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1. WO2020079288 - METHOD AND DEVICE PROVIDING UNINTERRUPTED GEOLOCATION SERVICE INSIDE BUILDINGS FOR TERMINALS USING GNSS SIGNALS

Publication Number WO/2020/079288
Publication Date 23.04.2020
International Application No. PCT/EP2019/082649
International Filing Date 27.11.2019
IPC
G01S 19/11 2010.01
GPHYSICS
01MEASURING; TESTING
SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
19Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
01Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS , GLONASS or GALILEO
03Cooperating elements; Interaction or communication between different cooperating elements or between cooperating elements and receivers
10providing dedicated supplementary positioning signals
11wherein the cooperating elements are pseudolites or satellite radio beacon positioning system signal repeaters
CPC
G01S 19/11
GPHYSICS
01MEASURING; TESTING
SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
19Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
01Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
03Cooperating elements; Interaction or communication between different cooperating elements or between cooperating elements and receivers
10providing dedicated supplementary positioning signals
11wherein the cooperating elements are pseudolites or satellite radio beacon positioning system signal repeaters
Applicants
  • LES INTELLIGENCES NATURELLES [FR]/[FR]
Inventors
  • LEGRAND, Fabrice
Priority Data
18020473.728.09.2018EP
Publication Language French (FR)
Filing Language French (FR)
Designated States
Title
(EN) METHOD AND DEVICE PROVIDING UNINTERRUPTED GEOLOCATION SERVICE INSIDE BUILDINGS FOR TERMINALS USING GNSS SIGNALS
(FR) PROCÉDÉ ET DISPOSITIF PERMETTANT LA CONTINUITÉ DU SERVICE DE GÉOLOCALISATION À L'INTÉRIEUR DES BÂTIMENTS POUR LES TERMINAUX UTILISANT LES SIGNAUX GNSS
Abstract
(EN)
The invention relates to a method and device providing uninterrupted GNSS geolocation service in areas with weak or no GNSS signal reception. The device consists of a network of terminals emitting radio signals compatible with standard GNSS receivers. The terminals are controlled such as to produce synthetic signals having the characteristics of real GNSS signals that would be received if they were not masked. The terminals use multibeam antennas controlled such that the combination of waves emitted by the network produces signals having flat wavefronts and phase characteristics identical to those of real signals at every point in space, thereby allowing the GNSS receivers to provide uninterrupted geolocation service. The invention is particularly suitable for geolocation inside buildings or any area with limited or no GNSS satellite visibility.
(FR)
L'invention concerne un procédé et un dispositif permettant la continuité du service de géolocalisation par GNSS dans des zones de faible ou de non-réception des signaux GNSS. Le dispositif est constitué d'un réseau de bornes émettant des signaux radioélectriques compatibles des récepteurs GNSS standards. Les bornes sont commandées de façon à produire des signaux synthétiques ayant les caractéristiques des signaux GNSS réels qui seraient reçus s'ils n'étaient pas masqués. Les bornes mettent en œuvre des antennes multifaisceaux commandées de sorte que la combinaison des ondes émises par le réseau produise des signaux ayant des fronts d'ondes plans et des caractéristiques de phase identiques à celles des signaux réels en tout point de l'espace, permettant ainsi aux récepteurs GNSS d'assurer la continuité de leur service de géolocalisation. L'invention est particulièrement destinée à la géolocalisation à l'intérieur de bâtiments ou de toute zone de faible ou de non-visibilité des satellites GNSS.
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