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Proceedings Paper

Active compensation for horizontal-line-of-sight turbulence over near-ground paths
Author(s): 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
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Paper 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.

Paper Details

Date Published: 3 November 1998
PDF: 12 pages
Proc. SPIE 3433, Propagation and Imaging through the Atmosphere II, (3 November 1998); doi: 10.1117/12.330220
Show Author Affiliations
Bruce Martin Levine, Adaptive Optics Associates, Inc. (United States)
Allan Wirth, Adaptive Optics Associates, Inc. (United States)
Herbert DaSilva, Adaptive Optics Associates, Inc. (United States)
Franklin M. Landers, Adaptive Optics Associates, Inc. (United States)
Stacy Clinton, Adaptive Optics Associates, Inc. (United States)
Theresa L. Bruno, Adaptive Optics Associates, Inc. (United States)
Pierre R. Barbier, Univ. of Maryland/College Park (United States)
David W. Rush, Univ. of Maryland/College Park (United States)
Penelope Polak-Dingels, Univ. of Maryland/College Park (United States)
Geoffrey L. Burdge, Univ. of Maryland/College Park (United States)
Douglas P. Looze, Univ. of Massachusetts/Amherst (United States)


Published in SPIE Proceedings Vol. 3433:
Propagation and Imaging through the Atmosphere II
Luc R. Bissonnette, Editor(s)

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