With Towing Patents (Class 367/130)
  • Patent number: 10656293
    Abstract: This invention provides a system apparatus and method for ship-towed deployment of a non-linear volumetric array of hydrophones, allowing line-intersect or line-transect sampling of marine mammal populations through passive acoustic monitoring, enabling unambiguous real-time three-dimensional localization of single sounds received through a low-cost, modular, robust, stable, small, light, neutrally to slightly negatively buoyant volumetric array having low self-noise and low flow noise, that avoids putting high tension on the tow cable and that is compatible with standard hydrophones, instrumentation, cabling, and analytical software.
    Type: Grant
    Filed: January 3, 2019
    Date of Patent: May 19, 2020
    Assignee: Proteus Technologies
    Inventors: Sean Robert Griffin, Bradley Bruce Lingsch
  • Patent number: 10460045
    Abstract: A drifting particle simulator buoy system for a stormwater discharge plume which includes a GPS unit for tracking the buoy GPS location at the surface of the plume and a drogue/winch unit including a drogue chute and winch package which is lowered to the seafloor at a controlled descent rate which is comparable to the descent rate of certain size sediment particles of interest within the stormwater discharge plume. The drogue chute controls lateral drift with the underwater current at approximately the same velocity of the sediment particles of interest. A control unit controls the drogue/winch unit, including controlling the speed of the chute/winch unit to mimic the settling rate of the sediment particles of interest. A bottom detection sensor determines the GPS location where the chute/winch package reaches the seafloor and determining the depositional footprint of contamination at the determined GPS location.
    Type: Grant
    Filed: February 18, 2015
    Date of Patent: October 29, 2019
    Assignee: United States of America as represented by Secretary of the Navy
    Inventors: David Bartholomew Chadwick, Jonathon Keith Oiler, Matthew Joseph Nicholson
  • Patent number: 10302429
    Abstract: An apparatus for correcting for deviation of an ambient magnetic field direction from a reference direction in a marine environment includes: an instrument assembly vessel configured to move through the marine environment; an inertial reference direction device disposed on the instrument assembly vessel and configured to measure a deviation of an aiming direction of the instrument assembly vessel from the reference direction; a reference magnetic compass disposed on the instrument assembly vessel and configured to measure a direction of the ambient magnetic field direction with respect to the aiming direction of the instrument assembly vessel and to transmit the measured direction; and a processor configured to receive the measured deviation and the measured direction and to calculate the deviation of the ambient magnetic field direction from the reference direction using the received measured deviation and direction.
    Type: Grant
    Filed: January 22, 2015
    Date of Patent: May 28, 2019
    Assignee: CONOCOPHILLIPS COMPANY
    Inventors: Peter M. Eick, Joel D. Brewer, Tony Maultsby
  • Patent number: 10209379
    Abstract: This invention provides a system apparatus and method for ship-towed deployment of a non-linear volumetric array of hydrophones, allowing line-intersect or line-transect sampling of marine mammal populations through passive acoustic monitoring, enabling unambiguous real-time three-dimensional localization of single sounds received through a low-cost, modular, robust, stable, small, light, neutrally to slightly negatively buoyant volumetric array having low self-noise and low flow noise, that avoids putting high tension on the tow cable and that is compatible with standard hydrophones, instrumentation, cabling, and analytical software.
    Type: Grant
    Filed: April 27, 2016
    Date of Patent: February 19, 2019
    Assignee: Proteus Technologies
    Inventors: Sean Robert Griffin, Bradley Bruce Lingsch
  • Patent number: 10155569
    Abstract: A swivel (100) for a mooring line comprises a first element (110) with a first line coupler (111) and a second element (112) with a second line coupler (113). The first element (110) and the second element (112) are rotatable relative to each other. An electric power generator (120) converts a relative rotation between the first element (110) and the second element (112) into electric power. In use, the line couplers (111, 113) are attached to separate segments of the mooring line. A pull F applied to or relieved from the mooring line causes the relative rotation. The swivel preferably contains a battery and a control unit, and may supply power to one or more sensors (130) built into or external to the swivel (100). A system for monitoring a mooring arrangement is also disclosed.
