Low-orbit satellite communications system for terminals

Details Low-orbit satellite communications system for terminals Low-orbit satellite communications system for terminals

1996-06-11

1997-09-16

Issing, Gregory C.

Communications: directive radio wave systems and devices (e.g.,

Directive

Including a satellite

342352, 455 121, 455 133, 370294, H04B 7185, H04B 156

Patent

active

056685564

ABSTRACT:
The present invention relates to a communications system between low-orbit satellites and terminals, in which the beams (12) of each service area (14) are illuminated according to a beam-hopping spatial scanning. For each satellite and for each terminal transmission and reception are separated in time and synchronized. Time-division duplex is used. Applicable especially to the field of space telecommunications.

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National Telecommunications Conference, vol. 1/4, Nov. 30, 1980, Houston, US; P.R. Hirschler-Marchand et al: "system design and technology development for an EHF beam-hopped satellite downlink".
IEEE Conference on Satellites Systems Per Mobile Communications and Surveillance, vol. 95, 1973, pp. 35-38 J.G. Walker: "Continuous Whole Earth Coverage by Circular Orbit Satellites".
Dragone et al, "New Techniques for the Design of Communication Satellite and Earth Station Antennas", Jun. 1980, Int'l Conf. on Comm. pp. 25.5.1-25.5.7.
Reudink et al, Conf. Proceedings of the 8th European Microwave Conf. Paris, France, 4-8 Sep. 1978.

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