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题名:
Speckle image reconstruction of the adaptive optics solar images
作者: Zhong, Libo1,2,3; Tian, Yu1,2; Rao, Changhui1,2
刊名: Optics Express
出版日期: 2014
卷号: 22, 期号:23, 页码:29249-29259
学科分类: Angular distribution - Image reconstruction - Plastic deformation - Speckle
DOI: 10.1364/OE.22.029249
文章类型: 期刊论文
中文摘要: Speckle image reconstruction, in which the speckle transfer function (STF) is modeled as annular distribution according to the angular dependence of adaptive optics (AO) compensation and the individual STF in each annulus is obtained by the corresponding Fried parameter calculated from the traditional spectral ratio method, is used to restore the solar images corrected by AO system in this paper. The reconstructions of the solar images acquired by a 37-element AO system validate this method and the image quality is improved evidently. Moreover, we found the photometric accuracy of the reconstruction is field dependent due to the influence of AO correction. With the increase of angular separation of the object from the AO lockpoint, the relative improvement becomes approximately more and more effective and tends to identical in the regions far away the central field of view. The simulation results show this phenomenon is mainly due to the disparity of the calculated STF from the real AO STF with the angular dependence.
英文摘要: Speckle image reconstruction, in which the speckle transfer function (STF) is modeled as annular distribution according to the angular dependence of adaptive optics (AO) compensation and the individual STF in each annulus is obtained by the corresponding Fried parameter calculated from the traditional spectral ratio method, is used to restore the solar images corrected by AO system in this paper. The reconstructions of the solar images acquired by a 37-element AO system validate this method and the image quality is improved evidently. Moreover, we found the photometric accuracy of the reconstruction is field dependent due to the influence of AO correction. With the increase of angular separation of the object from the AO lockpoint, the relative improvement becomes approximately more and more effective and tends to identical in the regions far away the central field of view. The simulation results show this phenomenon is mainly due to the disparity of the calculated STF from the real AO STF with the angular dependence.
收录类别: SCI ; Ei
项目资助者: Natural Science Foundation of China [11178004]
语种: 英语
WOS记录号: WOS:000345268500144
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ioe.ac.cn/handle/181551/6383
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, China
2. Laboratory on Adaptive Optics, Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu, China
3. University of Chinese Academy of Sciences, Beijing, China

Recommended Citation:
Zhong, Libo,Tian, Yu,Rao, Changhui. Speckle image reconstruction of the adaptive optics solar images[J]. Optics Express,2014,22(23):29249-29259.
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