G - Physics – 01 – S
Patent
G - Physics
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S
G01S 1/30 (2006.01) G01S 13/82 (2006.01) G08G 1/127 (2006.01) G08G 9/00 (2006.01) G01S 5/00 (2006.01) G01S 5/02 (2006.01) G01S 13/87 (2006.01)
Patent
CA 2217391
A combined method for locating mobile stations using a measurement of the phase of carrier-modulating tones on the outbound link and a pseudo-random code spread spectrum for timestamping message reception on the inbound link. The method is useful for locating a variety of mobile stations on land, at sea, in the air, etc.
Le procédé de l'invention est mixte et utilise, dans la liaison aller, la mesure de la phase de tons modulant une porteuse et, dans la liaison retour, un étalement de spectre par code pseudo-aléatoire ce qui permet de dater la réception du message. Application à la localisation de mobiles divers (terrestres, maritimes, aériens, ...).
Centre National D'etudes Spatiales
Goudreau Gage Dubuc
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