公开(公告)号：US11075436B2

公开(公告)日：2021-07-27

申请号：US16696931

申请日：2019-11-26

Applicant: THALES ,  CENTRE NATIONAL D'ETUDES SPATIALES

Inventor： Dimitri Vynohradov ,  Jérôme Brossier ,  Benjamin Monteillet ,  Jérôme Lorenzo ,  Nicolas Ferrando

IPC: H01P3/123 ,  H01P1/06 ,  H01P1/18 ,  H01P5/18 ,  H01Q13/06 ,  H01Q21/06

Abstract: An RF joint rotating about an axis of rotation (Z) includes a number N, greater than or equal to 1, of RF transmission channels, a first, internal surface of symmetry of revolution about the axis (Z) and of RF transmission having a first, internal radius r1, and a second, external surface of symmetry of revolution about the axis (Z) and of RF transmission having a second, external radius r2, strictly less than the first, internal radius r1. The first and second RF transmission surfaces facing one another and rotationally mobile about the axis (Z) are configured through the first and second radii r1, r2, the geometry of the first and second RF access ports, and the geometry of the first and second RF containment and guidance means, such that: each RF transmission channel Vi, i varying from 1 to N, comprises a first RF rotating waveguide, and the N first RF rotating waveguides are distributed angularly over a predetermined number NC, greater than or equal to 1 and less than or equal to N, of sections of surfaces of revolution about the axis (Z) of the second RF transmission surface, each of the NC sections being situated along the longitudinal axis of symmetry (Z) at a predetermined different level L1(k).

公开(公告)号：US20210176103A1

公开(公告)日：2021-06-10

申请号：US17254696

申请日：2019-06-21

Applicant: SAFRAN DATA SYSTEMS ,  CENTRE NATIONAL D'ETUDES SPATIALES

Inventor： Alain THOMAS ,  Jean-Marc LEVEAU ,  Stanislas AUGARDE ,  Emmanuel BOUISSON ,  Adrien GAY

IPC: H04L27/233 ,  H04L7/06 ,  H04B1/00

Abstract: Method for processing a sequence of digital signal samples comprising a first sub-sequence and a second sub-sequence, said method comprising: forming (106) a first block of samples comprising the first sub-sequence and a second block of samples comprising header samples followed by the second sub-sequence; demodulating (108) the first block of samples through a digital demodulator to produce a first block of symbols, and the second block of digital signal samples through a second digital demodulator to produce a second block of symbols, the second demodulator implementing a carrier synchronisation or symbol rate synchronisation starting with the header samples (E6-E9), which comprise samples in a number adapted in such a way that the synchronisation is effective before the second demodulator demodulates the second sub-sequence; and reconstructing (114) a sequence of symbols by concatenating the first symbol block with the second symbol block.

公开(公告)号：US20210167477A1

公开(公告)日：2021-06-03

申请号：US17254496

申请日：2019-06-17

Applicant: THALES ,  CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE ,  CENTRE NATIONAL D'ETUDES SPATIALES

Inventor： Damien PACAUD ,  Etienne LAPLANCHE ,  Serge VERDEYME ,  Olivier TANTOT ,  Nicolas DELHOTE ,  Stéphane BILA ,  Aurélien PERIGAUD ,  Ludovic CARPENTIER

IPC: H01P1/219 ,  H01P1/12 ,  H01P1/165 ,  H01P1/06

Abstract: A tunable microwave system includes at least two elements, each element being chosen from a propagating guide, an evanescent guide, a resonator, and at least one coupling device arranged between the two elements and configured to couple the two elements to each other, the coupling device having a holder having an aperture and having at least one elongate element the shape of which is elongate in a polarization direction contained in a plane of the aperture, the elongate element being securely fastened to the perimeter of the aperture at at least one end, the coupling device being configured to be rotatable about an axis substantially perpendicular to the plane of the aperture so as to modify a value of the polarization direction and so that the coupling between the two elements is dependent on the value of the polarization direction.

公开(公告)号：US20210151846A1

公开(公告)日：2021-05-20

申请号：US16768917

申请日：2018-12-05

Applicant: UNIVERSITÉ DE BORDEAUX ,  CENTRE NATIONAL D'ETUDES SPATIALES ,  INSTITUT POLYTECHNIQUE DE BORDEAUX ,  CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE

Inventor： Anthony GHIOTTO ,  Frédéric PARMENT

IPC: H01P3/12 ,  H01P11/00

Abstract: This microwave component (10) comprises a waveguide (12) comprising an upper layer, a lower layer, and a central layer (18) intermediate between the upper layer and the lower layer, said layers defining a zone (19) of propagation of an electromagnetic wave, the propagation zone (19) extending along a propagation axis, and comprising a cavity (32) bounded by the upper layer, the lower layer, and, laterally, by two opposite lateral edges (36) of the central layer (18).
The waveguide (12) comprises at least one dielectric strip (28) placed in the propagation zone (19), the dielectric strip (28) being defined in one of the upper layer and the lower layer or being placed in the cavity (32) away from the lateral edges (36) of the cavity (32).

