The importance of pointing-acquisition and tracking for optical communication payloads

Details The importance of pointing-acquisition and tracking for optical communication payloads The importance of pointing-acquisition and tracking for optical communication payloads

Oct 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989spie.1131...30w&link_type=abstract

IN: Optical space communication; Proceedings of the Meeting, Paris, France, Apr. 24-26, 1989 (A90-38001 16-17). Bellingham, WA,

Computer Science

Performance

Data Acquisition, Data Links, Optical Communication, Optical Tracking, Pointing Control Systems, Satellite Communication, Bit Error Rate, Data Transmission, Field Of View, Laser Beams, Synchronous Satellites

Scientific paper

The very narrow beams characterizing spacecraft optical communications systems must be found in a wide field of uncertainty and must be precisely tracked during periods of data transmission. The performance capabilities of the requisite pointing, acquisition, and tracking (PAT) system are presently discussed with a view to inherent physical limitations. Having established the line-of-sight between both optical terminals with an accuracy of the order of + or - 3 microrads, the PAT must maintain this alignment over the entire period of visibility with an accuracy greater than 0.5 microrad.

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