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

文献类型：期刊论文

作者Zou SZ(邹思仲)1,3; Jin ZY(金振宇)1,2; Ji KF(季凯帆)1,2; Xu J(许骏)1,2; Yang L(杨磊)1,2
刊名Astronomical Techniques and Instruments/天文技术与仪器(英文)
出版日期2024-03
卷号1期号:02页码:128-139
关键词Astronomical seeing Solar telescopes Solar observatories Astronomy image processing Phase error [100138679]DECONVOLUTION
ISSN号1672-7975
DOI10.61977/ati2024010
产权排序第1完成单位
英文摘要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. 
学科主题天文学 ; 太阳与太阳系
分类号P182.2
URL标识查看原文
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
语种英语
资助机构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
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/27850]  
专题天文技术实验室
云南天文台_抚仙湖太阳观测站
作者单位1.Yunnan Observatories, Chinese Academy of Sciences;
2.Yunnan Key Laboratory of Solar Physics and Space Science
3.University of Chinese Academy of Sciences;
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.

入库方式： OAI收割

来源：云南天文台

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