Enhancement of gnss position determination in poor signal...

G - Physics – 01 – S

Patent

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G01S 5/14 (2006.01) G01S 5/10 (2006.01)

Patent

CA 2647555

A system, for enhancing location estimates by movable rovers that use receivers for processing ranging signals from orbiting satellites, including a fixed base station that serves as a ranging signal source for the rovers' receivers. The base station may also determine and transmit the azimuthal angles of the respective rovers. The rovers use this information, along with a calculated or transmitted ranges to the base station to calculate the ranging system times at the locations of the rovers. Further, the rovers may use the information along with signals from satellites in view to determine position.

Un système, conçu pour améliorer les estimations d'emplacement au moyen de rovers mobiles utilisés par les récepteurs pour traiter des signaux de mesure de distance provenant de satellites sur orbites, comporte une station de base fixe utilisée comme source de signal de mesure de distance pour les récepteurs des rovers. La station de base peut également déterminer et transmettre les angles avec l'azimut des rovers respectifs. Les rovers utilisent ces informations associées à une distance calculée ou transmise à la station de base pour calculer les temps des système de mesure de distance au niveau des emplacements des rovers. Les rovers peuvent également utiliser les informations associées aux signaux provenant des satellites afin de déterminer une position.

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