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| Application No. | Application Title | Issue Date |
| 20120008463 | HIGH DATA RATE ACOUSTIC MULTIPLE-INPUT/MULTIPLE-OUTPUT (MIMO) COMMUNICATION APPARATUS AND SYSTEM FOR SUBMERSIBLES Underwater multiple input/multiple output (MIMO) communication apparatus, systems, and methods are disclosed. An underwater MIMO apparatus includes a submersible housing having a water impermeable section, a data acquisition system located within the water impermeable s... | 01/12/2012 |
| 20110299362 | Underwater camera communication system An underwater communications system is provided that transmits electromagnetic and/or magnetic signals to a remote receiver. The transmitter includes a data input. A digital data compressor compresses data to be transmitted. A modulator modulates compressed data onto a ... | 12/08/2011 |
| 20110242943 | Hydrophone and Hydrophone Assembly for Performing Stereophonic Underwater Sound Recordings A hydrophone for recording underwater sound includes a housing having an outer surface designed to serve as a boundary surface for an incident sound wave and at least one vibration sensor having a sensor surface for recording sound waves and for preparing a sensor signa... | 10/06/2011 |
| 20110216626 | DIGITAL HYDROPHONE A digital underwater acoustic sensor system is disclosed. The system can include an acoustic sensor configured to detect an underwater acoustic signal and form an analog signal proportional to the underwater acoustic signal. The acoustic sensor can include an interior c... | 09/08/2011 |
| 20110199863 | Multi-Vessel Communication System A method for communicating between marine vessels includes the steps of connecting a communication hub and a first marine vessel via a cable; transmitting an electronic signal via the cable between the communication hub and the first marine vessel; and transmitting the ... | 08/18/2011 |
| 20110170375 | MARINE SIREN SEISMIC SOURCE A very low frequency marine seismic source has a reservoir of water (47) feeding water to an aperture communicating with the surrounding water (13). The rate of water flow through the aperture is controlled by a rotor disc (11) and stator disc (9... | 07/14/2011 |
| 20110149691 | Supercavitating Projectile Tracking System and Method A system for three-dimensional tracking of high speed undersea projectiles may utilize a distributed field of randomly positioned passive acoustic sensors. The system measures variables related to the pressure field generated by a supercavitating projectile in flight wh... | 06/23/2011 |
| 20110141853 | UNDERWATER ACOUSTIC NAVIGATION SYSTEMS AND METHODS An acoustic underwater navigation system is disclosed. For instance, an underwater receiver determines its position using signals broadcast from an array of acoustic transmitters located near the surface. The position of the array is measured using global positioning sy... | 06/16/2011 |
| 20110128822 | Underwater Communications A method of underwater communication between a link initiator and a link receptor, by transmitting a link acquisition waveform from the initiator to the receptor, and establishing communications channel parameters from such a received waveform. Data is then transmitted ... | 06/02/2011 |
| 20110096633 | PORTABLE DIVER APPARATUS, COMPRISING A PORTABLE COMPUTING DEVICE AND AN ADD ON DIVER DEVICE A portable diving apparatus, which comprises: (a) a water proof casing which comprises an external key pad; (b) a portable computing device within said water proof casing, said portable computing device comprises a diving module; (c) a pressure sensor which is mounted a... | 04/28/2011 |
| 20110096632 | ROBUST UNDERWATER COMMUNICATION SYSTEM A robust underwater communication system, for communication between an acoustic signal transmitter and a remotely positioned acoustic signal receiver, wherein transmitted data is carried by a plurality of symbols each having two components one of which comprises a disti... | 04/28/2011 |
| 20110090763 | PERSONAL WATER SAFETY DEVICE AND METHOD THEREOF A personal water safety device includes at least two sonar receivers, at least one water sensing device, and an alarm apparatus. The at least one water sensing device communicates with each of the at least two sonar receivers via sound waves. The alarm apparatus wireles... | 04/21/2011 |
| 20110090762 | Underwater navigation system The present invention provides an underwater navigation system which can determine the bearing and the range of a remotely located beacon from a navigation station. The remotely located beacon transmits a pair of signals each having a different propagation velocity. Typ... | 04/21/2011 |
| 20110013487 | APPARATUS, SYSTEMS AND METHODS FOR ENHANCED DETECTION, SYNCHRONIZATION AND ONLINE DOPPLER SCALE ESTIMATION FOR UNDERWATER ACOUSTIC COMMUNICATIONS Advantageous online and/or real-time OFDM-based underwater acoustic (UWA) apparatus, systems and methods are provided according to the present disclosure. The apparatus, systems and methods employ a receiver with a bank of parallel branches, with each branch having a se... | 01/20/2011 |
