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Error analysis of correlating Shack-Hartmann wave-front sensor for a point source
Chen Lin-Hui1,2,3; Rao Chang-Hui1,2
Source PublicationACTA PHYSICA SINICA
Volume60Issue:9
2011-09-01
Language英语
Indexed BySCI
WOS IDWOS:000295114000025
SubtypeArticle
AbstractIn Shack-Hartmann wavefront sensor(SH-WFS) based adaptive optics system, the centroiding algorithm is usually used to estimate the centroid of a point source spot. But the detecting accuracy of the centroiding algorithm is affected by many factors such as threshold selection, so that the centroid position of the spot cannot be evaluated accurataly under the condition of low signal-to-noise ratio (SNR). Comparatively the correlating algorithm for Shack-Hartmann wave front-sensing is more robust because it need not reduce the thresholding. In this paper, based on the the principle of the correlating SH-WFS, the measurement error of the correlating SH-WFS is derived by building up the noise model of the correlating SH-WFS. The influences of spot size, photon noise, read out noise and background light noise on the measurement of the correlating SH-WFS are analyzed systematically. The numerically simulation results and the experimental results are consistent well with the theoretical analyses.
KeywordCorrelating Shack-hartmann Wavefront Sensor Correlation Algorithm Centroiding Algorithm Measuring Error
WOS KeywordCENTROID COMPUTATION ; ADAPTIVE OPTICS ; MIRROR ; LIGHT
WOS Research AreaPhysics
WOS SubjectPhysics, Multidisciplinary
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Document Type期刊论文
Identifierhttp://ir.ioe.ac.cn/handle/181551/3410
Collection光电技术研究所被WoS收录文章
Affiliation1.Chinese Acad Sci, Key Lab Adapt Opt, Chengdu 610209, Peoples R China
2.Chinese Acad Sci, Inst Opt & Elect, Chengdu 610209, Peoples R China
3.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Chen Lin-Hui,Rao Chang-Hui. Error analysis of correlating Shack-Hartmann wave-front sensor for a point source[J]. ACTA PHYSICA SINICA,2011,60(9).
APA Chen Lin-Hui,&Rao Chang-Hui.(2011).Error analysis of correlating Shack-Hartmann wave-front sensor for a point source.ACTA PHYSICA SINICA,60(9).
MLA Chen Lin-Hui,et al."Error analysis of correlating Shack-Hartmann wave-front sensor for a point source".ACTA PHYSICA SINICA 60.9(2011).
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