Earth based spacecraft orbit and attitude control using a...

G - Physics – 05 – D

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G05D 1/10 (2006.01) B64G 1/26 (2006.01) B64G 1/28 (2006.01) B64G 5/00 (2006.01) G05D 1/08 (2006.01)

Patent

CA 2199436

A spacecraft ground loop controller (GLC), located on the Earth, interfaces with a satellite ground station receiving spacecraft telemetry from the downlink baseband equipment and automatically sending spacecraft commands through the command uplink baseband equipment to control the attitude of an orbiting spacecraft and achieve partial orbit control using commanded thruster firings and magnetic torquer polarity and magnitude. A cooperative approach of using all available thrusters, of both the primary and redundant strings, provides greater fuel savings.

L'invention est un contrôleur de boucle de mise à la terre pour véhicule spatial; ce contrôleur, qui est installé sur la Terre, sert d'interface avec une station terrienne qui reçoit des signaux de télémétrie provenant du véhicule spatial par le biais du matériel de bande de base et transmet automatiquement des commandes au véhicule spatial via le matériel de bande de base de la liaison ascendante de commande pour contrôler l'attitude d'un véhicule spatial en orbite et contrôler l'orbite partiellement au moyen de mises à feu contrôlées en utilisant des générateurs de couples magnétiques de signe et de grandeur contrôlés. Une approche coopérative utilisant tous les propulseurs disponibles, ceux de la chaîne primaire et ceux de la chaîne redondante, permet de réaliser des économies de carburant.

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