    Type: Grant
    Filed: August 18, 2015
    Date of Patent: December 18, 2018
    Assignee: ABYSSUS MARINE SERVICES AS
    Inventor: Tjøm J. Kyrre
  • Patent number: 10094940
    Abstract: A method for localizing a marine animal in an underwater environment implemented by a passive acoustic monitoring (PAM) system. The passive acoustic monitoring system includes network of acoustic sensors adapted to carry out measurements of acoustic signals. The method includes: obtaining, from the network of acoustic sensors, measured data of an acoustic signal emitted by a marine animal; defining a space of dimensional representation of the underwater environment discretized in a plurality of predefined cells, for each cell of a predefined set, obtaining an error defined as a value of a cost function for the cell, the cost function giving a deviation between: at least some of the measured data; and corresponding theoretical data obtained by assuming the marine animal is located in the cell, the errors obtained for the predefined set of cells enabling to obtain at least one piece of information about localization of the marine animal.
    Type: Grant
    Filed: April 10, 2017
    Date of Patent: October 9, 2018
    Assignee: SERCEL
    Inventors: Christophe L'Her, Simon Vallez, Veronique L'Her Marrec
  • Patent number: 9829565
    Abstract: A method using a tow body and sensor array for locating an underwater location beacon is provided. The steps of the method are moving the body and array in a direction of motion; orientating the array orthogonal to the direction of motion; beamforming acoustic conical beams from the array onto a seafloor; detecting a time series of acoustic data channels from the beacon; converting the data channels into spatial beams of acoustic frequency; determining if a signal of the underwater location beacon is present from each spatial beam; calculating likelihood functions for locations of the beacon to represent an area of the seafloor from which the signal of the underwater location beacon is to have originated; accumulating likelihood functions for the location of the underwater location beacon over the course of a search pattern; and producing a grid for a beacon location based on the likelihood functions.
    Type: Grant
    Filed: December 23, 2016
    Date of Patent: November 28, 2017
    Assignee: The United States of America as represneted by the Secretary of the Navy
    Inventor: Steven E Crocker
  • Patent number: 9810678
    Abstract: A drifting buoy sampler system for a stormwater discharge plume formed from stormwater discharged into coastal waters. The system compresan electronics sampling pod for collecting integrated water samples within the stormwater plume as the buoy system drifts with the stormwater plume near the water surface as the plume travels out to sea. The pod includes a watertight section including a GPS/radio module for providing GPS (geo-position) location information and a processor for monitoring and controlling the sampling rate, a pump module and a battery module; a passive sampler bag for collecting the integrated water samples; a free flooding section including a composite sample bag module such that the pump module pumps collected samples from the passive sampler bag to the composite sample bag module at a predetermined sampling rate and a ballast module for providing ballast to the system when drifting within the plume.
    Type: Grant
    Filed: February 9, 2015
    Date of Patent: November 7, 2017
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: David Bartholomew Chadwick, Jonathon Keith Oiler, Matthew Joseph Nicholson
  • Patent number: 9784860
    Abstract: An underwater seismic system for reducing noise due to ghost reflections or motion through the water from seismic signals. The system includes two motion sensors. One sensor has a first response and is sensitive to platform-motion-induced noise as well as to acoustic waves. The other sensor has a different construction that isolates it from the acoustic waves so that its response is mainly to motion noise. The outputs of the two sensor responses are combined to remove the effects of motion noise. When further combined with a hydrophone signal, noise due to ghost reflections is reduced.
    Type: Grant
    Filed: May 12, 2014
    Date of Patent: October 10, 2017
    Assignee: Ion Geophysical Corporation
    Inventors: Dale J. Lambert, Andre′ W. Olivier, Robert E. Rouquette
  • Patent number: 9604701
    Abstract: A marine seismic surveying apparatus for obstructed waters includes a deployed device and a buoy. The deployed device is disposed at an end of a streamer and is towed below a surface of water. The buoy extends from the end of the streamer to the water's surface. A coupling connects the buoy to the end of the streamer and is breakable due to tension from the buoy obstructed at the surface of the water. A receiver associated with the buoy obtains location information via the buoy at the water's surface. The deployed device can reckon its location with an inertial navigation system in place of location information obtained with the buoy's receiver. Also, the buoy can be deployed at the surface of the water, and more than one buoy can be available for deployment should one be lost.
    Type: Grant
    Filed: October 15, 2013
    Date of Patent: March 28, 2017
    Assignee: ION Geophysical Corporation
    Inventors: Joseph R. Gagliardi, Shawn Rice, Curt Schneider, Jeffrey W. Cunkelman, Timothy A. Dudley, Dale Lambert, Mike Burnham
  • Patent number: 9322946
    Abstract: A method and apparatus are provided for steering a first acoustic linear antenna belonging to a plurality of acoustic linear antennas towed by a vessel. A plurality of navigation control devices are arranged along the plurality of linear antennas in order to act at least laterally on the position of the linear antennas. At least one of the navigation control devices arranged along the first acoustic linear antenna performs steps of: obtaining a local measurement of a feather angle or of a parameter linked to the feather angle, the local measurement being associated with the at least one of the navigation control devices arranged along the first acoustic linear antenna; computing a lateral force, as a function of the obtained local measurement; and applying the computed lateral force.
