Signal processing of the Shack-Hartmann wavefront sensor operated with extended targets

Xinqi Hu; Dazun Zhao; Xin Yu; Haifeng Shi

doi:10.1117/12.580925

23 December 2004 Signal processing of the Shack-Hartmann wavefront sensor operated with extended targets

Xinqi Hu, Dazun Zhao, Xin Yu, Haifeng Shi

Proceedings Volume 5639, Adaptive Optics and Applications III; (2004) https://doi.org/10.1117/12.580925
Event: Photonics Asia, 2004, Beijing, China

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.

Citation Download Citation

Xinqi Hu, Dazun Zhao, Xin Yu, and 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); https://doi.org/10.1117/12.580925

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