Satellite communications system

Details Satellite communications system Satellite communications system

1994-06-22

1995-12-12

Boudreau, Leo H.

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359152, 359159, 455 121, 342354, H04B 1000

Patent

active

054755204

ABSTRACT:
A satellite communications system. The inventive system (10) includes an arrangement (11) disposed on a first satellite for transmitting a plurality of unidirectional beams of electromagnetic radiation (32, 34, 36 and 38). Each beam is transmitted by an optical fiber (22, 24, 26 and 28) and has a unique modulation and a known coverage area. At least one of the beams (34) is received by a remote satellite receiver (30) which retransmits a signal with the modulation of the received beam. The retransmitted signal is received at the first satellite and the modulation thereon is extracted to identify which beam was received by the remote satellite. This information is used to change the coverage of the transmitted beams until the remote satellite detects all of the transmitted beams. At this point, data communication in the normal course may be effected.

REFERENCES:
patent: 3511998 (1970-05-01), Smokler
patent: 4867560 (1989-09-01), Kunitsuzu
patent: 5060304 (1991-10-01), Solinsky
patent: 5119225 (1992-06-01), Grant et al.
patent: 5282073 (1994-01-01), Defour et al.
Hemmati et al., "Laser Transmitter Aims at Laser Beacon" NASA Tech Briefs, Nov. 1993.

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