公开(公告)号：US11976924B2

公开(公告)日：2024-05-07

申请号：US17288483

申请日：2019-10-28

Applicant: IXBLUE ,  INSTITUT D'OPTIQUE GRADUATE SCHOOL ,  CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE ,  UNIVERSITE DE BORDEAUX

Inventor： David Brynle Barrett ,  Pierrick Cheiney ,  Philippe Bouyer

IPC: G01C19/58 ,  G01P15/093 ,  G01P15/18 ,  G21K1/06

CPC classification number: G01C19/58 ,  G01P15/093 ,  G01P15/18

Abstract: Disclosed is a multi-axis atom interferometer system, including a source of cold atoms, a laser source generating a first light pulse configured in such a way as to spatially split the source of cold atoms into a first cloud of atoms propagating along a first trajectory along a first axis and a second cloud of atoms propagating along a second trajectory along a second axis, a second light pulse adapted to spatially deflect the first trajectory along the second axis and simultaneously the second trajectory along the first axis towards a first point and a last light pulse adapted to recombine the at least one part of the first cloud of atoms and the at least one part of the second cloud of atoms at the first point, and a detection system measuring an interferometric phase-shift accumulated between the first light pulse and the last light pulse.

公开(公告)号：US11744003B2

公开(公告)日：2023-08-29

申请号：US16766385

申请日：2018-11-22

Applicant: IXBLUE ,  INSTITUT D'OPTIQUE GRADUATE SCHOOL ,  CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE ,  UNIVERSITE DE BORDEAUX

Inventor： Henri Porte ,  Baptiste Battelier

IPC: H01S5/00 ,  H05H3/04 ,  G02F1/01 ,  G02F1/31 ,  G02F1/355 ,  G02F1/37 ,  H01S3/00 ,  H01S3/067 ,  H01S3/13 ,  H01S5/042 ,  H01S5/0687 ,  H01S5/125 ,  H01S5/50

CPC classification number: H05H3/04 ,  G02F1/011 ,  G02F1/31 ,  G02F1/3551 ,  G02F1/3558 ,  G02F1/37 ,  H01S3/0064 ,  H01S3/0085 ,  H01S3/0092 ,  H01S3/067 ,  H01S3/06754 ,  H01S3/1305 ,  H01S5/0064 ,  H01S5/0085 ,  H01S5/0092 ,  H01S5/0428 ,  H01S5/0687 ,  H01S5/125 ,  H01S5/50 ,  G02F2202/20 ,  G02F2203/50

Abstract: Disclosed is a device for interaction between a laser beam and a hyperfine energy transition of a chemical species. The device further includes an electro-optic modulator with a single sideband with an input optical waveguide suitable for receiving a source laser beam and an output optical waveguide suitable for generating an output laser beam and an electronic system suitable for generating and applying, simultaneously, a first modulated electrical signal, sin(Ω1t)) to a first hyperfrequency pulse on a first high-frequency electrode of the electro-optic modulator and, respectively, another modulated electrical signal, cos(Ω1t)) to the first pulse on another high-frequency electrode of the electro-optic modulator, in such a way as to frequency-switch the output laser beam to a first optical frequency offset from the first pulse with respect to the initial optical frequency.

公开(公告)号：US11328829B2

公开(公告)日：2022-05-10

申请号：US17227023

申请日：2021-04-09

Applicant: IXBLUE

Inventor： Pierrick Cheiney ,  Baptiste Gouraud ,  David Brynle Barrett ,  Baptiste Battelier ,  Philippe Bouyer

IPC: G21K1/00 ,  G01P15/093 ,  G02B5/18 ,  G02B27/28

Abstract: Disclosed is an atomic interferometer including a source of atoms, a laser source and a magnetic field generating device, a polarizer, a system for adjusting a detuning between two optical frequencies of the incident laser beam, a two-dimensional diffraction grating arranged in such a way as to receive the incident laser beam and to form by diffraction at least three diffracted beams, a controller configured to select a combination of an optical frequency detuning, a polarization state and a magnetic field, the combination being adapted to select a first pair of laser beams among the pairs of beams formed from the incident laser beam and the diffracted beams, the pair of laser beams being applied in such a way as to interact with the cloud of atoms by multi-photon transitions and to detect an acceleration of the cloud of atoms along a measurement direction.

公开(公告)号：US11314211B2

公开(公告)日：2022-04-26

申请号：US16770202

申请日：2018-12-06

Applicant: IXBLUE

Inventor： Bernard Vau ,  Lionel Minne

IPC: G05B13/04

Abstract: A method for automated optimisation of a servo control system controlled by a setpoint, the servo control system including a corrector in a feedback loop, the method exhibiting satisfactory reliability and performance in terms of stability through an iterative procedure, the most effective corrector being determined from among correctors by developing a current value of the delay margin and by individually testing the correctors on the servo control system of the real mechatronic system and by injecting an excitation signal into the loop and by assessing two effective indicators based on at least one effective static margin and one effective dynamic margin, the two effective indicators being an effective static indicator and an effective dynamic indicator, the iterative procedure being stopped on a corrector, which is then the optimal corrector, when the two effective indicators become greater than respective thresholds determined for a current delay margin value.

