Other
Scientific paper
Oct 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989spie.1131...97k&link_type=abstract
IN: Optical space communication; Proceedings of the Meeting, Paris, France, Apr. 24-26, 1989 (A90-38001 16-17). Bellingham, WA,
Other
Data Acquisition, Optical Communication, Optical Tracking, Pointing Control Systems, Space Communication, Bit Error Rate, Carbon Dioxide Lasers, Laser Beams, Line Of Sight, Spacecraft Electronic Equipment, Synchronous Satellites
Scientific paper
The pointing, acquisition, and tracking (PAT) subsystem that will be incorporated by optical space communications transceivers must furnish very precise beam steering due to the highly collimated nature of the laser beams employed. The PAT subsystem must also be able to cover an angular rate of more than a full hemisphere, if it is intended for use on a LEO satellite which communicates with another in GEO. The present PAT is composed of a coarse-pointing assembly, a fine-pointing assembly, and a point-ahead assembly; their interactive operation is managed by a control law electronics unit. A CO2 laser is assumed to be the transmitter.
Kern R. H.
Kugel U.
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