公开(公告)号：US10858124B2

公开(公告)日：2020-12-08

申请号：US15303898

申请日：2015-04-03

Applicant: CENTRE NATIONAL D'ETUDES SPATIALES

Inventor： Pascal Bultel

IPC: B64G1/00 ,  B64G1/40 ,  B64G1/64 ,  B64G1/10

Abstract: The invention relates to a method for transferring a space payload from a first orbit to a second orbit. Said method is characterized in that the space payload, moving about the first orbit, is attached to a removable orbital towing assistance device including at least one fuel pouch. Said method includes the steps of: —attaching (E1) an orbital transfer vehicle to the removable orbital towing assistance device; and —transferring (E2) the space payload and the removable orbital towing assistance device to the second orbit by means of the orbital transfer vehicle. The invention also relates to a removable orbital towing assistance device intended for a space payload and an orbital transfer vehicle and enabling direct supply of fuel to the vehicle and/or the space payload.

公开(公告)号：US10826444B2

公开(公告)日：2020-11-03

申请号：US15773051

申请日：2016-11-03

Applicant: CENTRE NATIONAL D'ETUDES SPATIALES C N E S

Inventor： Geoffroy Soubercaze-Pun ,  Luc Lapierre

IPC: H03F1/56 ,  H03F1/02 ,  H03F3/19 ,  H03F3/21 ,  H03F3/189 ,  H03F1/32 ,  H03F3/24 ,  H03F1/06 ,  H03F3/22 ,  H03F3/58

Abstract: Disclosed is a method for producing a stage for amplifying the power of a variable envelope signal including at least one amplifier. For each amplifier, a form of ideal variation in average power POUTL is selected. For each value of each setting parameter and for each average input power value, a value of an optimisation criterion is calculated on the basis of the mathematical expectation of at least one optimisation parameter. An optimum value of each setting parameter is determined and the amplification stage is produced with a number of amplifiers in parallel determined on the basis of an average output power value and with, for each amplifier, matching circuits providing the optimum values of the setting parameters. The invention also relates to an amplification stage produced in this manner.

公开(公告)号：US10732295B2

公开(公告)日：2020-08-04

申请号：US15326096

申请日：2015-07-16

Applicant: CENTRE NATIONAL D'ETUDES SPATIALES

Inventor： Denis Laurichesse

IPC: G01S19/39

Abstract: The positioning receiver according to the invention comprises means for storing configuration information and information on its reception conditions, which is processed in order to calculate a current and/or predicted precision of the positioning calculation. Advantageously, at least some of this information is integrated into a variation model of a Kalman filter integrated into the receiver. The invention notably allows a more rapid convergence on a reference precision in a mono-frequency operating mode and transitions between a mono-frequency and bi-frequency mode to be smoothed. Advantageously, the precision information is delivered graphically or in numerical form to the user.

公开(公告)号：US10684329B2

公开(公告)日：2020-06-16

申请号：US14404616

申请日：2013-08-09

Applicant: AIRBUS DEFENCE AND SPACE SAS ,  CENTRE NATIONAL D'ETUDES SPATIALES CNES

Inventor： Laurent Gajewski ,  Pierre-Louis Taberna ,  Patrice Simon

IPC: G01R31/392 ,  G01R31/3842 ,  G01R31/389 ,  G06F30/20

Abstract: A method for estimating the ageing of a battery powering an electrical system. A set of data about the voltage and current across the battery terminals, in response to the current perturbations provoked during the normal operation of the battery by the changes of consumption rate of the electrical system are stored. The impedance of the battery, within a predetermined frequency interval, from the voltage and current data is determined. The age of the battery as a function of the impedance is estimated by comparing the impedance with a previously stored model of evolution of this impedance with ageing.

公开(公告)号：US10466105B2

公开(公告)日：2019-11-05

申请号：US15986445

申请日：2018-05-22

Applicant: CENTRE NATIONAL D'ETUDES SPATIALES ,  Office National d'Etudes et de Recherches Aérospatiales

Inventor： Philippe Hébert ,  François Lemaître ,  Xavier Orlik ,  Thibault Dartigalongue

IPC: G01J3/427 ,  G01N21/31

Abstract: Disclosed is a remote spectroscopy device of the LIDAR type including a module for generating an emission signal, an emission module for sending the emission signal toward a targeted material, a receiving module for receiving a response signal and a module for postprocessing of the response signal to determine a composition of the targeted material. The generating module includes at least two laser sources, each laser source being able to generate a laser signal at a predetermined wavelength, an upstream mixer able to mix the laser signals generated by the different laser sources, and a first modulator able to modulate the composite signal at a first modulation frequency to form the emission signal.

公开(公告)号：US20190319327A1

公开(公告)日：2019-10-17

申请号：US16343258

申请日：2017-10-16

Applicant: Centre National d'Etudes Spatiales CNES

Inventor： Nicolas CAPET ,  Francesco FOGLIA MANZILLO ,  Karim TEKKOUK ,  Ronan SAULEAU ,  Mauro ETTORRE

IPC: H01P3/16 ,  H01P5/02

Abstract: The present disclosure relates to a multilayer electromagnetic waveguide that includes a plurality of layers forming guide channels for an electromagnetic wave, and at least one transition device including at least one dielectric layer between two guide channels, referred to as coupled guide channels, extending as an extension. Each transition device includes at least one adaptation channel extending in a longitudinal direction, and each adaptation channel is defined by two electrically conductive walls. At least one wall extends along the dielectric spacer layer from one end of the coupled guide channel, over a length suitable for optimizing the transmission of an electromagnetic wave between the two coupled guide channels.