System and method for sharing uplink bandwidth among...

H - Electricity – 04 – B

Patent

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Details

H04B 7/185 (2006.01)

Patent

CA 2504736

A system for transmitting data to a plurality of satellites is provided. A first satellite (320) in an orbital slot has an associated receive antenna, and is configured to receive signals in a first range of frequencies. A second satellite (316) in the orbital slot has an associated receive antenna. The second satellite (316) is separated from the first satellite (320) by at least a first separation angle, and is configured to receive signals in the first range of frequencies. A first earth uplink antenna (308b), located at a first earth location, is capable of transmitting a first uplink beam ((328a) at the receive antenna of the first satellite (320). A second earth uplink antenna (308b), collocated at the first earth location, is capable of transmitting a second uplink beam (324a) at the receive antenna of the second satellite (316). The first uplink beam (328a) includes first signals at the first range of frequencies, and the second uplink beam (324a) includes second signals at the first range of frequencies. Further, the first uplink beam (328a) is substantially attenuated beyond the first separation angle in the direction of the second satellite (316), and the second uplink beam (324a) is substantially attenuated beyond the first separation angle in the direction of the first satellite (320).

L'invention concerne un système de transmission de données à une pluralité de satellites. Un premier satellite (320) dans un créneau orbital présente une antenne de réception associée, et est configuré pour recevoir des signaux dans une première gamme de fréquences. Un second satellite (316) dans le créneau orbital présente une antenne de réception associée. Le second satellite (316) est séparé du premier satellite (320) par au moins un premier angle de séparation, et est configuré pour la réception de signaux dans la première gamme de fréquences. Une première antenne au sol, à liaison montante (308b), disposée en un premier emplacement au sol, est capable de transmettre un premier faisceau à liaison montante (328a) à l'antenne de réception du premier satellite (320). Une seconde antenne au sol, à liaison montante (308b), située au même endroit que le premier emplacement au sol, est capable de transmettre un second faisceau à liaison montante (324a) à l'antenne de réception du second satellite (316). Le premier faisceau à liaison montante (328a) comprend des premiers signaux à la première gamme de fréquences, et le second faisceau à liaison montante (324a) comprend des seconds signaux à la première gamme de fréquences. En outre, le premier faisceau à liaison montante (328a) est sensiblement atténué au-delà du premier angle de séparation en direction du second satellite (316), et le second faisceau à liaison montante (324a) est sensiblement atténué au-delà du premier angle de séparation en direction du premier satellite (320).

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