Laser beam communication between spacecraft

Details Laser beam communication between spacecraft Laser beam communication between spacecraft

1988-11-21

1991-01-01

Orsino, Joseph A.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

2504911, 350142, 455600, H04B 1000

Patent

active

049824457

ABSTRACT:
A laser beam communication system for spacecraft in which each communication terminal comprises, for steering the beam projected from that terminal, four mirrors, each mounted on a mechanism capable of rotating the mirror about a constant defined axis. The mirrors and their attached mechanisms are arranged in pairs with one pair on either side of a magnifying telescope. All rotating joints in each mechanism are constructed using flexure pivots. Such a pointing element can provide both the range and accuracy required for an important class of free space laser links without introducing any extra friction into the pointing system.

REFERENCES:
patent: 4696062 (1987-09-01), LaBudde
patent: 4800556 (1989-01-01), Charlier
Auer, W., "Pointing, Acquisition and Tracking for Intersatellite Optical Data Links", Proceedings of ESA Workshop on Space Laser Application and Technology, Les Diablerets, Mar. 26-30, 1984 (Published ESA SP 202, May, 1984), pp. 131-137.

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