中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

218 records (took 0.022 seconds)

    Radio communication receiver cancelling out the cross polarisation of a received signal
    91.
    发明授权
    Radio communication receiver cancelling out the cross polarisation of a received signal 有权

    公开(公告)号：US10382116B2

    公开(公告)日：2019-08-13

    申请号：US16072694

    申请日：2017-01-27

    Applicant: Zodiac Data Systems ,  CENTRE NATIONAL D'ETUDES SPATIALES

    Inventor： Nicolas Pasternak ,  Alain Thomas ,  Clément Dudal ,  Mathieu Llauro ,  Jean-Pierre Millerioux

    IPC: H04L5/12 ,  H04B7/10 ,  H04B7/00 ,  H04B17/336 ,  H04B7/04

    Abstract: The invention relates to a radio communication receiver receiving a radio signal (S) including a main polarisation (MAIN-POL) and a secondary polarisation (X-POL) orthogonal to the main polarisation (MAIN-POL), the receiver including: a unit (1) for receiving the main polarisation (MAIN-POL) and the secondary polarisation of the received signal, synchronised as a carrier frequency with the main polarisation (MAIN-POL); a unit (2) for cancelling out the secondary polarisation synchronised with the main polarisation (MAIN-POL) and configured to suppress, from the received signal (S), the interference due to the secondary polarisation (X-POL), the unit (2) for cancelling out the secondary polarisation including a filtering unit (21) that receives the main polarisation (MAIN-POL) and the secondary polarisation (X-POL) as input; a unit (3) for demodulating the filtered signal, located downstream of the cancellation unit and configured to calculate carrier frequency error information and to communicate same by feedback to the upstream receiving unit (1).

    Radiator deployable for a satellite stabilized on three axes
    94.
    发明授权
    Radiator deployable for a satellite stabilized on three axes 有权

    公开(公告)号：US10207824B2

    公开(公告)日：2019-02-19

    申请号：US15103834

    申请日：2014-12-15

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

    Inventor： Jérôme Lemaire ,  Yann Miegeville

    IPC: B64G1/44 ,  B64G1/22 ,  B64G1/50 ,  B64G1/66 ,  F28D15/00 ,  F28D15/02 ,  F28F1/00 ,  F28D21/00

    Abstract: A photovoltaic generator deployable for a satellite stabilized on three axes. The photovoltaic generator includes an assembly of planar panels articulated with respect to each other, and an attachment arm to the structure of the body of the satellite. In a first or launch position of the photovoltaic generator, the planar panels are folded one over the other. In a second or deployed position of the photovoltaic generator, the planar panels are fully deployed with at least a part of the planar panels being photovoltaic panels. At least one planar panel consists of a thermal radiator, with the radiative face thereof being orientated to be opposite the face of the photovoltaic panels carrying the photovoltaic sensors when the photovoltaic generator is in the deployed position. This radiative face is termed the “shade” face, and the face opposite the panel shaped radiator is termed the “sun” face.

    GNSS receiver calculating a non-ambiguous discriminator to resolve subcarrier tracking ambiguities
    95.
    发明授权
    GNSS receiver calculating a non-ambiguous discriminator to resolve subcarrier tracking ambiguities 有权

    公开(公告)号：US10191158B2

    公开(公告)日：2019-01-29

    申请号：US15200186

    申请日：2016-07-01

    Applicant: CENTRE NATIONAL D'ETUDES SPATIALES ,  M3 SYSTEMS

    Inventor： Nabil Jardak ,  Willy Vigneau ,  François-Xavier Marmet ,  Lionel Ries

    IPC: G01S19/30 ,  G01S19/22

    Abstract: A receiver, and associated process, for tracking a GNSS positioning signal comprising a carrier modulated by a subcarrier and a spreading code, the receiver comprising: at least one tracking loop configured to calculate a first pseudo range from said GNSS positioning signal, a first discrimination circuit (521) configured to calculate an ambiguous discriminator value from the subcarrier and the spreading code of said GNSS positioning signal, a calculation circuit (522) configured to calculate a value representative of a tracking error of said tracking loop, a second discrimination circuit (530) configured to select one of said ambiguous discriminator value and said value calculated by the calculation circuit, and to generate a first non-ambiguous discriminator value, an amplitude of which is based on an amplitude of the selected value, and a sign of which is a sign of said value calculated by the calculation circuit.

