23 December 2004 Signal processing of the Shack-Hartmann wavefront sensor operated with extended targets
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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.
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Xinqi Hu, Dazun Zhao, Xin Yu, Haifeng Shi, "Signal processing of the Shack-Hartmann wavefront sensor operated with extended targets", Proc. SPIE 5639, Adaptive Optics and Applications III, (23 December 2004); doi: 10.1117/12.580925; https://doi.org/10.1117/12.580925
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