    Type: Grant
    Filed: July 24, 2013
    Date of Patent: April 26, 2016
    Assignee: SERCEL
    Inventors: Thierry Roger, Gaetan Mellier, Christophe L'Her
  • Patent number: 9310503
    Abstract: This invention discloses methods of processing data using a computer to separate out geophysical exploration response at receivers corresponding to one source among many sources by determining at least one spatio-temporal variant directional propagation attribute of the responses at receivers corresponding to the one source and by decomposition or filtering process using the determined attribute.
    Type: Grant
    Filed: October 18, 2010
    Date of Patent: April 12, 2016
    Assignee: WESTERNGECO L.L.C.
    Inventors: Susanne Rentsch, Wouter Gerrit Brouwer
  • Patent number: 9078055
    Abstract: A scheme for localizing a wireless user equipment (UE) device's relative position with respect to a spatial configuration based on audio signatures received via a multi-channel audio system, e.g., an audio system of a vehicle or home entertainment system. The wireless UE device is configured to capture the audio signatures from a head unit that are placed in an out-of-hearing band, wherein the audio signatures comprise a single beep per channel that is separately detectable and are simultaneously transmitted by the head unit to the speaker channels. The wireless UE device includes a persistent memory module having program instructions for processing the captured signal including the out-of-band signatures in order to compute time delays. A localization module is configured to estimate the wireless UE device's relative position based on the time delays associated with respective speaker channels.
    Type: Grant
    Filed: September 17, 2012
    Date of Patent: July 7, 2015
    Assignee: BlackBerry Limited
    Inventors: Nam Nguyen, Sagar Dhakal
  • Patent number: 9010484
    Abstract: A seismic source array includes a first source and a second source. The first source has a first spectral output and the second source has a second spectral output different than the first spectral output. The first source has a first total volume different than a second total volume of the second source.
    Type: Grant
    Filed: June 12, 2013
    Date of Patent: April 21, 2015
    Assignee: WesternGeco L.L.C.
    Inventors: Emmanuel Coste, Claudio Bagaini, Robert Montgomery Laws, Jon-Fredrik Hopperstad
  • Patent number: 8867305
    Abstract: A method of assisting the deployment/retrieval of linear acoustic antennas towed by a vessel, said linear antennas each having geophysical data sensors, means for measuring the distance of at least one adjacent linear antenna, during the course of which at least one of said linear acoustic antennas has at least longitudinal mobility in relation to said vessel, including: at least one phase for configuring cells (Cn) each defined by a central position corresponding to a distance-measuring means (T), and by at least one peripheral position corresponding to another distance-measuring means (T) in proximity to said distance-measuring means (T) for said central position, reference distances between said central positions and said peripheral positions being predetermined; and at least one phase for controlling said central and peripheral positions with respect to said reference distances, by establishing communication between at least some of said distance-measuring means (T).
    Type: Grant
    Filed: June 5, 2008
    Date of Patent: October 21, 2014
    Assignee: Sercel
    Inventors: Gaëtan Mellier, Gilles Poete
  • Patent number: 8750077
    Abstract: An acoustic ranging system and method of use is provided that measures the magnitude of the separation of a pair of towed acoustic line arrays at a discrete point along the length of each array. One array acts as the measurement source, while the other array acts as a frequency-shifted echo repeater. The source array incorporates one sonar transmitter and two sonar receivers. The system further includes a configurable frequency shifter that enables one measurement source to make measurements with multiple repeater arrays.
    Type: Grant
    Filed: June 25, 2012
    Date of Patent: June 10, 2014
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Michael J. Obara, Timothy B. Straw
  • Patent number: 8605551
    Abstract: A method of obtaining information about the positions of sources in a marine seismic source array, comprises: determining respective notional signatures for m selected seismic sources, where m<n, where n is the number of sources of the array actuated to generate an output; and obtaining information about the travel between one of the m selected seismic sources and one of the n?m unselected seismic sources from the determined notional signatures. The m seismic sources are selected as sources whose positions, relative to one another, are expected to be close to their nominal positions. The effect of the n?m unselected seismic sources is ignored in the calculation of the nominal signatures for the m sources, and this gives rise to anomalies in the nominal signatures for the m sources. The determined travel time may be converted to a distance, so that information about the positions of the n?m unselected seismic sources may be obtained from the anomalies.
