Method of updating gps almanac data for satellites not in view

G - Physics – 01 – S

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G01S 3/02 (2006.01)

Patent

CA 2532427

A method of updating Global Positioning System almanac data includes steps for obtaining a current satellite almanac for a satellite constellation at a server in a communications infrastructure associated with a wireless device (102), creating a subset of the current satellite almanac in the server that includes satellite almanac data only for fewer than all satellites listed in the current satellite almanac (104), and transmitting the subset of the current satellite almanac from the server to the wireless device (106).

L'invention concerne un procédé de mise à jour de données d'éphémérides GPS (système mondial de positionnement) qui comprend les étapes consistant à obtenir des éphémérides de satellite courantes pour une constellation de satellites au niveau d'un serveur dans une infrasctructure de communications associée à un dispositif sans fil (102) : à créer un sous-ensemble des éphémérides de satellite courantes dans le serveur qui comprend des données d'éphémérides de satellite uniquement pour une quantité inférieure à celle représentée par tous les satellites listés dans les éphémérides de satellite courantes (104) ; et à transmettre le sous-ensemble des éphémérides de satellite courantes depuis le serveur au dispositif sans fil (106).

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