Lossless Compression Method for the Magnetic and Helioseismic Imager (MHI) Payload

doi:10.1088/1674-4527/ad2cd4

	Lossless Compression Method for the Magnetic and Helioseismic Imager (MHI) Payload
	Tong, Li-Yue 2,3,4; Lin, Jia-Ben 3,4; Deng, Yuan-Yong 2,3,4; Ji KF(季凯帆)1,2; Hou, Jun-Feng 2,3,4; Wang, Quan 3,4; Yang, Xiao 3,4
刊名	RESEARCH IN ASTRONOMY AND ASTROPHYSICS
	2024-04-01
卷号	24 期号:4
关键词	methods: data analysis techniques: image processing Sun: magnetic fields Sun: photosphere
ISSN号	1674-4527
DOI	10.1088/1674-4527/ad2cd4
产权排序	第4完成单位
文献子类	Article
英文摘要	The Solar Polar-orbit Observatory (SPO), proposed by Chinese scientists, is designed to observe the solar polar regions in an unprecedented way with a spacecraft traveling in a large solar inclination angle and a small ellipticity. However, one of the most significant challenges lies in ultra-long-distance data transmission, particularly for the Magnetic and Helioseismic Imager (MHI), which is the most important payload and generates the largest volume of data in SPO. In this paper, we propose a tailored lossless data compression method based on the measurement mode and characteristics of MHI data. The background out of the solar disk is removed to decrease the pixel number of an image under compression. Multiple predictive coding methods are combined to eliminate the redundancy utilizing the correlation (space, spectrum, and polarization) in data set, improving the compression ratio. Experimental results demonstrate that our method achieves an average compression ratio of 3.67. The compression time is also less than the general observation period. The method exhibits strong feasibility and can be easily adapted to MHI.
学科主题	天文学 ; 天文学:太阳与太阳系
URL标识	查看原文
出版地	20A DATUN RD, CHAOYANG, BEIJING, 100101, PEOPLES R CHINA
资助项目	National Key R&D Program of China[2022YFF0503800]; National Natural Science Foundation of China (NSFC)[11427901]; Strategic Priority Research Program of the Chinese Academy of Sciences (CAS-SPP)[No.XDA15320102]; Youth Innovation Promotion Association (CAS)[2022057]
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
WOS记录号	WOS:001199870500001
资助机构	National Key R&D Program of China[2022YFF0503800] ; National Natural Science Foundation of China (NSFC)[11427901] ; Strategic Priority Research Program of the Chinese Academy of Sciences (CAS-SPP)[No.XDA15320102] ; Youth Innovation Promotion Association (CAS)[2022057]
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.ynao.ac.cn/handle/114a53/27049]
专题	天文技术实验室
作者单位	1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, China 2.School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing 100049, China; 3.Key Laboratory of Solar Activity and Space Weather, National Space Science Center, Chinese Academy of Sciences, Beijing 100190, China; 4.National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, China; jiabenlin@bao.ac.cn;
推荐引用方式 GB/T 7714	Tong, Li-Yue,Lin, Jia-Ben,Deng, Yuan-Yong,et al. Lossless Compression Method for the Magnetic and Helioseismic Imager (MHI) Payload[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2024,24(4).
APA	Tong, Li-Yue.,Lin, Jia-Ben.,Deng, Yuan-Yong.,季凯帆.,Hou, Jun-Feng.,...&Yang, Xiao.(2024).Lossless Compression Method for the Magnetic and Helioseismic Imager (MHI) Payload.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,24(4).
MLA	Tong, Li-Yue,et al."Lossless Compression Method for the Magnetic and Helioseismic Imager (MHI) Payload".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 24.4(2024).