    Type: Grant
    Filed: May 12, 2009
    Date of Patent: December 10, 2013
    Assignee: WesternGeco L.L.C.
    Inventor: Jon-Fredrik Hopperstad
  • Patent number: 8325559
    Abstract: A system and method of processing seismic data obtained using a plurality of towed single-component receivers in a marine environment is described, the towed single-component receivers configured to measure compressional P waves. The method comprises retrieving seismic data from a storage device, the seismic data comprising P-P data and shear mode data, wherein the P-P data and shear mode data were both received at the towed single-component receivers configured to measure compressional P waves to generate the seismic data. The method further comprises processing the seismic data to extract SV-P shear mode data and generating shear mode image data based on the extracted shear mode data.
    Type: Grant
    Filed: March 6, 2012
    Date of Patent: December 4, 2012
    Assignee: Board of Regents of the University of Texas System
    Inventor: Bob A. Hardage
  • Patent number: 8300497
    Abstract: A method for reducing noise in a towed acoustic array includes providing a towed array having a length, diameter, frequency range and tow speed. The relationship between tension in the towed array and wall pressure fluctuation spectral levels is determined. Wall pressure fluctuation spectral levels are related to the noise in the array. An optimal towed array tension is calculated using the determined relationship. Tension is increased to the optimal towed array tension by either provided additional towed array hose or a drogue at the end of the towed array.
    Type: Grant
    Filed: March 22, 2010
    Date of Patent: October 30, 2012
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: William L. Keith, Kimberly M. Cipolla
  • Patent number: 8045419
    Abstract: The invention as disclosed is a method for mitigating spatial aliasing that takes advantage of the forward motion of towed array elements to overcome the frequency constraints imposed on beam forming by the spatial separation of the array elements. The method employs the motion of a towed array of hydrophones to generate at least one synthetic array element to compensate for spatial under sampling.
    Type: Grant
    Filed: October 15, 2009
    Date of Patent: October 25, 2011
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Mary H. Johnson
  • Patent number: 7961549
    Abstract: A method and apparatus for acquiring seismic signals from beneath a salt region in the earth. In one embodiment, the method includes tuning an air gun array to a first bubble oscillation; towing the air gun array in the water at a depth of at least 10 meters, in which the air gun array has a total volume in a range of about 6780 cubic inches to about 10,170 cubic inches; directing acoustic signals with the air gun array down through the water into the earth beneath the salt region; towing one or more seismic streamers in the water at one or more depths, in which at least one of the depths is at least 10 meters, in which each streamer comprises a plurality of hydrophones disposed therealong; and recording with the hydrophones seismic signals reflected from strata in the earth beneath the salt region.
    Type: Grant
    Filed: June 16, 2004
    Date of Patent: June 14, 2011
    Assignee: WesternGeco L.L.C.
    Inventors: Nicolae Moldoveanu, Philip A. F. Christie, Mark Egan
  • Patent number: 7881156
    Abstract: A towed array is provided with hot-film sensors and anemometer circuitry to calculate the angle of inclination of the towed array in real time during deployment of the towed array in a sea water environment. The hot-film sensors are arranged in pairs along the length of the towed array to increase the sensitivity of the inclination angle determinations and are located flush with an exterior surface of the towed array to minimize interference with the operation of the towed array. The pairs of hot-film sensors determine the local shear stresses on the towed array, and these measurements are converted to inclination angles using an empirically derived look-up table.
    Type: Grant
    Filed: July 9, 2010
    Date of Patent: February 1, 2011
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: William L. Keith, Kimberly M. Cipolla
  • Patent number: 7850625
    Abstract: A method for early detection of a pregnancy complication, including touching a position sensor to a point on a fetal presenting part of a fetus in a mother, and capturing a position of the position sensor, touching the position sensor to a set of points on the mother and capturing the position of the position sensor at each point, and detecting a pregnancy complication sign based upon a predefined criterion for said pregnancy complication. Methods and apparatus are provided for identifying the BPD pattern in an ultrasound image, for determining characteristics of body parts outside of a pelvic region, for BPD reconstruction and for an adapter for a position sensor are also described among other embodiments.
    Type: Grant
    Filed: August 6, 2004
    Date of Patent: December 14, 2010
    Assignee: Trig Medical Ltd.
    Inventors: Yoav Paltieli, Octavian Soldea, Ran Bar-Sella, Gal Ben-David
  • Patent number: 7806825
    Abstract: A signal processing utility is disclosed involving time-to-frequency domain transforms for applications including medical diagnostic signal processing. Such transforms can be used to define a continuous spectral density function or other spectral density function including nonzero values at irregularly spaced frequency intervals. The invention thereby enables more accurate representation of certain real spectra and reduced spectral broadening. The utility also accounts for digitization errors associated with analog-to-digital conversion. The invention has particular advantages with respect to medical contexts where the received signal has a changing spectral content as a result of interaction of an interrogating signal with moving physiological material such as blood flowing through an artery.
