B - Operations – Transporting – 64 – G
Patent
B - Operations, Transporting
64
G
B64G 1/42 (2006.01) B64G 1/10 (2006.01) B64G 1/24 (2006.01) H04B 7/185 (2006.01) H04B 7/19 (2006.01) H04B 7/195 (2006.01)
Patent
CA 2216399
An elliptical satellite system which carries out communication. The satellite (100) orbits a height above the earth less than that necessary for geosynchronous orbits. When the satellite (100) is near the apogee portion of its orbit, its velocity approximates the rotational velocity of the earth, and during that period it appears to hover over the earth. Each ground station (104) on the earth always communicates a satellite (100) within a predetermined position of its apogee, and hence that satellite (100) appears to the ground station (104) to hover over the earth. The satellite (100) hence does not communicate with any earth station when it is outside of that apogee portion. During the times when the satellite (100) is outside the apogee portion, its communication is therefore shut off to prevent any possibility of interfering with geosynchronous satellites. During this time, the power supply (290) on the satellite is also used to charge a battery on the satellite (100). This enables the power supply (290) to be made smaller by an amount equivalent to the duty cycle of the satellite (100) during the time which it is on.
L'invention concerne un système de satellite à orbite elliptique utilisé pour la transmission de communication. L'orbite du satellite (100) est moins élevée qu'une orbite géosynchrone. Lorsque le satellite (100) s'approche de l'apogée de son orbite, sa vitesse avoisine la vitesse rotationnelle de la terre et donne l'impression de planer au-dessus de la terre. Chaque station terrienne (104) communique toujours avec un satellite (100) lorsque celui-ci se trouve à une position prédéterminée de son apogée, ce qui donne l'impression à la station terrienne (104) que le satellite (100) plane au-dessus de la terre. Le satellite (100) ne peut donc communiquer avec aucune station terrienne lorsqu'il se trouve en dehors de cette portion d'apogée. Lorsque le satellite (100) se trouve en dehors de cette portion d'apogée, les communications sont donc coupées pour éviter toute interférence avec les satellites géosynchrones. Pendant ce temps, le satellite (100) recharge ses batteries à l'aide de son système d'alimentation en électricité (290). Ce système d'alimentation (290) est d'autant plus petit que le temps d'utilisation du satellite (100) est court.
Castiel David
Draim John
Manning Kenneth F.
Mbm & Co.
Virtual Geosatellite Holdings Inc.
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