Solar image reconstruction method under atmospheric turbulence at Fuxian Lake Solar Observatory

doi:10.61977/ati2024010

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	Solar image reconstruction method under atmospheric turbulence at Fuxian Lake Solar Observatory
	Zou SZ(邹思仲)1,2 ; Jin ZY(金振宇)1,3 ; Ji KF(季凯帆)1,3 ; Xu J(许骏)1,3 ; Yang L(杨磊)1,3
发表期刊	Astronomical Techniques and Instruments/天文技术与仪器(英文)
	2024-03
卷号	1 期号:02 页码:128-139
DOI	10.61977/ati2024010
分类号	P182.2
产权排序	第1完成单位
收录类别	CSCD
关键词	Astronomical seeing Solar telescopes Solar observatories Astronomy image processing Phase error [100138679]DECONVOLUTION
摘要	Strong atmospheric turbulence reduces astronomical seeing, causing speckle images acquired by groundbased solar telescopes to become blurred and distorted. Severe distortion in speckle images impedes image phase deviation in the speckle masking reconstruction method, leading to the appearance of spurious imaging artifacts.Relying only on linear image degradation principles to reconstruct solar images is insufficient. To solve this problem,we propose the multiframe blind deconvolution combined with non-rigid alignment(MFBD-CNRA) method for solar image reconstruction. We consider image distortion caused by atmospheric turbulence and use non-rigid alignment to correct pixel-level distortion, thereby achieving nonlinear constraints to complement image intensity changes. After creating the corrected speckle image, we use the linear method to solve the wavefront phase, obtaining the target image. We verify the effectiveness of our method results, compared with others, using solar observation data from the1 m new vacuum solar telescope(NVST). This new method successfully reconstructs high-resolution images of solar observations with a Fried parameter r0 of approximately 10 cm, and enhances images at high frequency. When r0 is approximately 5 cm, the new method is even more effective. It reconstructs the edges of solar graining and sunspots,and is greatly enhanced at mid and high frequency compared with other methods. Comparisons confirm the effectiveness of this method, with respect to both nonlinear and linear constraints in solar image reconstruction. This provides a suitable solution for image reconstruction in ground-based solar observations under strong atmospheric turbulence.
资助项目	National Natural Science Foundation of China (NSFC) [11773073]; National Natural Science Foundation of China (NSFC) [11873027]; National Natural Science Foundation of China (NSFC) [U2031140]; National Natural Science Foundation of China (NSFC) [11833010]; Yunnan Key Laboratory of Solar Physics and Space Science [202205AG070009]; Yunnan Provincial Science and Technology Department [202103AD50013]; Yunnan Provincial Science and Technology Department [202105AB160001]; Yunnan Provincial Science and Technology Department [202305AH340002]; the GHfund A202302013242 and CAS “Light of West China” Program 202305AS350029
项目资助者	National Natural Science Foundation of China (NSFC) [11773073, 11873027, U2031140, 11833010] ; Yunnan Key Laboratory of Solar Physics and Space Science [202205AG070009] ; Yunnan Provincial Science and Technology Department [202103AD50013, 202105AB160001, 202305AH340002] ; the GHfund A202302013242 and CAS “Light of West China” Program 202305AS350029
语种	英语
学科领域	天文学 ; 太阳与太阳系
ISSN	1672-7975
URL	查看原文
引用统计
文献类型	期刊论文
版本	出版稿
条目标识符	http://ir.ynao.ac.cn/handle/114a53/27850
专题	天文技术实验室抚仙湖太阳观测和研究基地
作者单位	1.Yunnan Observatories, Chinese Academy of Sciences; 2.University of Chinese Academy of Sciences; 3.Yunnan Key Laboratory of Solar Physics and Space Science
第一作者单位	中国科学院云南天文台
推荐引用方式 GB/T 7714	Zou SZ,Jin ZY,Ji KF,et al. Solar image reconstruction method under atmospheric turbulence at Fuxian Lake Solar Observatory[J]. Astronomical Techniques and Instruments/天文技术与仪器(英文),2024,1(02):128-139.
APA	邹思仲,金振宇,季凯帆,许骏,&杨磊.(2024).Solar image reconstruction method under atmospheric turbulence at Fuxian Lake Solar Observatory.Astronomical Techniques and Instruments/天文技术与仪器(英文),1(02),128-139.
MLA	邹思仲,et al."Solar image reconstruction method under atmospheric turbulence at Fuxian Lake Solar Observatory".Astronomical Techniques and Instruments/天文技术与仪器(英文) 1.02(2024):128-139.

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