    SIMPLIFIED GNSS RECEIVER WITH IMPROVED PRECISION IN A PERTURBATED ENVIRONMENT
    98.
    发明申请
    SIMPLIFIED GNSS RECEIVER WITH IMPROVED PRECISION IN A PERTURBATED ENVIRONMENT 审中-公开

    公开(公告)号：US20180180741A1

    公开(公告)日：2018-06-28

    申请号：US15846325

    申请日：2017-12-19

    Applicant: CENTRE NATIONAL D'ETUDES SPATIALES

    Inventor： Nicolas CAPET ,  François-Xavier MARMET

    IPC: G01S19/22 ,  G01S19/24 ,  H01Q1/32

    CPC classification number: G01S19/22 ,  G01S19/24 ,  H01Q1/3233 ,  H01Q3/24 ,  H01Q3/30 ,  H01Q21/061 ,  H01Q21/065 ,  H01Q21/08 ,  H01Q25/002

    Abstract: The invention discloses an antenna assembly that may be connected to a standard GNSS receiver. The antenna assembly comprises antenna elements that are configured to shape a radiating pattern which is directional in a direction of movement of the GNSS receiver and which has a FOV above the receiver that may be limited. The signals received in LOS will then have a much better C/N0 than the Non-LOS signals. In some embodiments, the FOV may be twisted leftwards or rightwards depending on a configuration of a vehicle carrying the receiver. In some embodiments, the antenna assembly is capable of operating in a plurality of modes that will differ notably by the FOV of the radiating pattern above the receiver. Switching between modes may be triggered manually or automatically and may be based on a determination of the prevalence and/or type of multipath reflections in the area where the rover moves. This determination may be based on sensor processing or a determination of a coarse position that will give to an index of multipath reflections from a database and/or a map.

    Satellite with variable master cross section
    99.
    发明授权
    Satellite with variable master cross section 有权

    公开(公告)号：US09944411B2

    公开(公告)日：2018-04-17

    申请号：US14791083

    申请日：2015-07-02

    Applicant: THALES ,  CENTRE NATIONAL D'ETUDES SPATIALES

    Inventor： Isabelle Nann ,  Nicolas Mosson

    IPC: B64G1/10 ,  B64G1/44

    CPC classification number: B64G1/1007 ,  B64G1/10 ,  B64G1/443 ,  B64G2001/1092

    Abstract: A satellite comprises at least one first communication module, a repeater module, one or more antennas, at least one propulsion module and an avionics module, the repeater module comprising: a north first panel when the satellite is in an orbital position, an east second panel, a south third panel and a west fourth panel arranged respectively opposite the north first panel and the east second panel, the north panel and the south panel having widths XmcR in the east-west direction, the east panel and the west panel having a width or YmcR in the north-south direction; characterized in that: the value of the ratio XmcR/YmcR for the repeater module lies within the interval [0.84; 1.12], and the repeater module consists of a number of floors, and the value of Xmck varies as a function of the floor k and of its position in the repeater module.

    METHOD AND DEVICE FOR CHARACTERISING OPTICAL ABERRATIONS OF AN OPTICAL SYSTEM
    100.
    发明申请
    METHOD AND DEVICE FOR CHARACTERISING OPTICAL ABERRATIONS OF AN OPTICAL SYSTEM 审中-公开

    公开(公告)号：US20180067017A1

    公开(公告)日：2018-03-08

    申请号：US15685832

    申请日：2017-08-24

    Applicant: CENTRE NATIONAL D'ETUDES SPATIALES

    Inventor： Jean-Marc DELVIT ,  Christophe LATRY ,  Carole THIEBAUT ,  Gwendoline BLANCHET

    IPC: G01M11/02

    CPC classification number: G01M11/0264 ,  G01J3/0297 ,  G01J3/28 ,  G01J3/2823 ,  G01J2003/2826 ,  G01M11/0207 ,  G01M11/0292

    Abstract: The invention relates to a method and device for characterising at least one optical aberration of an optical system of an image acquisition device, the optical system having an associated optical transfer function that is dependent on the aberrations, the image acquisition device being capable of acquiring at least two images in a field of image capture in a manner so as to introduce a differential aberration between the two images, each image being defined by a digital image signal. The method includes the obtaining (50) of a first image and a second image of a same given zone of the field of image capture, the second image being acquired with a differential aberration (Δaberr) relative to the first image, each image acquisition having an associated optical transfer function. An optical aberration is characterised (58, 60) by the calculation of at least one parameter by minimisation of a functional expressed as a function of the first and second images acquired, from a modelling of the optical transfer functions associated with the two image acquisitions dependent on the aberrations of the image acquisition device as well as on the differential aberration (Δaberr).

Patent Agency Ranking