Systems and methods for acquisition and tracking of low cnr...

G - Physics – 01 – S

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

Patent

CA 2583175

A receiver for continuous carrier phase tracking of low carrier-to-noise ratio ("CNR") signals from a plurality of radio navigation satellites while the receiver is mobile. The receiver may have: a radio frequency (RF) front-end that provides satellite data corresponding to signals received from the plurality of radio navigation satellites; an inertial measurement unit (IMU) that provides inertial data; and a processor circuit in circuit communication with the RF front end and the IMU, the processor circuit being capable of using satellite data from the RF front-end and inertial data from the IMU to perform continuous carrier phase tracking of low CNR radio navigation satellite signals having a CNR of about 20 dB-Hz, while the receiver is mobile. The receiver may be a GPS receiver for continuous carrier phase tracking of low-CNR GPS signals.

L'invention concerne un suivi continu du faible rapport porteuse sur bruit ("CNR") provenant d'une pluralité de satellites de navigation, le récepteur étant mobile. Le récepteur peut posséder une extrémité frontale fréquence radio (RF) qui communique les données satellite correspondant aux signaux reçus depuis une pluralité de satellites de navigation radio; un système de mesure inertiel (IMU) qui fournit des données inertielles; et un circuit processeur en communication de circuit avec l'extrémité frontale fréquence radio et l'IMU, le circuit processeur étant capable d'utiliser les données de satellite provenant de l'extrémité frontale de RF et les données inertielles provenant de l'IMU pour effectuer le suivi continu de phase de porteuse des signaux de navigation satellite à faible CNR, à savoir un CNR d'environ 20 dB-Hz, le récepteur étant mobile. Le récepteur peut être un récepteur GPS destiné au suivi de phase de porteuse en continu des signaux de navigation satellite GPS à faible CNR.

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