    Type: Grant
    Filed: November 14, 2003
    Date of Patent: October 5, 2010
    Assignee: Team Medical LLC
    Inventor: Warren P. Heim
  • Patent number: 7736312
    Abstract: An acoustic monitoring system that is able to verify the success or failure of the positional adjustment of a valve without the need for additional energy during non-invasive reprogramming is provided. The acoustic monitoring system includes a programmer for generating a sequence of commands to adjust the valve mechanism, and for receiving acoustic signals for analysis, a transmitter to implement the command and adjust the valve, and a sensor for detecting an acoustic signal generated from the valve during execution of the commands. A method for using the acoustic monitoring system is also provided.
    Type: Grant
    Filed: January 22, 2004
    Date of Patent: June 15, 2010
    Assignee: Codman & Shurtleff, Inc.
    Inventors: Terri K. Taylor, Meir Rosenberg, Rainuka Gupta, Stephen Ferrer Wilson, Pierre S. Ostiguy, Bertil Romner, Alan J. Dextradeur
  • Publication number: 20100014385
    Abstract: A sonar system includes at least one transmitter and one flexible antenna including a plurality of sections articulated one after the other, each section being provided with at least one acoustic receiver. The system is equipped with positioning elements making it possible to determine the instantaneous position of each of the receivers, and calculation elements making it possible to reconstruct an image of the seabed by taking account of the instantaneous micromovements of each of the receivers.
    Type: Application
    Filed: September 7, 2007
    Publication date: January 21, 2010
    Applicant: IXSEA
    Inventors: Frederic Jean, Yann Cottreau
  • Patent number: 7599253
    Abstract: The invention as disclosed is of a combined acoustic pressure and acoustic vector sensor array, where multiple acoustic pressure sensors are integrated with an acoustic vector sensor in a towed array as a means of resolving the left-right ambiguity of the multiple acoustic pressure sensors.
    Type: Grant
    Filed: July 24, 2008
    Date of Patent: October 6, 2009
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Dehua Huang
  • Patent number: 7518951
    Abstract: Systems and methods for determining position of one or more seismic streamers are disclosed. One system embodiment includes a seismic streamer towed by a towing vessel at a first depth; at least one positioning streamer towed by the towing vessel at a second depth different than the first depth; and an acoustic ranging system between the seismic and positioning streamers It is emphasized that this abstract is provided to comply with the rules requiring an abstract, which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims. 37 CFR 1.72(b).
    Type: Grant
    Filed: March 22, 2005
    Date of Patent: April 14, 2009
    Assignee: WesternGeco L.L.C.
    Inventors: Stig Solheim, Kenneth E. Welker
  • Patent number: 7491169
    Abstract: A process and apparatus for measuring pressure buildup in a body compartment that encases muscular tissue. The method includes assessing the body compartment configuration and identifying the effect of pulsatible components on compartment dimensions and muscle tissue characteristics. This process is used in preventing tissue necrosis, and in decisions of whether to perform surgery on the body compartment for prevention of Compartment Syndrome. An apparatus is used for measuring pressure build-up in the body compartment having components for imparting ultrasonic waves such as a transducer, placing the transducer to impart the ultrasonic waves, capturing the imparted ultrasonic waves, mathematically manipulating the captured ultrasonic waves and categorizing pressure build-up in the body compartment from the mathematical manipulations.
    Type: Grant
    Filed: March 22, 2004
    Date of Patent: February 17, 2009
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: William T. Yost, Toshiaki Ueno, Alan R. Hargens
  • Patent number: 7417924
    Abstract: Apparatus, systems and methods for calculating position of marine seismic acoustic receivers, and for estimating sound velocity profile of a fluid, are disclosed. One position calculation system includes a vessel, two or more vessel hull-mounted transmitters, a plurality of acoustic receivers on a cable being deployed from the vessel into the fluid, and a calculation unit. The calculation unit may be adapted to calculate position of the receivers, and may be used in calculating the sound velocity profile in the fluid and correcting raw seismic data. It is emphasized that this abstract is provided to comply with the rules requiring an abstract, which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims. 37 CFR 1.72(b).
    Type: Grant
    Filed: April 26, 2005
    Date of Patent: August 26, 2008
    Assignee: WesternGeco L.L.C.