| 20110007606 | Underwater Surveillance A counter-terrorism underwater surveillance system for detecting swimming intruders includes a sonar array 20 comprising a plurality of sensor elements which both transmit and receive acoustic signals. Power amplifiers 22 generate electric transmit signals... | 01/13/2011 |
| 20100278014 | Underwater synchronisation system An underwater system (10) comprising a transmitter (12) for broadcasting an electromagnetic synchronisation signal and at least one node (14) that has a receiver for receiving that signal, the node being adapted to use the received signal for synchr... | 11/04/2010 |
| 20100245119 | TWO-TIER STREAMER COMMUNICATION SYSTEM A two-tier communication system for a seismic streamer. The communication system operates over an unshielded twisted-pair communication line extending the length of the streamer. Repeater units having a repeater function and a device controller function divide the twist... | 09/30/2010 |
| 20100157739 | Multi-frequency, Multi-beam Acoustic Doppler System An acoustic Doppler system including an acoustic subsystem controller operatively connected to a plurality of acoustic transceivers, with a first of the plurality of acoustic transceivers, operating at a first acoustic frequency, operatively connected to a first group o... | 06/24/2010 |
| 20100134319 | Electromagnetic/acoustic underwater communications system An underwater communications system is provided that transmits electromagnetic and/or magnetic signals to a remote receiver. The transmitter includes a data input. A digital data compressor compresses data to be transmitted. A modulator modulates compressed data onto a ... | 06/03/2010 |
| 20100107959 | DELIVERY SYSTEMS FOR PRESSURE PROTECTING AND DELIVERING A SUBMERGED PAYLOAD AND METHODS FOR USING THE SAME A payload delivery unit for protecting and delivering a payload submerged in a submersion medium comprises a container including a pressure resistant shell and a resilient seal device. The shell defines a containment chamber and includes first and second shell members h... | 05/06/2010 |
| 20100110835 | Underwater navigation An underwater navigation system comprising a transmitter having an electrically insulted magnetic coupled antenna for transmitting an electromagnetic and/or magneto-inductive signal, a receiver having an electrically insulated magnetic coupled antenna for receiving an e... | 05/06/2010 |
| 20100061187 | POSITIONING SYSTEM A passive listening acoustic system and method of use may include source means for providing continuous, pulsed, or pulse coded acoustic signals at two or more frequencies and at least two acoustic sensors or hydrophones which detect and record a signal for use within a... | 03/11/2010 |
| 20090279389 | ULTRASONIC SIGNAL COMMUNICATION DEVICE, COMMUNICATION DEVICE, COMMUNICATION DEVICE FOR DIVERS, COMMUNICATION SYSTEM, AND COMMUNICATION METHOD An ultrasonic signal communication device that has an ultrasonic oscillation unit that has at least two resonance frequencies according to the oscillation mode, a transmission unit that generates a first ultrasonic signal at one of the two resonance frequencies and tran... | 11/12/2009 |
| 20090268554 | Underwater sound projector system and method of producing same An underwater sound projector system comprises multiple sound projectors, each sound projector being capable of producing acoustic pressures. The sound projectors are held in close proximity such that the sound projectors interact with one another via the acoustic press... | 10/29/2009 |
| 20090238042 | METHODS AND SYSTEMS FOR UNDERWATER NAVIGATION A method for navigating underwater is disclosed. The method uses a navigation system to project a first velocity measurement along one or more signal beams having a second velocity measurement, where the second velocity measurement is related to at least one of the one ... | 09/24/2009 |
| 20090208219 | Multimode Communications System A multimode wireless communications system that uses the three mechanisms of light, radio and acoustic carriers either in combination or through selection of the most appropriate carrier.... | 08/20/2009 |
| 20090201763 | Airborne Laser-Acoustic Mine Detection System A system and method is provided for using acoustical pulses generated from an airborne laser source to locate objects under water. An array of acoustic sensors, such as passive sonobuoys at the ocean surface, is deployed in known or determinable locations by aircraft. E... | 08/13/2009 |
