G - Physics – 01 – S
Patent
G - Physics
01
S
G01S 1/00 (2006.01) G01S 1/02 (2006.01)
Patent
CA 2465764
The invention relates to a method for the ground-based monitoring of EWF-type anomalies in a positioning satellite signal. The inventive method is particularly suitable for use in making GPS and SBAS satellite positioning signals reliable. Said method consists in performing an instantaneous statistical analysis (for approximately 1mn) of the correlation peak of the satellite signal receiver and comparing same to a long-term statistical analysis (several hours) by choosing 5 points which are characteristic of the peak (prompt, .plusmn. 0.044 et .plusmn. 0.088). If the result of the comparison is greater than a determined threshold, the corresponding signals are rejected.
Le procédé de l'invention, applicable en particulier à la fiabilisation des signaux de localisation de satellites GPS et SBAS, consiste à faire une analyse statistique instantanée (pendant environ 1 mn) du pic de corrélation du récepteur de signaux de satellites et à la comparer à une analyse statistique à long terme (plusieurs heures) en choisissant 5 points caractéristiques du pic (prompt, .plusmn. 0,044 et .plusmn. 0,088). Si le résultat de la comparaison est supérieur à un seuil déterminé, on rejette les signaux correspondants.
Goudreau Gage Dubuc
Thales
LandOfFree
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