Statistics – Applications
Scientific paper
Sep 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002spie.4825...14w&link_type=abstract
High-Resolution Wavefront Control: Methods, Devices, and Applications IV. Edited by Gonglewski, John D.; Vorontsov, Mikhail A.;
Statistics
Applications
Scientific paper
We present experimental results for the adaptive compensation of atmospheric turbulence effects on a free-space laser communication links at near horizontal propagation paths over 2.5 km and 5 km lengths. A high-resolution micro-machined piston type mirror array (12x12 elements) and a fast beam steering mirror were used in an adaptive optics laser communication system based on the model-free stochastic parallel gradient descent (SPGD) optimization wavefront control technique. Control of the mirror was performed by a VLSI SPGD micro-controller. The experimental results demonstrate the improvement of the receiver performance (fiber coupling efficiency) on a summer day with a refractive index structure constant in the order of C_n^2=10^(-14) m^(-2/3)
Gowens John W. II
Vorontsov Mikhail A.
Weyrauch Thomas
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