    Inventors: Erk Vigen, Svein Arne Frivik, Kambiz Iranpour, Kenneth Welker
  • Patent number: 7376045
    Abstract: A system comprises a plurality of acoustic transmitters, mounted inside the streamers, adapted to transmit broadband signals having low cross-correlation between the signals of different transmitters; a plurality of acoustic receivers, mounted inside the streamers, adapted to receive the signals from the transmitters; at least one processor adapted to cross-correlate the signals received at the receivers with copies of transmitter signals to determine identities of the transmitters of the received signals and to determine travel times of the received signals; and a main processor adapted to convert the travel times to distances between the identified transmitters and the receivers and to determine relative positions of the streamers from the distances.
    Type: Grant
    Filed: October 21, 2005
    Date of Patent: May 20, 2008
    Assignee: PGS Geophysical AS
    Inventors: Jon Falkenberg, Nils Lunde, Per Birger Gunnarsson, Nils Gunnar Olof Kröling, Stig Rune Lennart Tenghamn
  • Patent number: 7366056
    Abstract: 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 within the seismic spread, measuring the arrival time of a direct arrival of the signal at the receiver, and determining the water depth utilizing the measured arrival times of the signal.
    Type: Grant
    Filed: July 7, 2006
    Date of Patent: April 29, 2008
    Assignee: WesternGeco L.L.C.
    Inventors: Svein Arne Frivik, Leendert Combee
  • Patent number: 7239958
    Abstract: 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 from the motor vehicle and sequentially positioning a second reference point at a plurality of way points along the desired point. A signal relative to the motor vehicle, the first reference point, and the plurality of way points is transmitted as the second reference point is positioned at each of the way points. The transmitted signals corresponding to each of the way points are received and are used to determine the position of the plurality of way points relative to the motor vehicle by a process of triangulation. The position of the plurality of way points indicate positions along the desired path.
    Type: Grant
    Filed: December 18, 2003
    Date of Patent: July 3, 2007
    Assignee: General Motors Corporation
    Inventors: Paul A. Grougan, Thomas C. Zebehazy
  • Patent number: 7221623
    Abstract: The use of a pressure compensation system and composite polymer materials results in a new type of outboard sensor assembly, of the type used to monitor the status and location of towed array systems from boats. The inventive system is lower in cost, easier to manufacture in quantity, lighter weight, less likely to leak, and with a lower failure rate than conventional systems. The pressure compensation system makes use of a two (or more) phase slurry system to provide temperature compensation.
    Type: Grant
    Filed: May 19, 2005
    Date of Patent: May 22, 2007
    Assignee: Texas Research International, Inc.
    Inventors: Joseph S Thornton, Christopher Pearson Thornton, Shawn Lawrence Arnett
  • Patent number: 7206256
    Abstract: The use of a pressure compensation system and composite polymer materials results in a new type of outboard sensor assembly, of the type used to monitor the status and location of towed array systems from boats. The inventive system is lower in cost, easier to manufacture in quantity, lighter weight, less likely to leak, and with a lower failure rate than conventional systems.
    Type: Grant
    Filed: February 16, 2005
    Date of Patent: April 17, 2007
    Assignee: Texas Research International, Inc.
    Inventors: Joseph S Thornton, Christopher Pearson Thornton, Shawn Lawrence Arnett
  • Patent number: 7054229
    Abstract: An acoustic array comprising a plurality of nodes attached to two or more lines. Some or all of the nodes include an emitting transducer and a receiving hydrophone, and the balance include only a receiving hydrophone. Each emitting transducer has associated electronics comprising a high fidelity amplifier and a stored waveform input to the operational amplifier to drive the amplifier, the output of the amplifier exciting the transducer to emit a chirp having a hyperbolic frequency modulated (HFM) waveform. The frequency spectrum of the HFM chirp lies well below the resonant frequency of the transducer. The chirp emitted by a transducer in the node is received and processed by hydrophones in other nodes with a high fidelity representation of the chirp in a cross-correlation operation. Detected chirps are used to determine a range between the emitting and receiving nodes and a shape measurement of the array.
    Type: Grant
    Filed: April 29, 2003
    Date of Patent: May 30, 2006
    Assignee: The Johns Hopkins University
    Inventors: David A. Kitchin, Walter S. Allensworth
  • Patent number: 6847588
    Abstract: A system and method for processing sonar information from an underwater hydrophone array, at frequencies having wavelengths less than two times a spacing between adjacent hydrophones. The method and system all for processing received underwater waveforms at high frequency limits beyond the mechanical limits of the array.
