensor A towed body yaw angle sensor arrangement used to sense the angle between the axis of a tow fish and the flow of water. The water flow vector is used as the reference for correcting towed body yaw so that a magnetic compass in the towed body is aligned wi... | 08/29/2000 |
| 6088296 | Soft-bodied, towable, active acoustic module A soft-bodied, towable, active acoustic module includes a specially formed uspension fixture and a flexible faired body enclosing an active acoustic array. The suspension fixture is a Y-shaped tube having a single forward end and two trailing ends, one for... | 07/11/2000 |
| 6069842 | Method and device for helicopter-borne mine countermeasures The invention relates to underwater mines countermeasures methods and devices that can be employed from a helicopter. It consists in using the body (101) of a known passive heli-winched sonar, fitting to it emitting antennas (105, 106) arranged in this body pa... | 05/30/2000 |
| 6005828 | Acoustic positioning of seismic ocean bottom cable A seismic ocean bottom positioning device include a series of seismic stations spaced apart at a predetermined interval along a cable. Each station includes a hydrophone, a motion sensing device such as a geophone and an acoustic positioning circuit. A pr... | 12/21/1999 |
| 6002644 | Imaging system and associated method for surveying underwater objects A system for surveying an underwater topography includes an ultrasonic sensor array disposable in physical contact with a body of water for generating electrical signals encoding ultrasonic echo responses of underwater objects in the body of water. The se... | 12/14/1999 |
| 5986975 | Drag antenna A drag antenna for a sonar system for detecting and/or locating sources of sound in water includes at least two acoustically sensitive lines positioned side-by-side and laterally spaced apart during a trailing operation. The lines are secured to each othe... | 11/16/1999 |
| 5909408 | Towed acoustic transmitter The invention relates to towed acoustic transmitters forming an underwater vehicle which is itself intended for towing a linear acoustic receiving array (105). It consists in placing the vertical faired acoustic array (303) of such a transmitter at the ve... | 06/01/1999 |
| 5856954 | Process of acoustic emission for sonar A process of acoustic emission for sonar with a separate emission array from the receiving array. The emission array has the shape of a linear acoustic array and can either be towed simultaneously with linear acoustic receiving array or be suspended from ... | 01/05/1999 |
| 5835450 | Lead-in configuration for multiple streamers and telemetry method A system for transmitting signals between a plurality of towed sensor streamers and a seismic vessel, the system comprising: a plurality of seismic streamers, wherein each streamer of the plurality of seismic streamers comprises: a leading end, a trailing... | 11/10/1998 |
| 5781506 | Method and apparatus for frequency filtering using an elastic fluid-filled cylinder A method and system are provided for frequency filtering compressional wave nergy. An elastic cylinder is filled with a fluid that is selected based on a fluid density .rho.i and a dilatational wave phase velocity ci thereof. When the... | 07/14/1998 |
| 5734624 | Wide-band omni telemetry system The present invention comprises a wide-band omni telemetry system adapted r increasing the signal transmission bandwidth of an existing tactical array having a single shared transmission line. In accordance with one embodiment of the invention electronic ... | 03/31/1998 |
| 5596549 | Side look sonar apparatus and method A side look sonar apparatus having a linear array of receiving elements mounted to an underwater platform vehicle which has an aperture with a cross track dimension greater than the along track dimension. The cross track beams are processed to form synthe... | 01/21/1997 |
| 5532979 | Towed array strain-sensing noise canceller Method and apparatus are disclosed for reducing breathing-wave induced no in a liquid-filled elongate hose housing a hydrophone array. The arrangement involves sensing radial strain induced in the hose wall by the breathing waves (created as the hose is ... | 07/02/1996 |
| 5528554 | Linear array lateral motion compensation method A method for compensating for lateral distortion in a moving linear array using a frequency domain beamformer, comprising the steps of measuring the instantaneous lateral distortion of the linear array at discrete points along the array, corresponding to ... | 06/18/1996 |
| 5528555 | System and method for compensating for towed array motion induced errors A system for compensating for noise induced in a sensor data stream from a sensor array towed by a towing device includes a towing device motion data input receives a towed motion data stream representative of towing motion of the towing device. A sensor ... | 06/18/1996 |
| 5373773 | Anti-torpedo stern defense system A stern torpedo defense system uses a pair of passive sonar towed tactical etectors in tandem alignment to detect the presence and trajectory of a stern torpedo attack. The detectors are towed below the wake of a surface ship and include arcuate arrays of ... | 12/20/1994 |
| 5331603 | Magnetic heading sensor alignment and roll reducing device A magnetic heading sensor alignment and roll reducing device is provided. A enerally cylindrical assembly has a first end and a second end. Each end has a plurality of grooves located equiangularly on a circle with the center thereof located at the cylindr... | 07/19/1994 |
