Phase multi-path mitigation

Details Phase multi-path mitigation Phase multi-path mitigation

G - Physics

01

S

G01S 1/00 (2006.01)

Patent

CA 2583198

A system and method for mitigating a multi-path-induced error in a global navigation satellite system (GNSS) is described. In one embodiment of the method, a composite signal is received. The composite signal includes a band- limited direct-path signal and at least one band-limited multi-path signal that are each modulated with periodic phase reversals. The composite signal is measured as a function of time during a time interval having at least one of the periodic phase reversals. A phase error .phi..epsilon., between the composite signal and the direct~ path signal due to the multi-path signal is determined using the measured composite signal as a function of time and a pre- determined filter characteristic corresponding to a filter used to band limit the direct-path signal and the multi-path signal. The phase error .phi..epsilon., in a navigation computation is corrected.

L'invention concerne un système et un procédé d'atténuation d'une erreur multivoie dans un système satellite de navigation globale (GNSS). Dans un mode de réalisation, ledit procédé consiste à recevoir un signal composite contenant un signal de voie directe à bande limitée et au moins un signal multivoie à bande limitée, tous deux modulés avec des inversions de phase périodiques. Le signal composite est mesuré en tant que fonction du temps au cours d'un intervalle de temps contenant au moins une inversion de phase périodique. Une erreur de phase fe entre le signal composite et le signal de voie directe due au signal multivoie est déterminée au moyen du signal composite mesuré en tant que fonction du temps et d'une caractéristique de filtre prédéterminée correspondant à un filtre employé pour limiter la bande du signal de bande directe et du signal multivoie. L'erreur de phase feest corrigée dans un calcul de navigation.

Affiliated with

Also associated with

Rating

Phase multi-path mitigation does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Phase multi-path mitigation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Phase multi-path mitigation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1775022