Satellite-based positioning system receiver for weak signal...

Details Satellite-based positioning system receiver for weak signal... Satellite-based positioning system receiver for weak signal...

G - Physics

01

S

G01S 5/14 (2006.01) G01S 1/00 (2006.01)

Patent

CA 2411607

A method, device and system for determining a receiver location using weak signal satellite transmissions. The invention involves a sequence of exchanges between an aiding source and a receiver that serve to provide aiding information to the receiver so that the receiver's location may be determined in the presence of weak satellite transmissions. With the aiding information, the novel receiver detects, acquires and tracks weak satellite signals and computes position solutions from calculated pseudo ranges despite the inability to extract time synchronization date from the weak satellite signals.

L'invention concerne un procédé, un dispositif et un système destinés à déterminer un emplacement de récepteur par satellite avec émissions à signal faible. Le procédé consiste à mettre en oeuvre une séquence d'échanges entre une source additive et un récepteur fournissant une information additive au récepteur de façon que l'emplacement du récepteur puisse être déterminé en présence d'émissions satellite faibles. Avec l'information additive, le récepteur détecte, acquiert et suit les signaux satellite faibles et calcule des solutions de position à partir de distances fictives calculées malgré l'incapacité à réaliser un extraction de date de synchronisation temporelle à partir des signaux satellite faibles.

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