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公开(公告)号：WO2019141849A1
公开(公告)日：2019-07-25
申请号：PCT/EP2019/051393
申请日：2019-01-21
Applicant: CENTRE NATIONAL D'ETUDES SPATIALES
Inventor： CAPET, Nicolas , MARMET, François-Xavier
CPC classification number: G01S5/0009 , G01S5/0226 , G01S5/0252 , G01S5/0289 , G01S5/0294 , G01S5/08 , G01S5/10 , G01S5/12 , G01S5/14 , G01S5/16
Abstract: There is disclosed a system for locating an object on a surface waveguide. The surface waveguide is made of one or more 1D wires and/or 2D waveguides comprising conductive elements arranged in patterns. Emitters with known positions can couple with receivers coupled with the surface waveguide. The position of receivers can be determined, for example by multilateration or signal strength indication. Conductive elements can be sprayed or sewed or otherwise deposited onto surfaces such as a ground floor, a sidewalk or a road lane. Described developments comprise the use of absorbers, protective layers, unidirectional emitters, contactless coupling, and various arrangements comprising frequency-selective layers, arrangements in lattices, treillis or anisotropic surfaces. Signal processing aspects and software embodiments are also described.
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公开(公告)号：WO2019129690A1
公开(公告)日：2019-07-04
申请号：PCT/EP2018/086514
申请日：2018-12-21
Applicant: CENTRE NATIONAL D'ETUDES SPATIALES
Inventor： ROUCH, Cédric , LAURICHESSE, Denis , MARMET, François-Xavier
Abstract: There is disclosed a positioning device comprising: a first GNSS receiver (101); a communication link configured to receive a spatial position, code measurements and carrier phase measurements of a second GNSS receiver (102); an input interface to a processing logic, said processing logic being configured to: calculate a position of the first positioning device from communicated data; and to estimate one or more parameters representative of multipath at the position of the first positioning device; wherein the communication link is configured to communicate to a second positioning device said parameters representative of multipath at the position of the first positioning device. Described developments comprise the use of multipath severity indicators, the determination of relative distances between receivers, validity conditions in time and/or space of multipath, various embodiments in a train or in a group of vehicles. Software aspects are discussed.
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公开(公告)号：WO2017167791A1
公开(公告)日：2017-10-05
申请号：PCT/EP2017/057377
申请日：2017-03-29
Applicant: CENTRE NATIONAL D'ETUDES SPATIALES
Inventor： MARMET, François-Xavier
CPC classification number: G01S19/426 , G01S19/22 , G01S19/32 , G01S19/52
Abstract: The invention discloses an improved GNSS receiver which determines a location of the receiver by combining a first location determined from the standard PVT and a second location determined by integrating the velocity from the standard PVT. The combination is based on a weighting of the error budgets of the first location and the second location. The improved receiver is preferably based on a standard receiver with an add-on software module which receives and processes data transmitted from the standard receiver by, for example, NMEA messages. The improved receiver allows a determination of a more precise and smoother trajectory in a simple way.
Abstract translation: 本发明公开了一种改进的GNSS接收器，其通过组合由标准PVT确定的第一位置和通过对来自标准PVT的速度进行积分确定的第二位置来确定接收器的位置。 该组合基于第一位置和第二位置的错误预算的权重。 改进的接收机优选地基于具有附加软件模块的标准接收机，附加软件模块通过例如NMEA消息接收和处理从标准接收机发送的数据。 改进的接收器可以以简单的方式确定更精确和更平滑的轨迹。
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4.发明申请
公开(公告)号：WO2019129513A1
公开(公告)日：2019-07-04
申请号：PCT/EP2018/085059
申请日：2018-12-14
Applicant: CENTRE NATIONAL D'ETUDES SPATIALES
Inventor： CAPET, Nicolas , MARMET, François-Xavier
Abstract: The invention discloses an antenna assembly configured to transmit terrestrial positioning signals from a relay platform having a frame of reference (x, y, z), said transmit being in at least a first mode with a radiating pattern having at least a main lobe having a narrow aperture in a (x, z) plane and a wide aperture in a (y, z) plane. It also discloses a relay platform comprising a receiver of a synchronization signal, a transmitter of positioning signals to an area of service comprising a number of rovers, and an antenna assembly configured to produce a radiating pattern adapted to transmit the positioning signals as a function of the environment of the relay platform and the rovers. In a number of embodiments the relay platforms may be organized in a network of platforms, possibly of masters and slaves that receive feed-back from the rovers in the AoS so as to optimize the configuration of the antenna elements dynamically to optimize the QoS of positioning based on a number of selected quality indexes.
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公开(公告)号：WO2018115465A1
公开(公告)日：2018-06-28
申请号：PCT/EP2017/084430
申请日：2017-12-22
Applicant: CENTRE NATIONAL D'ETUDES SPATIALES
Inventor： MARMET, François-Xavier , ROUCH, Cédric
IPC: G01S19/03
Abstract: There is disclosed a device for handling multipath of a G.N.S.S. signal, said device being configured to: - determine a spatial position, a clock time and measured multipath parameters comprising a relative delay and relative amplitude; - communicate to a remote server said spatial position, clock time and multipath parameters; and - receive processed multipath parameters as determined by the remote server. Systems comprising a plurality of such devices and their variants are described. Further aspects are described, in particular the exclusion of one or more satellites, the use of threshold schemes, pull/push modes, configurable refresh rates, quantization of positions, activation of additional sensors, filtering options, determination of merit factors for example as a function of the number of satellites in view and/or of signal-to-noise ratio, peer-to-peer schemes, as well as graphical display, audible sound or haptic feedbacks.
