Method and system for managing and detecting multiple routes...

Details Method and system for managing and detecting multiple routes... Method and system for managing and detecting multiple routes...

G - Physics

01

S

G01S 5/14 (2006.01)

Patent

CA 2700705

According to a first aspect, the invention relates to a method for controlling the navigation system of a carrier (P) receiving signals from a plurality of transmitters (T1-T3) and capable of measuring a pseudo-distance to each transmitter, wherein the elevation of each of the transmitters (T1-T3) is controlled relative to the horizontal (H) of the carrier (P), and a navigation solution is developed from the pseudo-distances (Pd-a) for which the elevation of the corresponding transmitter is higher than a minimum elevation (Em), characterised in that it comprises carrying out a discrimination of the multiple routes from the pseudo-distances (formula I) measured for the transmitters (T3) having an elevation lower than the minimum elevation (Em), and further retaining, during the development of the navigation solution, the pseudo-distances (Pd-ad) authorised after said discrimination. The invention also relates to a navigation system capable of implementing the method according to the first aspect of the invention.

L'invention concerne selon un premier aspect un procédé de contrôle d'un système de navigation de porteur (P) recevant des signaux en provenance d'une pluralité de transmetteurs (T1-T3) et étant apte à mesurer une pseudo-distance à chaque transmetteur, dans lequel on contrôle l'élévation de chacun des transmetteurs (T1-T3) par rapport à l'horizontale (H) du porteur (P) et on élabore une solution de navigation à partir des pseudodistances (Pd-a) pour lesquelles l'élévation du transmetteur correspondant est supérieure à une élévation minimale (Em), caractérisé en ce que l'on réalise une discrimination des multitrajets parmi les pseudo--distances, formule (I), mesurées pour les transmetteurs (T3) dont l'élévation est inférieure à l'élévation minimale (Em), et on retient en outre dans l'élaboration de la solution de navigation les pseudo-distances (Pd- ad) autorisées après ladite discrimination. L'invention concerne également un système de navigation apte à mettre en oeuvre le procédé selon le premier aspect de l'invention.

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