公开(公告)号：US20180143328A1

公开(公告)日：2018-05-24

申请号：US15794695

申请日：2017-10-26

Applicant: CENTRE NATIONAL D'ETUDES SPATIALES

Inventor： Lionel RIES ,  François-Xavier MARMET

IPC: G01S19/51 ,  H04W64/00

CPC classification number: G01S19/51 ,  G01S19/11 ,  G01S19/12 ,  G01S19/428 ,  G01S19/46 ,  H04W64/00 ,  H04W64/003 ,  H04W88/08

Abstract: The invention relates to an access point for transmitting non-GNSS signals using a wireless RF communication standard, the access point being further configured to transmit GNSS-like signals in at least one communication channel dedicated to the transmission of non-GNSS signals; an access point infrastructure comprising at least one of said access points; and a receiver for receiving GNSS and non-GNSS wireless signals, the receiver being further configured to receive at least one GNSS-like signal in a communication channel dedicated to said non-GNSS wireless signal, and to use said GNSS-like signal to determine its position. The invention further relates to a positioning system comprising at least one receiver in said access point architecture and an associated method for determining a position.

公开(公告)号：US20180114441A1

公开(公告)日：2018-04-26

申请号：US15788924

申请日：2017-10-20

Applicant: CENTRE NATIONAL D'ETUDES SPATIALES

Inventor： François-Xavier MARMET ,  Lionel RIES ,  Nicolas CAPET

IPC: G08G1/16 ,  G01C21/30 ,  G01S19/51

CPC classification number: G08G1/163 ,  G01C21/30 ,  G01S5/0072 ,  G01S5/0257 ,  G01S19/48 ,  G01S19/51 ,  G08G1/09675 ,  H04L67/26 ,  H04W4/024 ,  H04W4/027 ,  H04W4/44 ,  H04W4/46

Abstract: The invention discloses a positioning device configured to acquire its own GNSS position, the GNSS positions of rovers in an area around the positioning device and the relative positions of the positioning device to the rovers. The positioning device is configured to calculate a best-fit position based on this data and their confidence indexes. The positioning devices may communicate directly or through a navigation assistance centre. The best-fit position may be provided with indexes of confidence, availability and integrity. In some embodiments, the positioning device of the invention may be robust enough to generate commands to the driving controls of an autonomous vehicle.

公开(公告)号：US09846243B2

公开(公告)日：2017-12-19

申请号：US14388806

申请日：2013-03-28

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

Inventor： Renaud Broquet ,  Bernard Polle ,  Johan Montel

IPC: G01S19/55 ,  G01S3/46 ,  G01S19/54 ,  G01S3/48 ,  G01S19/53 ,  G01S5/06 ,  G01S5/02 ,  G01S19/22

CPC classification number: G01S19/55 ,  G01S3/46 ,  G01S3/48 ,  G01S5/0247 ,  G01S5/06 ,  G01S19/22 ,  G01S19/53 ,  G01S19/54

Abstract: A method for calibrating spatial errors induced by phase biases having a detrimental effect on the measurements of phase differences of radio signals received by three unaligned receiving antennas of a vehicle. An inter-satellite angular deviation of a pair of satellites is estimated in two different ways: on the basis of the respective positions of the vehicle and of the satellites to obtain a theoretical inter-satellite angular deviation; and on the basis of the respective directions of incidence of the satellites relative to the vehicle, which are determined from phase measurements, to obtain an estimated inter-satellite angular deviation. The space errors are estimated on the basis of said theoretical and estimated inter-satellite angular deviations. Also, a method and system for estimating the attitude of a vehicle, in particular a spacecraft.

公开(公告)号：US20170285171A1

公开(公告)日：2017-10-05

申请号：US15508376

申请日：2015-09-02

Applicant: CENTRE NATIONAL D'ETUDES SPATIALES

Inventor： Lionel RIES

IPC: G01S19/21

Abstract: The positioning signals broadcast by the GNSS constellations on civilian frequencies are likely to be counterfeited, while the use of authentic signals is becoming increasingly critical for certain applications. According to the invention, the authentication of GNSS signals is performed by analysis of consistency between the measurements of parameters characteristic of the signals (direction of arrival, amplitude, phase) and their state model, said state model taking account of an emulation by software and electronic means of displacements of the phase centre of the antenna and/or of the main lobe of the radiation pattern. Advantageously, these displacements are generated by a pseudo-random code. Advantageously, the analysis of consistency between measurements and models is a multiple-criterion analysis, the combination of criteria being chosen as a function of a reception quality indicator and/or of a presumed location.

公开(公告)号：US20170184725A1

公开(公告)日：2017-06-29

申请号：US15373651

申请日：2016-12-09

Applicant: CENTRE NATIONAL D'ETUDES SPATIALES

Inventor： Francois-Xavier MARMET ,  Lionel RIES ,  Jacques BAES- GARCIA ,  Gaël SCOT ,  Marion AUBAULT

IPC: G01S19/26 ,  G01S19/17 ,  H04W4/00

CPC classification number: G01S19/26 ,  A63B29/021 ,  G01S5/0284 ,  G01S5/18 ,  G01S5/30 ,  G01S19/17 ,  G01S19/49 ,  G01S19/51 ,  H04W4/80

Abstract: The invention discloses a recovery assistance device for helping in rescuing victims of avalanches, earthquakes or boat capsizes. The device is capable of calculating a position from combinations of a previous position and distances to other devices. Different configurations are possible, with a basic configuration consisting of a smart phone having waveform generation capabilities, processing and GNSS receiving capabilities. The device is programmed to be used in a defined mission by an application. The device can also receive a number of add-ons as a battery add-on, a modem add-on, a sound wave generation add-on, antennas, and protection, possibly waterproof, if adequate. Devices of the same type can be carried by people to be rescued and rescuers. The device is therefore quite versatile and can increase significantly the efficiency of rescue teams in different use case scenarios.

