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公开(公告)号：US11693121B2
公开(公告)日：2023-07-04
申请号：US16814870
申请日：2020-03-10
Applicant: THALES
Inventor： Nicolas Martin , Daniel Millwood , Stéphane Rollet
Abstract: A method and a function for checking the integrity of the processing of a radionavigation signal emitted by a satellite, the signal being received by a receiver comprising reception means and processing means, the processing means comprising a linear anti-interference filter, the integrity checking method comprising at least a first phase of detection of a risk of false lock-on comprising the following steps: a step of recovery of a nominal theoretical self-correlation function of the received signal not processed by the linear anti-interference filter; a step of determination of a mean theoretical self-correlation function of the signal received and processed by the linear anti-interference filter over a defined integration period; a step of determination of the number of local maxima of the modulus or of the modulus squared of the mean theoretical self-correlation function, a risk of false lock-on being detected if the number of local maxima is greater than or equal to two.
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公开(公告)号：US09977130B2
公开(公告)日：2018-05-22
申请号：US14918795
申请日：2015-10-21
Applicant: THALES
Inventor： Stéphane Corazza , Stéphane Rollet , Laurent Papin , Audrey Guilloton , Bruno Montagne
CPC classification number: G01S19/215 , G01S19/20 , G01S19/41
Abstract: The invention relates to a disruption detection method and device for a positioning measurement correction message of a satellite geolocation device, able to receive a composite radio signal including a plurality of signals each emitted by a satellite in view of the geolocation device, and a positioning measurement differential correction message (MC) emitted by a satellite geolocation precision augmentation system. The device (20) according to the invention includes modules (32) computing, for each of the satellites in view, at least one differential correction coherence metric depending on a positioning measurement differential correction (CAS) extracted from the received differential correction message (MC). The device (20) also includes a module (34) detecting a disruption of the correction message when the number of satellites for which the differential correction coherence metric is above a predetermined threshold exceeds a predetermined number of satellites (N0), strictly greater than one.
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公开(公告)号：US10466364B2
公开(公告)日：2019-11-05
申请号：US15367212
申请日：2016-12-02
Applicant: Thales
Inventor： Stéphane Rollet
IPC: G01S19/24 , H04B1/7075 , H04B1/709
Abstract: A method between a geolocation receiver and an identified transmitting satellite, the receiver being able to receive a composite radio signal including a plurality of navigation signals each transmitted by a transmitting satellite that is part of a satellite constellation, a method for validating the synchronization between a geolocation receiver and a transmitting satellite during a phase for acquiring an augmentation signal including geolocation correction and integrity data; the methods include, for each identified transmitting satellite, extracting received ephemeris words or received words of any type of the received signal associated with the identified satellite as it is received, and comparing at least one received word with at least one word of the same rank or stored for the identified satellite and/or for at least one other satellite; the validation or non-validation of the synchronization with the identified transmitting satellite depends on a predetermined false alarm probability and/or non-detection probability.
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4.发明申请公开(公告)号：US20170170866A1
公开(公告)日：2017-06-15
申请号：US15367212
申请日：2016-12-02
Applicant: Thales
Inventor： Stéphane Rollet
IPC: H04B1/709 , G01S19/20 , G01S19/23 , H04B1/7075
Abstract: A method between a geolocation receiver and an identified transmitting satellite, the receiver being able to receive a composite radio signal including a plurality of navigation signals each transmitted by a transmitting satellite that is part of a satellite constellation, a method for validating the synchronization between a geolocation receiver and a transmitting satellite during a phase for acquiring an augmentation signal including geolocation correction and integrity data; the methods include, for each identified transmitting satellite, extracting received ephemerid words or received words of any type of the received signal associated with the identified satellite as it is received, and comparing at least one received word with at least one word of the same rank or stored for the identified satellite and/or for at least one other satellite; the validation or non-validation of the synchronization with the identified transmitting satellite depends on a predetermined false alarm probability and/or non-detection probability.
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