G - Physics – 01 – S
Patent
G - Physics
01
S
G01S 5/14 (2006.01) G01S 1/00 (2006.01)
Patent
CA 2557984
The present invention includes a method for performing backup dual-frequency navigation during a brief period when one of two frequencies relied upon by dual-frequency navigation is unavailable. The method includes synthesizing the code and carrier-phase measurements on the unavailable frequency using the carrier-phase measurements on the retained frequency and a model of ionospheric refraction effects, which is updated when measurements on both frequencies are available.
L'invention concerne un procédé servant à effectuer une navigation double fréquence de soutien pendant une période brève quand l'une de deux fréquences utilisées par la navigation double fréquence n'est pas disponible. Ce procédé consiste à exécuter la synthèse des mesures de code et de phase de porteuse sur la fréquence non disponible au moyen des mesures de phase de porteuse exécutées sur la fréquence retenue et un modèle d'effets de réfraction ionosphériques, qui sont mis à jour quand les mesures des deux fréquences sont disponibles.
Hatch Ronald R.
Nelson Frederick W.
Pickett Terence D.
Sharpe Richard T.
Yang Yunchun
Navcom Technology Inc.
Smart & Biggar
LandOfFree
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