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Proceedings Paper

Pointing, acquisition, and tracking system of the European SILEX program: a major technological step for intersatellite optical communication
Author(s): Michel Bailly; Eric Perez
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Paper Abstract

The overall architecture and the performances of the pointing, acquisition, and tracking (PAT) subsystem of the European SILEX program are examined. The mission constraints are described, and attention is given to the retained baseline built around a two-stage beam steering system, an open loop point-ahead control, and a full digital implementation. Performance prediction is based on signal processing, control algorithms, and detailed modeling of equipment and flexible structures. The way in which an accurate performance of the order of a microradian can be achieved with a correct allocation of the performance for each instrument of the system is shown. The rejection of the microvibrations coming from the platform when the terminal is operating is singled out as a key feature of the design. The PAT equipment and softwares - sensors, electromechanisms, and control units - are presented.

Paper Details

Date Published: 1 June 1991
PDF: 16 pages
Proc. SPIE 1417, Free-Space Laser Communication Technologies III, (1 June 1991); doi: 10.1117/12.43749
Show Author Affiliations
Michel Bailly, Matra Espace (France)
Eric Perez, Matra Espace (France)

Published in SPIE Proceedings Vol. 1417:
Free-Space Laser Communication Technologies III
David L. Begley; Bernard D. Seery, Editor(s)

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