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Proceedings Paper

Effect of aperture averaging on a 570-Mbps 42 km horizontal path optical link
Author(s): Keith E. Wilson; Abhijit Biswas; Scott H. Bloom; Victor J. Chan
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Paper Abstract

Optical communications offer high data rate satellite to ground communications in a small, low mass, and low power consumption package. However, turbulence-induced scintillation degrades the link performance as the zenith angle increases. To investigate the effect of atmospheric turbulence on the optical link at high zenith angles, we performed a 570 Mbps optical communications link across a 42 km horizontal path, and have measured the effects of aperture averaging on the irradiance variance. The variance clearly showed a dependence on the aperture size, decreasing with increasing aperture size. These results were used to calculate the log-amplitude variance and the atmospheric structure constant, Cn2, across the link. The bit error rates across the link were also measured. The results show that the link performance was dominated by burst errors with error rates that ranged from 10-6 to 10-2, increasing with decreasing aperture size.

Paper Details

Date Published: 15 June 1995
PDF: 10 pages
Proc. SPIE 2471, Atmospheric Propagation and Remote Sensing IV, (15 June 1995); doi: 10.1117/12.211934
Show Author Affiliations
Keith E. Wilson, Jet Propulsion Lab. (United States)
Abhijit Biswas, Jet Propulsion Lab. (United States)
Scott H. Bloom, ThermoTrex Corp. (United States)
Victor J. Chan, ThermoTrex Corp. (United States)

Published in SPIE Proceedings Vol. 2471:
Atmospheric Propagation and Remote Sensing IV
J. Christopher Dainty, Editor(s)

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