Hybrid space system based on a constellation of low-orbit satellites working as space repeaters for improving the transmission and reception of geostationary signals

摘要

The remote communications system, intended for low-throughput data transfer between at least two users located substantially on the surface of a celestial body, includes:
a plurality of transmitting/receiving surface terminals, each associated to a user,one or more geostationary element installed on board satellites placed in geostationary orbit around the celestial body, these geostationary elements being able to transmit data from and to a predefined coverage area on the surface of the celestial body with a line of sight to the geostationary satellite,and one or more signal repetition element for the signals transmitted and/or received from the geostationary elements to the surface terminals these traveling repetition elements being on board satellites moving in a traveling orbit; the same frequency band is used for communications between the surface terminals and the traveling elements and for communications between the traveling elements and the geostationary elements.

主权项

1. Telecommunications system, intended for low-throughput data transfer between at least two users located substantially on the surface of a celestial body, comprising:
at least two transmitting/receiving surface terminals, each associated with a different user, one or more stationary means GEO above the surface of the celestial body, these stationary means being able to transmit data from and to a predefined coverage area with a line of sight to the stationary means, and one or more signal repeater to repeat signals transmitted and/or received from the stationary means GEO and the surface terminals, said repeater traveling above the surface of the celestial body and comprising means of performing an amplification without frequency translation of the signal received from the stationary means GEO; a same frequency band being used for communications between the surface terminals and the repeater and for communications between the repeater and the stationary means; and wherein at least one user terminal utilizes a CDMA type interface to manage arrival of two signals bearing Doppler and delay differences.