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Proceedings Paper

New centroid computation method using dynamic tracking
Author(s): Bo Li; Xin Yu; Xinqi Hu
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Paper Abstract

The disadvantage in expanding dynamic range and restraining noise of the traditional H-S (Hartmann-Shack) wavefront sensor centroid computation method is analyzed. Based on the temporal characteristic of atmosphere turbulence, through determining the changing scope of centroid motion between two adjacent sample periods, a new dynamic tracking centroid method of H-S wavefront sensor is proposed. Using this method, the dynamic range of wavefront sensor can be expanded when atmosphere turbulence is strong; the effect of CCD readout noise and shot noise can be reduced.

Paper Details

Date Published: 5 September 2002
PDF: 6 pages
Proc. SPIE 4926, Adaptive Optics and Applications II, (5 September 2002); doi: 10.1117/12.481686
Show Author Affiliations
Bo Li, Beijing Astronomical Observatory (China)
Xin Yu, Beijing Institute of Technology (China)
Xinqi Hu, Beijing Institute of Technology (China)

Published in SPIE Proceedings Vol. 4926:
Adaptive Optics and Applications II
Wenhan Jiang; Robert K. Tyson, Editor(s)

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