公开(公告)号：US20170150425A1

公开(公告)日：2017-05-25

申请号：US15309637

申请日：2015-05-13

Applicant: CENTRE NATIONAL D'ETUDES SPATIALES

Inventor： Jacques BEAS-GARCIA

IPC: H04W48/16 ,  H04W64/00 ,  H04W76/02 ,  H04W48/18

CPC classification number: H04W48/16 ,  G01C21/3476 ,  H04W24/02 ,  H04W48/18 ,  H04W64/00 ,  H04W64/006 ,  H04W76/10 ,  H04W88/06

Abstract: This system includes: —a database including maps, each map being associated with an infrastructure from a plurality of available infrastructures and providing, at each point of a geographical zone, a local value of a property relative to a quality of experience associated with the execution of an application accessing a remote resource through the infrastructure; a localization element generating a current position of the mobile terminal; a selection element for selecting a trajectory; a correlation element able, from the current position, the selected trajectory, and each map, to determine a correlation coefficient; and a selection unit able, based on the correlation coefficients, to select an infrastructure from among the plurality of infrastructures.

公开(公告)号：US20170137152A1

公开(公告)日：2017-05-18

申请号：US15353388

申请日：2016-11-16

Applicant: CENTRE NATIONAL D'ETUDES SPATIALES

Inventor： Christophe Bonnal

IPC: B64G1/40

CPC classification number: B64G1/403 ,  B64G1/002 ,  B64G1/005 ,  B64G1/242 ,  B64G1/404 ,  B64G1/56 ,  B64G1/66

Abstract: The invention relates to a method for deflecting space debris comprising steps of: launching (E2) a thruster (2) by means of a sounding rocket (1) at a target altitude close to that of the one or more debris to be deflected. generating (E3) by the thruster a gas cloud (G) above the sounding rocket.

公开(公告)号：US20170099067A1

公开(公告)日：2017-04-06

申请号：US14876372

申请日：2015-10-06

Applicant: CENTRE NATIONAL D'ETUDES SPATIALES

Inventor： Guillaume Smith ,  Jerome LACAN ,  Laurence CLARAC

IPC: H03M13/17 ,  H04L1/00

CPC classification number: H03M13/17 ,  H03M13/13 ,  H04L1/0041 ,  H04L1/0056 ,  H04L1/0057

Abstract: A process of encoding information data in a sequence of bursts ( . . . , Bi-2, Bi-1 Bi, Bi+1, . . . ), each burst comprising a block of information symbols and a block of redundancy symbols. The block of redundancy symbols (R,) of the current burst (B,) of the sequence is generated by calculating a sum of a series of coding values relating to a series of bursts (Bi-2, Bi-1), each coding value of the series of coding values being obtained by a respective coding function applied to the block of information symbols of the corresponding burst of the series of bursts.

公开(公告)号：US20170081050A1

公开(公告)日：2017-03-23

申请号：US15267737

申请日：2016-09-16

Applicant: THALES ,  CENTRE NATIONAL D'ETUDES SPATIALES

Inventor： Gilles GANS ,  Xavier JEANDOT ,  Gilles CARTE

IPC: B64G1/28 ,  G01C19/32 ,  G01C19/26 ,  B64G1/10 ,  G01C19/16

CPC classification number: B64G1/286 ,  B64G1/10 ,  B64G2001/228 ,  G01C19/16 ,  G01C19/26 ,  G01C19/32

Abstract: A dual guidance gyroscopic actuator comprises, a main structure connected to a platform, connected to a satellite, a ring, a U-shaped cradle, having first and second ends and a central part, a flywheel mounted on the central part between the first and second ends, being rotationally mobile with respect to the cradle about a first axis. A first bearing is positioned at the first end and a second bearing is positioned at the second end connecting the ring to the cradle, the first and second bearings rendering the cradle rotationally mobile with respect to the ring about a second axis substantially perpendicular to the first axis. The ring is connected to the main structure. The gyroscopic actuator comprises at least one suspension element limiting microvibrations from the cradle and flywheel and at least one end-stop element limiting travel cradle and of the flywheel with respect to the main structure.

公开(公告)号：US20170058836A1

公开(公告)日：2017-03-02

申请号：US15348691

申请日：2016-11-10

Applicant: SNECMA ,  CENTRE NATIONAL D'ETUDES SPATIALES CNES

Inventor： Alain KERNILIS ,  Nicolas LEMOINE ,  Ludivine BOULET ,  Serge LE GONIDEC

IPC: F02K9/56 ,  B64G1/40 ,  F02K9/96 ,  F02K9/50 ,  F02K9/52

CPC classification number: F02K9/566 ,  B64G1/401 ,  F02K9/50 ,  F02K9/52 ,  F02K9/56 ,  F02K9/60 ,  F02K9/96 ,  F05D2220/80 ,  F05D2270/44 ,  F05D2270/54

Abstract: A feed system for feeding a rocket engine with a liquid propellant includes a feed circuit, and a device to vary a volume of gas in the feed circuit. The device is configured to cause a volume of gas in the feed circuit to vary while the rocket engine is in operation. The device to vary gas volume includes at least one variable-flow-rate gas injector to inject gas into the liquid propellant in the feed circuit. Methods of suppressing a POGO effect are also provided.

Abstract translation: 用于向液体推进剂供给火箭发动机的进料系统包括进料回路和用于改变进料回路中气体体积的装置。 该装置被配置成在火箭发动机运行时使进料回路中的一定量的气体变化。 改变气体体积的装置包括至少一个可变流量气体注射器，以将气体注入进料回路中的液体推进剂。 还提供了抑制POGO效应的方法。