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Proceedings Paper

Signal processing of the Shack-Hartmann wavefront sensor operated with extended targets
Author(s): Xinqi Hu; Dazun Zhao; Xin Yu; Haifeng Shi
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Paper Abstract

When an adaptive optical system is used in an imaging system observing extended targets, a method of correlation can be used to find the relative movements of the sub-images in its Hartman-Shack waterfront sensor. To get a sub-pixel accuracy, a curve fitting method is presented. This paper describes the method in detail, and presents the simulations and experimental results. These results show an accuracy of 0.1 pixels rms.

Paper Details

Date Published: 23 December 2004
PDF: 5 pages
Proc. SPIE 5639, Adaptive Optics and Applications III, (23 December 2004); doi: 10.1117/12.580925
Show Author Affiliations
Xinqi Hu, Beijing Institute of Technology (China)
Dazun Zhao, Beijing Institute of Technology (China)
Xin Yu, Beijing Institute of Technology (China)
Haifeng Shi, Beijing Institute of Technology (China)


Published in SPIE Proceedings Vol. 5639:
Adaptive Optics and Applications III
Wenhan Jiang; Yoshiji Suzuki, Editor(s)

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