    Type: Grant
    Filed: March 16, 2004
    Date of Patent: January 25, 2005
    Assignee: L-3 Communications Corporation
    Inventors: George Wallace, Paul Greene
  • Patent number: 6839302
    Abstract: An acoustic emitter for coupling in series in a marine seismic streamer is provided with an annular housing and an annular piezoelectric emitting element positioned coaxially within the housing. This form of construction permits the electrical or electro-optical transmission line which normally runs along the axis of the streamer to pass through the center of the emitting element, while also permitting the emitter to be spooled with the streamer.
    Type: Grant
    Filed: May 1, 2001
    Date of Patent: January 4, 2005
    Assignee: WesternGeco
    Inventors: Peter Austad, Rolf Rustad
  • Patent number: 6819984
    Abstract: A system for the accurate determination of the position of an underwater vehicle comprising a system observer subsystem having a state velocity update module, a terrain matching module, means for generating a prediction of the terrain matching module's performance and a constrained extended Kalman filter subsystem. The constrained extended Kalman filter subsystem includes a steady state extended Kalman filter, a non-linear constraint module, and a state predictor.
    Type: Grant
    Filed: May 11, 2001
    Date of Patent: November 16, 2004
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Richard R. Bedckman, Andrew B. Martinez, Brian S. Bourgeois
  • Patent number: 6697300
    Abstract: Method and apparatus for determining the positioning of volumetric detection array lines. In the case of a sonar array, ultrasonic frequencies are used. Transmitter subsystems including ceramic transducers, and sensors such as hydrophones, are deployed on the lines of the array and code division multiple access (CDMA) type pseudo-random numbers are used to identify each transmitter. Transit times between transducers and sensors, as determined by detector electronics, are sent to a ship-board receiver in any of various formats, so that array line position can be determined.
    Type: Grant
    Filed: September 13, 2002
    Date of Patent: February 24, 2004
    Assignee: General Dynamics Advanced Information Systems, Inc.
    Inventor: Michael D. Holt
  • Patent number: 6563762
    Abstract: 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 cable. The termination assembly further includes a coupling comprising an inner sleeve for mounting on a coax portion of the cable, an electrical connector for abutting a distal end of the coax portion, a coupling body interconnecting the inner sleeve and the electrical connector, the coupling body having a cylindrically-shaped wall disposed around the electrical connector to define therebetween an annular recess for receiving a connector of the acoustic receiver array, a coupling nut mounted on the coupling body and engageable with the acoustic receiver array connector to lock the acoustic receiver array connector onto the electrical connector, and an outer sleeve fixed to the coupling body.
    Type: Grant
    Filed: December 8, 1995
    Date of Patent: May 13, 2003
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Michael R. Williams
  • Patent number: 6525994
    Abstract: A method and apparatus for detecting, processing and tracking sonar signals to provide bearing, range and depth information that locates an object in three-dimensions underwater space. A Twenty Six Nearest Neighbor Peak Picker (TSNNPP) is disclosed that improves the detection of signals in noisy background by differentiating bandwidth (BW) characteristics of signals from BW characteristics of noise.
    Type: Grant
    Filed: May 11, 2001
    Date of Patent: February 25, 2003
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: James B. Donald, James H. Wilson
  • Patent number: 6501704
    Abstract: An underwater object positioning system comprises a workboat, an acoustic transmitter-receiver mounted on the workboat, first and second surface tow units towed by the workboat, an acoustic transducer that is mounted on the first surface tow unit, that is connected by a communication cable to the acoustic transmitter-receiver on the workboat and that is positioned by a radio positioning means; two acoustic receivers that are mounted on the second surface tow unit, that are connected by a communication cable to the acoustic transmitter-receiver on the workboat and that are positioned by a radio positioning means. An acoustic pulse transmitter is mounted on a submerged positioning target. A processor unit on the workboat calculates the location of the submerged target based on data showing the positions of the transducer and receivers, and the distances from the transducer and receivers to the acoustic pulse transmitter.
    Type: Grant
    Filed: November 21, 2001
    Date of Patent: December 31, 2002
    Assignees: National Institute of Advanced Industrial Science and Technology
    Inventor: Kiyokazu Nishimura
  • Publication number: 20020181329
    Abstract: A method and apparatus for detecting, processing and tracking sonar signals to provide bearing, range and depth information that locates an object in three-dimensions underwater space. A Twenty Six Nearest Neighbor Peak Picker (TSNNPP) is disclosed that improves the detection of signals in noisy background by differentiating bandwidth (BW) characteristics of signals from BW characteristics of noise.
