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题名:
Speckle transfer function for partial correction adaptive optics image reconstruction
作者: Zhong, Libo1,2,3; Tian, Yu1,2; Rao, Changhui1,2
刊名: Optics Letters
出版日期: 2014
卷号: 39, 期号:15, 页码:4599-4602
学科分类: Image reconstruction - Transfer functions
DOI: 10.1364/OL.39.004599
通讯作者: Rao, C. (chrao@ioe.ac.cn)
文章类型: 期刊论文
中文摘要: The residual aberrations of adaptive optics (AO) images can be removed by the speckle reconstruction method. To achieve accurate photometry, the knowledge of the speckle transfer function (STF) is necessary. In this Letter, a new method is proposed to evaluate the STF for speckle image reconstruction based on the partial correction AO. The STF is divided into two sections: the low-frequency section and the high-frequency section, and two different generalized Fried parameters for the partial wavefront compensation are used to calculate the STF values of those two different sections. This method is tested with the different seeing conditions and the various correction modes. The results show that the combined STFs have satisfactory agreement with the simulated AO STFs and give more accurate results than the STFs obtained from the traditional spectral ratio method. Further discussions show that the method is more reliable when the AO is operated in low-order correction mode because the approximation of the STF and the two generalized Fried parameters have better accuracy when the pupil diameter is much larger than those generalized Fried parameters. © 2014 Optical Society of America.
英文摘要: The residual aberrations of adaptive optics (AO) images can be removed by the speckle reconstruction method. To achieve accurate photometry, the knowledge of the speckle transfer function (STF) is necessary. In this Letter, a new method is proposed to evaluate the STF for speckle image reconstruction based on the partial correction AO. The STF is divided into two sections: the low-frequency section and the high-frequency section, and two different generalized Fried parameters for the partial wavefront compensation are used to calculate the STF values of those two different sections. This method is tested with the different seeing conditions and the various correction modes. The results show that the combined STFs have satisfactory agreement with the simulated AO STFs and give more accurate results than the STFs obtained from the traditional spectral ratio method. Further discussions show that the method is more reliable when the AO is operated in low-order correction mode because the approximation of the STF and the two generalized Fried parameters have better accuracy when the pupil diameter is much larger than those generalized Fried parameters. © 2014 Optical Society of America.
收录类别: SCI ; Ei
项目资助者: National Natural Science Foundation of China [11178004]
语种: 英语
WOS记录号: WOS:000339878900081
ISSN号: 01469592
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ioe.ac.cn/handle/181551/6387
Appears in Collections:自适应光学技术研究室(八室)_期刊论文

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作者单位: 1. Key Laboratory on Adaptive Optics, Chinese Academy of Sciences, Chengdu 610209, China
2. Laboratory on Adaptive Optics, Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 610209, China
3. University of Chinese Academy of Sciences, Beijing 100039, China

Recommended Citation:
Zhong, Libo,Tian, Yu,Rao, Changhui. Speckle transfer function for partial correction adaptive optics image reconstruction[J]. Optics Letters,2014,39(15):4599-4602.
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