公开(公告)号：US20200292711A1

公开(公告)日：2020-09-17

申请号：US16814870

申请日：2020-03-10

Applicant: THALES

Inventor： Nicolas MARTIN ,  Daniel MILLWOOD ,  Stéphane ROLLET

IPC: G01S19/20 ,  G01S19/21

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.

公开(公告)号：US20160109578A1

公开(公告)日：2016-04-21

申请号：US14918795

申请日：2015-10-21

Applicant: THALES

Inventor： Stéphane CORAZZA ,  Stéphane ROLLET ,  Laurent PAPIN ,  Audrey GUILLOTON ,  Bruno MONTAGNE

IPC: G01S19/21 ,  G01S19/07

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 (NO), strictly greater than one.

Abstract translation: 本发明涉及一种用于卫星地理定位装置的定位测量校正消息的中断检测方法和装置，其能够接收包括由地理定位装置考虑的由卫星发射的多个信号的复合无线电信号，以及定位测量 差分校正消息（MC）由卫星定位精度增强系统发射。 根据本发明的装置（20）包括模块（32），根据从接收到的差分校正消息（MC）提取的定位测量差分校正（CAS），对于每个卫星，计算至少一个差分校正相干度量 ）。 当差分校正相干度量超过预定阈值的卫星数量超过预定数量的卫星（NO）时，设备（20）还包括检测校正消息中断的模块（34），严格地大于一 。