| 20090147624 | Sound Collection Environment Deciding Device, Sound Processing Device, Electronic Appliance, Sound Collection Environment Deciding Method and Sound Processing Method A sound collection environment deciding device for deciding whether the sound was collected in air or in water by utilizing an audio signal of collected sound is provided. Methods of Utilizing the audio signal of collected sound include, for instance, utilizing a differ... | 06/11/2009 |
| 20090114140 | SUBSEA OPERATIONS SUPPORT SYSTEM An underwater operations support system facilitates underwater exploration, monitoring, maintenance and construction operations associated with development of natural resources. The operations support system may include energy generation subsystems, energy accumulation ... | 05/07/2009 |
| 20090041145 | METHOD TO DETECT DATA TRANSMITTED FROM MULTIPLE ANTENNAS AND SYSTEM THEREOF A method to detect data transmitted from multiple antennas, said method comprising steps of: selecting a starting data block and calling it as previous data block; defining a set of indices of bits to be checked for possible flip in the previous data block as a check ca... | 02/12/2009 |
| 20090031940 | Underwater Vehicle With Sonar Array An underwater vehicle including an axi-symmetric framing system rotatable about a centerline to define a shell of revolution having a uniformly-convex outer boundary. A narrow-beam sonar array is mounted on the axi-symmetric framing system, and includes a multitude of s... | 02/05/2009 |
| 20080316862 | Point Source Localization Sonar System and Method A matched-field based sonar system and method of use that supports real-time, three-dimensional acoustic source localization using a mobile, horizontal array. The system receives and processes acoustic array, non-acoustic array, and own-ship navigational data in the mat... | 12/25/2008 |
| 20080247275 | Underwater detection apparatus An underwater detection apparatus for detecting a target by transmitting and receiving an ultrasound signal is provided. The apparatus includes a replica memory module for storing the typical amplitude evolution of a seawall echo during a predetermined time period as a ... | 10/09/2008 |
| 20080239875 | Surveying Method Using an Arrangement of Plural Signal Sources The survey technique for use in a marine environment to survey a subterranean structure includes providing an arrangement of plural signal sources in a body of water to produce corresponding signals. The signals of the signal sources in the arrangement are set to cause ... | 10/02/2008 |
| 20080239874 | UNDERWATER GUIDANCE SYSTEMS, UNMANNED UNDERWATER VEHICLES AND METHODS An unmanned underwater vehicle for use in water and with at least one acoustic signal source includes a vehicle body, a steering mechanism to direct the vehicle body through the water, a propulsion device to force the vehicle body through the water, and an adaptive Dopp... | 10/02/2008 |
| 20080225643 | WATER SUBMERSIBLE ELECTRONICS ASSEMBLY AND METHODS OF USE A submersible electronics device for use in a body of water and a substratum floor below the body of water includes a submersible housing, an operational electronics system, and a mobility system. The operational electronics system is mounted in and/or on the housing. T... | 09/18/2008 |
| 20080165617 | Methods of and systems for continually measuring the range between mobile underwater vehicles carrying acoustical signal transmitters and remotely deployed synchronized underwater acoustical receivers provided with signal processing for continually determining such range during the underwater moving of the vehicle, and for measuring acoustic underwater transmission loss, geoacoustical properties and for other purposes Invention relates to a novel method of and system for ranging between an acoustic source carried on an unmanned or autonomous undersea mobile vehicle (UUV or AUV) and preferably a plurality of hydrophone receivers remotely deployed from the vehicle in predetermined patt... | 07/10/2008 |
| 20080144442 | Apparatus, systems and methods for seabed data acquisition Seabed sensor units, systems including same, and methods for acquiring seabed data are described, one seabed sensor unit comprising a base, the base containing at least one sensor able to detect a seismic signal, electronics comprising a clock and one or more electronic... | 06/19/2008 |
| 20080112267 | OPTICAL SENSOR INTERROGATION WITH WAVELENGTH GROUPING IN TIME SLOTS Seismic sensor systems and sensor station topologies, as well as corresponding cable and sensor station components, manufacturing and deployment techniques are provided. For some embodiments, networks of optical ocean bottom seismic (OBS) stations are provided, in which... | 05/15/2008 |
| 20080112266 | Seabed Resource Exploration System and Seabed Resource Exploration Method A seabed resource exploration system includes: a vibrator 1 for transmitting a sound wave into the sea and receiving a scattered wave in which the sound wave is reflected on a boundary surface between seawater and a mixture of methane gas and methane hydrate, whi... | 05/15/2008 |
