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Proceedings Paper

High-resolution imaging through strong turbulence
Author(s): Douglas A. Hope; Stuart M. Jefferies; Cindy Giebienk
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Paper Abstract

Random fluctuations in the index of refraction, caused by differential heating and cooling of the atmosphere, can severely limit the quality of ground-based observations of space objects. Techniques such as adaptive optics can help compensate for the deleterious effects that turbulence has on the images by deforming the telescope mirror and thus correcting the wave-front. However, when imaging through strong turbulence such techniques may not adequately correct the wave-front. In such cases blind restoration techniques - which estimate both the atmospheric turbulence characterized by the atmospheric point-spread-function and the object that is being observed - must be used. We demonstrate high quality blind restorations of object scenes, obtained when observing through strong turbulence, by using a sequence of images obtained simultaneously at different wavelengths and prior information on the distribution of the sources of regions of low spectral power in the data.

Paper Details

Date Published: 21 September 2007
PDF: 8 pages
Proc. SPIE 6697, Advanced Signal Processing Algorithms, Architectures, and Implementations XVII, 66970C (21 September 2007); doi: 10.1117/12.734956
Show Author Affiliations
Douglas A. Hope, Univ. of Hawaii (United States)
Stuart M. Jefferies, Univ. of Arizona (United States)
Univ. of New Mexico (United States)
Cindy Giebienk, Univ. of Hawaii (United States)


Published in SPIE Proceedings Vol. 6697:
Advanced Signal Processing Algorithms, Architectures, and Implementations XVII
Franklin T. Luk, Editor(s)

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