    Type: Application
    Filed: May 11, 2001
    Publication date: December 5, 2002
    Inventors: James B. Donald, James H. Wilson
  • Patent number: 6473364
    Abstract: The high frequency response of a versatile exercise mine system that emulates potentially threatening mines is extended by an acoustic float system. A watertight housing is buoyed upward from the mine system and has a first acoustic sensor to provide an omni-directional response to higher frequency acoustic signals in the range of 20 to 40 kHz that are transmitted from distant sources through ambient water. A second acoustic sensor adjacent to the first acoustic sensor produces a directional response to the higher frequency acoustic signals. Processing circuits receive signals from the acoustic sensors and generate signals representative of the higher frequency omni-directional and directional responses. An inclinometer generates signals representative of inclination of the acoustic system and a cable feeds the all the representative signals to a versatile exercise mine system for additional processing and/or evaluation.
    Type: Grant
    Filed: January 9, 2002
    Date of Patent: October 29, 2002
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Brian M. Koehn
  • Publication number: 20020097635
    Abstract: A method for improving the determination of tracking and motion analysis information obtained from a set of received data points is presented. The method comprises selecting a determined number of data points for processing, determining at least one cost analysis matrix for each information item included in the selected data points, quantifying each of the at least one cost analysis matrix with regard to a known form; and providing a presentation for each of the quantified matrices. An operator may then discard those presented matrices that provide minimal levels of information and retain those that provide significant levels of information.
    Type: Application
    Filed: August 8, 2001
    Publication date: July 25, 2002
    Inventors: Victor P. LaRosa, Charles G. Muniak, Walter S. Wojciechowski
  • Patent number: 6404701
    Abstract: 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 acoustic transducers having a wiring connection attached thereto. A tow cable is connected to the nose end of the housing and is in communication with the wiring connection from each of the plurality of acoustic transducers. A characteristic of the assembly is that at least the body portion of the housing is entirely formed of a solid casting of plastic material thereby environmentally isolating the plurality of acoustic transducers within the body portion of the housing. This configuration prevents water intrusion into the transducer elements, and increases the cavitation threshold for the acoustic array, thereby allowing the array to be driven to higher acoustic intensities.
    Type: Grant
    Filed: July 16, 2001
    Date of Patent: June 11, 2002
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Thomas R. Stottlemyer
  • Patent number: 6385132
    Abstract: 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 slipped over the transom of a deployment vessel. Said coupling is accomplished without the use of a sub-surface robotic vessel to force the sensors into a particular orientation. The housing for the sensors is adapted to endure and minimize the impact on the host cable of the mechanical extremes the system is subjected to in the process of the conventional deployment and retrieval methods.
    Type: Grant
    Filed: May 31, 2000
    Date of Patent: May 7, 2002
    Assignee: Sercel, U.S. Inc.
    Inventor: James A. Sackett
  • Patent number: 6370085
    Abstract: A system to extend transducer arrays from the hull of a vessel while it is underway provides for increased array gain, volumetric aperture (very large aperture arrays), and rejection of hull-bound noise for submarines, surface ships, weapons, and unmanned underwater and surface vehicles. A plurality of arms extend radially outwardly from the hull of a submarine, and passive and/or active elements of the arrays are mounted around the hull on the arms, trail in the water from the arms, or extend between different ones of the arms or between arms and the hull. The system of arms and the array are folded into elongate recesses in the hull to lower noise during higher speed transit by the submarine. The arrays can be made up of sensors and/or projectors of radar, sonar signals, optical energy, vibrational energy, magnetic influence, temperature, etc., and combinations of these sensors.
    Type: Grant
    Filed: August 3, 2001
    Date of Patent: April 9, 2002
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Jonathan Finkle, Stephen G. Greineder, Raymond J. Rowland, Roy E. Tozier
  • Patent number: 6256264
    Abstract: The location of a submerged tow vehicle (LOST) system provides a device for accurately determining a position of an underwater vehicle towed by a surface craft or aircraft, such as a helicopter. The LOST system utilizes five sources of input data to compute a best estimate of the towed vehicle's position. These are (1) high resolution bathymetry data in an area of the towed vehicle's transit, (2) ocean depth at a position of the towed vehicle, (3) the towed vehicle's velocity over sea bottom, (4) a slant range from the towed vehicle to a known reference point, and (5) a position and course of the towing vehicle. The LOST system is comprised of a slant range updater, a maximum likelihood estimator, a constrained adaptive tracker and a slant range corrector.
    Type: Grant
    Filed: June 23, 2000
    Date of Patent: July 3, 2001
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Richard R. Beckman, Brian S. Bourgeois, Andrew B. Martinez