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Proceedings Paper

Differential-tilt technique for saturation-resistant profiling of atmospheric turbulence
Author(s): Matthew R. Whiteley; Donald C. Washburn; Lawrence A. Wright
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Paper Abstract

A technique for profiling of Cn2 over an atmospheric propagation path is proposed, developed and analyzed. The technique employs differential-tilt measurements to arrive at statistics which have unique weighting functions over the propagation path. These weighting functions are computed theoretically and used to derive a reconstructor matrix for Cn2 values throughout the path to be applied to an appropriate set of differential-tilt statistics. A candidate optical system is presented, and the performance of the profile reconstructor is analyzed. This study indicates that the relative error in the Cn2 estimates is approximately 5%. The relative error in estimating key atmospheric parameters such as the Fried parameter, isoplanatic angle, and the Rytov parameter from the reconstructed profiles is approximately 3%.

Paper Details

Date Published: 4 February 2002
PDF: 12 pages
Proc. SPIE 4494, Adaptive Optics Systems and Technology II, (4 February 2002); doi: 10.1117/12.454795
Show Author Affiliations
Matthew R. Whiteley, Air Force Research Lab. (United States)
Donald C. Washburn, Air Force Research Lab. (United States)
Lawrence A. Wright, Air Force Research Lab. (United States)

Published in SPIE Proceedings Vol. 4494:
Adaptive Optics Systems and Technology II
Robert K. Tyson; Domenico Bonaccini; Michael C. Roggemann, Editor(s)

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