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.