公开(公告)号：US20210389449A1

公开(公告)日：2021-12-16

申请号：US17287020

申请日：2019-10-18

Applicant: IXBLUE

Inventor： Jean-Michel HUBERT ,  Hugues DE BECDELIEVRE

IPC: G01S13/89 ,  G01C21/16 ,  G01S13/937

Abstract: Disclosed is a method for resetting the estimated position of a vehicle, including: —a step of receiving by a RADAR system a real RADAR image, —a step of acquiring an estimated position of the vehicle, —a step of calculating by a computer equipping the vehicle a simulated RADAR image, as a function of the estimated position of the vehicle and of a cartographic model of the environment of the vehicle, —a step of comparing the real RADAR image and the simulated RADAR image, and —a step of correcting the estimated position of the vehicle as a function of the result of the comparison.

公开(公告)号：US20210286061A1

公开(公告)日：2021-09-16

申请号：US17275872

申请日：2019-09-12

Applicant: IXBLUE

Inventor： Didier CHARLOT

IPC: G01S7/53 ,  G10K11/20 ,  G01S15/42 ,  G01S15/89

Abstract: Disclosed is a method for determining a difference in depth or a lateral distance in relation to the vertical between two points of an underwater environment, in particular by measuring a propagation time of a sound wave. The determination is based on a single-layer model of the environment in which the wave is supposed to propagate in a straight line along an effective propagation direction, at a mean velocity that is independent of the propagation direction. Also disclosed is a method for determining the profile of the mean velocity based on the measurements of differences in depths per se, a determination of the local velocity profile over the variation interval of the sounded depths, and a related sonar system.

公开(公告)号：US20210175675A1

公开(公告)日：2021-06-10

申请号：US16770285

申请日：2018-12-05

Applicant: IXBLUE

Inventor： Carole CHAIZE ,  Gildas TOUIN ,  Frédéric MOSCA ,  Eric DELORT ,  Jonathan LAPORTE ,  Hervé ARDITTY ,  Sébastien GRALL ,  Christian GIROUSSENS

IPC: H01R39/18 ,  H01R13/523

Abstract: An electrical connector includes an electrically conductive contact element (122) and a support (70). The contact element (122) is supported by an intermediate element (120) made of an elastically deformable material and connected to the support (70). An electrical connection assembly including a connector of the type is also described.

公开(公告)号：US20200088521A1

公开(公告)日：2020-03-19

申请号：US16567257

申请日：2019-09-11

Applicant: iXblue

Inventor： Sophie GLEVAREC ,  Jean-Philippe MICHEL ,  Fabien NAPOLITANO ,  Guillaume PICARD ,  Martin PUCHOL

IPC: G01C21/20 ,  G01S19/47

Abstract: Disclosed is a positioning system including: several inertial measurement units; at least one common sensor, providing a measurement of a positioning parameter of a system; for each inertial measurement unit, a navigation filter configured to: a) determine an estimate of the positioning parameter, on the basis of an inertial signal provided by the inertial measurement unit; and to b) correct the estimate, as a function of the measurement and of a correction gain that is determined on the basis of an augmented variance higher than the variance of a measurement noise of a common sensor; and —at least one fusion module determining a mean of the estimates, the mean being not reinjected at the input of the navigation filters. Also disclosed is an associated positioning method.

公开(公告)号：US20190331492A1

公开(公告)日：2019-10-31

申请号：US16311488

申请日：2017-06-20

Applicant: IXBLUE

Inventor： Eric DUCLOUX

IPC: G01C19/72

Abstract: Disclosed is a system for the interferometric measurement of a physical parameter, including an amplified spontaneous emission light source, optically connected to a Sagnac ring interferometer, and two detectors, each supplying a measurement signal representative of the light output from the interferometer, and a reference signal representative of the light output emitted by the source, which is impaired by an excess relative intensity noise. This measurement is obtained from a difference between the measurement and reference signals, weighted by a weighting coefficient which is controlled to minimise the statistical deviation of an additional weighted difference between signals obtained by demodulating the measurement and reference signals by way of an additional digital demodulation sequential code insensitive to the parameter. Also disclosed is a gyroscope including such a measuring system.

公开(公告)号：US10454205B2

公开(公告)日：2019-10-22

申请号：US15643680

申请日：2017-07-07

Applicant: IXBLUE ,  DCNS

Inventor： Herve Arditty ,  Frederic Lelidec

IPC: H01R13/52 ,  G02B6/38 ,  H01R24/58 ,  H01R3/08 ,  H01R13/523 ,  H01R107/00 ,  H01R43/00

Abstract: An underwater connector half includes a base and at least two electrical connection terminals respectively connected to two electric wires received in at least one cable. The two electrical connection terminals are ring-shaped and coaxial about an axis located along a direction of assembly of a complementary connector half and the base has a side wall that is parallel to the axis and through which passes the cable. An underwater connector including such a connector half is also disclosed.