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Error analysis of the piston estimation method in dispersed fringe sensor
Li, Yang1,2,3; Wang, Sheng-Qian1,2; Rao, Chang-Hui1,2
2017
发表期刊Chinese Physics B
ISSN1674-1056
卷号26期号:3页码:039501
摘要Dispersed fringe sensor (DFS) is an important phasing sensor of next-generation optical astronomical telescopes. The measurement errors induced by the measurement noise of three piston estimation methods for the DFS including leastsquared fitting (LSF) method, frequency peak location (FPL) method and main peak position (MPP) method, are analyzed theoretically and validated experimentally in this paper. The experimental results coincide well with the theoretical analyses.The MPP, FPL, LSF are used respectively when the DFS operates with broadband light (central wavelength: 706 nm, bandwidth: 23 nm). The corresponding root mean square (RMS) value of estimated piston error can be achieved to be 1 nm, 3 nm, 26 nm, respectively. Additionally, the range of DFS with the FPL can be more than 100 μm at the same time. The FPL method can work well both in coarse and fine phasing stages with acceptable accuracy, compared with LSF method and MPP method. © 2017 Chinese Physical Society and IOP Publishing Ltd.
关键词Adaptive optics - Errors - Interferometers - Phase measurement - Pistons - Telescopes
收录类别SCI ; Ei
语种英语
文献类型期刊论文
条目标识符http://ir.ioe.ac.cn/handle/181551/8796
专题自适应光学技术研究室(八室)
作者单位1.Laboratory on Adaptive Optics, Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu; 610209, China;
2.Key Laboratory on Adaptive Optics, Chinese Academy of Sciences, Chengdu; 610209, China;
3.University of Chinese Academy of Sciences, Beijing; 100049, China
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GB/T 7714
Li, Yang,Wang, Sheng-Qian,Rao, Chang-Hui. Error analysis of the piston estimation method in dispersed fringe sensor[J]. Chinese Physics B,2017,26(3):039501.
APA Li, Yang,Wang, Sheng-Qian,&Rao, Chang-Hui.(2017).Error analysis of the piston estimation method in dispersed fringe sensor.Chinese Physics B,26(3),039501.
MLA Li, Yang,et al."Error analysis of the piston estimation method in dispersed fringe sensor".Chinese Physics B 26.3(2017):039501.
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