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| Number | Title | Issue Date |
| 8059485 | Communication system, information collecting method and base station apparatus A communication system for obtaining predetermined information from an underwater terminal via a sonobuoy is provided. The system includes an underwater terminal for transmitting and receiving sound wave signals, a base station apparatus for transmitting and receivi... | 11/15/2011 |
| 8050138 | Ballistic-acoustic transducer system A ballistic-acoustic transducer system includes a processor and one or more acoustic sensors. The sensors are positioned in a body of water and are in communication with the processor. The system is configured such that acoustic energy generated by a non-explosive p... | 11/01/2011 |
| 7046812 | Acoustic beam forming with robust signal estimation Audio signals from any array of microphones are individually filtered, delayed, and scaled in order to form an acoustic beam that focuses the array on a particular region. Nonlinear robust signal estimation processing is applied to the resulting set of audio signals... | 05/16/2006 |
| 6995707 | Integrated maritime portable acoustic scoring and simulator control and improvements The invention, as embodied herein, comprises an improved portable maritime scoring and simulation system that comprises three or more buoys that are deployed in an area of water selected for maritime combat training. Attached to each buoy are a global positioning sy... | 02/07/2006 |
| 6954175 | Accurate positioning of devices suspended underwater from a floating body A system for determining the position of a device attached to a floating platform floating at the surface of a body of water. The system includes first and second navigation antennas mounted on the platform. A device is mounted to the platform in a position collinea... | 10/11/2005 |
| 6941226 | Method for determining, recording and sending GPS location data in an underwater environment Underwater position determination is provided by combining sonar-derived ranging data between a sonar receiver and a sonar transmitter with GPS position data to provide geographically-referenced position data accurately representing the position of a sonar receiver ... | 09/06/2005 |
| 6932185 | Acquisition method and device for seismic exploration of a geologic formation by permanent receivers set on the sea bottom A method and device for seismic exploration of a subsea geologic formation by pickups set on the sea bottom and intermittently connectable to active data acquisition stations (11) brought nearby. Permanent passive reception stations (1) comprising a he... | 08/23/2005 |
| 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 position error of the submarine and a speed of the submar... | 02/03/2004 |
| 6630890 | Methods, systems and tools for borehole logging A borehole logging tool system includes a surface system, a logging array, and a logging cable providing power supply and data paths connecting the logging array to the surface system, wherein the logging array includes a series of discrete sondes connect... | 10/07/2003 |
| 6233202 | Dipping sonar transducer housing A dipping sonar transducer housing includes a generally cylindrical housing (10) which is suspended at the end of a cable (12) connected to tile housing through a vibration isolation module (14) which includes springs (22) to damp out noise, particularly ... | 05/15/2001 |
| 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 device comprises a bubble generator (2) which releases into the... | 07/18/2000 |
| 5995445 | Acoustic survey technique A system locates the elements of a randomly dispersed, untethered, array of sonobuoys from which are suspended active, transmitting, transducer elets and passive, receiving, transducer elements. The system comprises a data conditioning unit which receiv... | 11/30/1999 |
| 5982707 | Method and apparatus for determining geologic relationships for intersecting faults A novel fault framework method and apparatus automatically computes the relationships between intersecting fault surfaces. When faults are loaded into the novel fault framework apparatus, all intersecting fault pairs are determined and the fault fault int... | 11/09/1999 |
| 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 moorings and receivers that are either suspended from drif... | 11/25/1997 |
| 5339281 | Compact deployable acoustic sensor A sensor for detecting acoustic energy emitted by a target is disclosed. The sensor comprises a housing including a plurality of transducers for receiving acoustic energy. The transducers are randomly deployed within a predetermined area around the housin... | 08/16/1994 |
| 5121173 | Proximity effect very long wavlength infrared (VLWIR) radiation detector A VLWIR proximity effect detector 10 includes a substrate 12, a bulk superconducting material 14, a proximity layer 16 which overlies a portion of the bulk superconducting material 14, an insulator layer 17 and a transparent tunnelling electrode 18. Detec... | 06/09/1992 |
| 5119341 | Method for extending GPS to underwater applications A system that extends the use of a navigation system which uses radio waves to a an environment which is otherwise inaccessible to radio-based position, location, or navigation services. This system provides beacons which dynamically determine their posit... | 06/02/1992 |
| 5027333 | Acoustic locator for elements of a flexible sonar array An acoustic array, useful for sonar, comprises a plurality of transducing ements which are free floating and not connected to each other. Means are provided for locating the position of each of the transducer elements. The acoustic array may be one-dimens... | 06/25/1991 |
| 4927396 | Sonobuoy A sonobuoy comprising: a container adapted to nest side-by-side and end-to-end with plural containers of the same configuration; and inflatable parafloat collapsed into an upper chamber of the container; compressed gas means in the container for inflating... | 05/22/1990 |
| 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 for the sonobuoy device is divided into a high gain, narro... | 09/01/1987 |
| 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 master station upon detecting sound. The master station corre... | 01/27/1987 |
| 4559605 | Method and apparatus for random array beamforming A beamforming method and apparatus utilizing a plurality of sensing elements which are free to take up random positions. Each sensing element generates output signals in response to sensed radiation. The signals are fed to a data process or which generate... | 12/17/1985 |
| 4189786 | Radio buoy assembly 1. An apparatus comprising an intelligence capsule, a radio buoy, releasable means for retaining said buoy and said capsule attached together to be able to sink in sea water as a unit, pressure-responsive means for initiating release of said releasable me... | 02/19/1980 |