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Patent Agency Ranking
公开(公告)号：WO2019145220A1
公开(公告)日：2019-08-01
申请号：PCT/EP2019/051187
申请日：2019-01-17
Applicant: CENTRE NATIONAL D'ETUDES SPATIALES
Inventor： MARMET, François-Xavier
IPC: G01S19/24
CPC classification number: G01S19/24
Abstract: The present invention generally relates to Global Navigation Satellite System (GNSS) positioning techniques. More particularly, it relates to a method to improve the time required to compute a position measurement in a GNSS receiver, and the time required to make this position measurement accurate. The method comprises computing a snapshot PVT (Position Velocity and Time) measurement, and use it to reduce the time required to acquire new signals to compute a conventional PVT measurement. It also relates to a receiver implementing the method.
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7.发明申请IMPROVED GNSS RECEIVER USING A COMBINATION OF VELOCITY INTEGRATION AND PRECISE POINT POSITIONING 审中-公开利用速度积分和精确点定位相结合改进GNSS接收机
公开(公告)号：WO2017167943A1
公开(公告)日：2017-10-05
申请号：PCT/EP2017/057645
申请日：2017-03-31
Applicant: CENTRE NATIONAL D'ETUDES SPATIALES
Inventor： RIES, Lionel , MARMET, François-Xavier , LAURICHESSE, Denis
CPC classification number: G01S19/426 , G01S19/22 , G01S19/32 , G01S19/52
Abstract: The invention discloses an improved GNSS receiver which determines a location of the receiver by combining a first location determined from the standard PVT of a multi-frequency receiver and a second location determined by integrating the velocity from the standard PVT. The combination is based on a duty cycle or a combination of the duty cycle with a weighting of the error budgets of the first position and the second location. The improved receiver is preferably based on a standard receiver with an add-on software module which receives and processes data transmitted from the standard receiver by, for example, NMEA messages. The improved receiver allows a determination of a more precise and smoother trajectory in a simple way.
Abstract translation: 本发明公开了一种改进的GNSS接收器，其通过组合从多频接收器的标准PVT确定的第一位置和通过对来自标准的PVT的标准速度进行积分而确定的第二位置来确定接收器的位置 PVT。 该组合基于占空比或占空比与第一位置和第二位置的误差预算的权重的组合。 改进的接收机优选地基于具有附加软件模块的标准接收机，附加软件模块通过例如NMEA消息接收和处理从标准接收机发送的数据。 改进的接收器可以以简单的方式确定更精确和更平滑的轨迹。
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公开(公告)号：WO2019129583A1
公开(公告)日：2019-07-04
申请号：PCT/EP2018/085944
申请日：2018-12-19
Applicant: CENTRE NATIONAL D'ETUDES SPATIALES
Inventor： MARMET, François-Xavier
CPC classification number: G06T11/00 , G01C21/3647 , G06Q30/0241
Abstract: The invention relates to a user computing device, method and computer program to display a view to the user. The invention allows a user to display a number of different views with photorealistic rendering of how the view should look like at a view time, based solely on view position, and descriptors of the view. In an aspect, the invention deduces from view position and view time the view descriptors (weather parameters, traffic parameters...); selects, in a collection of images, an image of the view based on view position; modifies the image to match descriptors of the view (for example, by adding a rain effect if the image in the collection is under sunshine and the view should be displayed under rain). Thus, the invention allows displaying photorealistic images of how a view should look like at any time.
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公开(公告)号：WO2019121135A1
公开(公告)日：2019-06-27
申请号：PCT/EP2018/084271
申请日：2018-12-11
Applicant: CENTRE NATIONAL D'ETUDES SPATIALES
Inventor： MARMET, François-Xavier
IPC: G01S19/21
CPC classification number: G01S19/215
Abstract: The invention concerns a device and the associated method for detecting spoofing of GNSS signals. The device comprises: - an RF chain (311) to acquire and down convert a signal comprising one or more GNSS signals transmitted by GNSS sources, each of said GNSS signals comprising a navigation message modulated by a spreading code associated to a related GNSS source, - an analog to digital converter, to digitize the down converted signal, and - a computer logic (312), to: ∘ calculate over a grid of spreading code phase delays and Doppler shifts, cross-correlation functions between said digitized signal and locally generated replicas of the signal, for one or more of said spreading codes, ∘ identify cross-correlation peaks, and ∘ analyze the cross-correlation peaks to detect spoofing situations.
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公开(公告)号：WO2019101592A1
公开(公告)日：2019-05-31
申请号：PCT/EP2018/081191
申请日：2018-11-14
Applicant: CENTRE NATIONAL D'ETUDES SPATIALES
Inventor： CAPET, Nicolas , MARMET, François-Xavier
Abstract: The invention refers to an add-on device configured to reduce the power level of reflected paths of GNSS signals (612, 613) reaching a GNSS receiver's antenna, the associated GNSS receiver set, some equipment embedding the add-on device, and the associated method to reduce the power level of reflected GNSS signals. The GNSS signals are transmitted according to a first polarization, and the add-on device comprises a material (601) configured to be transparent to said first polarization and to reflect GNSS signals polarized according to a second polarization orthogonal to said first polarization.
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