Active compensation for horizontal-line-of-sight turbulence over near-ground paths

Bruce Martin Levine; Allan Wirth; Herbert DaSilva; Franklin M. Landers; Stacy Clinton; Theresa L. Bruno; Pierre R. Barbier; David W. Rush; Penelope Polak-Dingels; Geoffrey L. Burdge; Douglas P. Looze

doi:10.1117/12.330220

3 November 1998 Active compensation for horizontal-line-of-sight turbulence over near-ground paths

Bruce Martin Levine, Allan Wirth, Herbert DaSilva, Franklin M. Landers, Stacy Clinton, Theresa L. Bruno, Pierre R. Barbier, David W. Rush, Penelope Polak-Dingels, Geoffrey L. Burdge, Douglas P. Looze

Author Affiliations +

Proceedings Volume 3433, Propagation and Imaging through the Atmosphere II; (1998) https://doi.org/10.1117/12.330220
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1998, San Diego, CA, United States

Abstract

Atmospheric turbulence over long horizontal paths perturbs phase in the pupil of an optical communications receiver, and also can cause severe intensity scintillations. We describe a real time wavefront compensation system using PC technology to perform all wavefront control tasks. This system uses a modal correction scheme, and we report the first measurements of residual wavefront taken approximately 1 meter above ground level at 1 km range. The effects of turbulence, scintillations and control bandwidth on the correction are all examined.

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Bruce Martin Levine, Allan Wirth, Herbert DaSilva, Franklin M. Landers, Stacy Clinton, Theresa L. Bruno, Pierre R. Barbier, David W. Rush, Penelope Polak-Dingels, Geoffrey L. Burdge, and Douglas P. Looze "Active compensation for horizontal-line-of-sight turbulence over near-ground paths", Proc. SPIE 3433, Propagation and Imaging through the Atmosphere II, (3 November 1998); https://doi.org/10.1117/12.330220

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