IXSEA Patent applications |
Patent application number | Title | Published |
20110051969 | ACOUSTIC ANTENNA HAVING INTEGRATED PRINTED CIRCUITS - An acoustic antenna requiring the fewest possible number of assembly operations, which operations can be easily automated. The acoustic antenna includes an array of elementary transducers ( | 03-03-2011 |
20110038230 | UNDERWATER ACOUSTIC POSITIONING SYSTEM - A positioning system has at least one underwater apparatus, which includes an acoustic receiver and a computer. The system includes a base station placed in the sea environment, the base station transmitting an acoustic signal received by the acoustic receiver, wherein the acoustic receiver includes a hydrophone, the base station includes at least two acoustic transmitters forming an antenna, the distances between the acoustic transmitters of the antenna being known and the transmitters being synchronized therebetween. According to the invention, the computer includes an element for calculating differences in arrival time and differences in phases of acoustic signals coming from the base station transmitters, and an element for calculating the possible geometric loci of the position of the apparatus relative to the base station and to the orientation thereof, and the position of the underwater apparatus is predetermined from these possible geometric loci. | 02-17-2011 |
20100088030 | Dynamic Positioning Architecture - The present invention provides an improved architecture for integrating an inertial navigation system (INS) into a dynamic positioning (DP) system for a vessel. The architecture includes an INS unit and a DP system having a Kalman filter or other algorithm for combining data supplied by a plurality of position measuring equipment (PME) and the INS unit to derive an estimate of the position or speed of the vessel. A switch array and a switch array controller are also provided. These may optionally form a part of the DP system. The switch array is operable under the control of the switch array controller to supply data supplied by one or more of the plurality of position measuring equipment to the INS unit for the purposes of correcting drift. The selection of which of the one or more PME is/are to be combined with the INS unit is made automatically, in real time, to dynamically optimise the DP system. | 04-08-2010 |
20100014385 | SONAR WITH DEFORMABLE ANTENNA AND ASSOCIATED METHOD OF SIGNAL PROCESSING TO FORM A SYNTHETIC ANTENNA - 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. | 01-21-2010 |
20090265109 | Method for acquiring and processing magnetometric data by local updates in real time - The invention concerns a method for acquiring and processing magnetometric data for representing on an at least two-dimensional map magnetometric characteristics of a geographical zone including a step of measuring the intensity of a magnetic field ( | 10-22-2009 |
20090242743 | GUIDED COHERENT ATOM SOURCE AND ATOMIC INTERFEROMETER - A guided coherent atom source ( | 10-01-2009 |
20090231957 | FRONTAL SONAR - Frontal sonar for observing the seafloor, characterized in that it includes: elements for insonifying a seafloor area divided into M sectors, able to perform a characteristic insonification of each sector of the area during an operation recurrence of the sonar; and receiving elements including a physical antenna consisting of an array of K transducers, the antenna being lacunar and thus ambiguous, so that it defines N image lobes, and in that each of the characteristically insonified sector is associated with a single image lobe defined by the antenna, so that the antenna ambiguity is removed. | 09-17-2009 |
20090175128 | SONAR IMAGING SYSTEM WITH A SYNTHETIC APERTURE - A synthetic antenna sonar system, includes:
| 07-09-2009 |
20090161112 | METHOD AND POWER-ASSISTED OPTIC-FIBER MEASURING DEVICE AND GYRO - The invention relates to a method and an optical-fibre measuring device including a light source with a light power P, a Sagnac ring interferometer in which propagate two counter-propagating waves, a detector receiving a light flux from the interferometer and converting it into an electrical signal representing the total phase difference δφ | 06-25-2009 |