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非等晕效应对NVST高分辨重建结果的影响
Alternative Titlethe Analysis of Anisoplanatism's Influence in Different Reconstruction Sub-block Size of NVST
李茂林1,2; 向永源1; 金振宇1; 刘忠1
Source Publication天文研究与技术(Astronomical Research & Technology)
2018-01
Volume15Issue:1Pages:87-94
DOI10.14005/j.cnki.issn1672-7673.20171102.009
ClassificationP182.2
Contribution Rank第1完成单位
Indexed ByCSCD
Keyword非等晕效应 1m新真空太阳望远镜 高分辨率重建
Abstract

根据抚仙湖1 m新真空太阳望远镜高分辨率重建算法,从理论上分析了非等晕效应对斑点干涉术和斑点掩模法的影响。使用实测光球数据以不同子块大小分别进行高分辨数据重建,通过对不同子块大小情况下重建图像的功率谱、相位的比较,对非等晕效应的影响进行分析。结论表明,当重建区域大小超过等晕区大小时,非等晕效应会限制斑点干涉术和斑点掩模法的有效性,由于算法失效会导致模和相位重建的准确度降低。最后结合图像处理程序的具体情况,对算法的进一步优化提供了建议。 

Other Abstract

According to the high spatial resolution reconstruction algorithm of the 1m New Vacuum Solar Telescope(NVST) of the Fuxian-Lake Solar Observation Station, the effects of anisoplanatism on speckle interferometry and speckle masking are analyzed theoretically.The observed photosphere data are processed in different sub-sizes and different images are acquired.By comparing power spectrum of the reconstruction images and the reconstruction phase , the impact of the anisoplanatism on the reconstructed results are analyzed. The anisoplanatism limit the effectiveness of speckle interferometry and speckle masking. When the size of the reconstructed area exceeds the size of the isoplanatic region, the accuracy of the amplitude and phase reconstruction is reduced due to the failure of the algorithm. Finally, Combined with the specific circumstances of the image processing program, the suggestion of further optimization of the algorithm is provided.

Funding Project国家自然科学基金项目[11573068]
Funding Organization国家自然科学基金项目[11573068]
Language中文
Subject Area物理学 ; 光学 ; 天文学 ; 太阳与太阳系 ; 太阳与太阳系其他学科
MOST Discipline Catalogue理学 ; 理学::物理学 ; 理学::天文学
ISSN1672-7673
CSCD IDCSCD:6153486
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/11876
Collection抚仙湖太阳观测站
Affiliation1.中国科学院云南天文台, 云南, 昆明, 650011
2..中国科学院大学, 北京, 100049
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
李茂林,向永源,金振宇,等. 非等晕效应对NVST高分辨重建结果的影响[J]. 天文研究与技术(Astronomical Research & Technology),2018,15(1):87-94.
APA 李茂林,向永源,金振宇,&刘忠.(2018).非等晕效应对NVST高分辨重建结果的影响.天文研究与技术(Astronomical Research & Technology),15(1),87-94.
MLA 李茂林,et al."非等晕效应对NVST高分辨重建结果的影响".天文研究与技术(Astronomical Research & Technology) 15.1(2018):87-94.
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