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Astrometric Observations of a Near-Earth Object Using the Image Fusion Technique
Zhang YG(张益恭)1,2,3,4; Wang JC(王建成)1,2,3,4; Su J(苏婕)1,2,3,4; Cheng XM(程向明)1,2,3,4; Zhang, Zhenjun5
Source PublicationASTRONOMICAL JOURNAL
2021-12
Volume162Issue:6
DOI10.3847/1538-3881/ac2c6f
Contribution Rank第1完成单位
Indexed BySCI
Abstract

The precise astrometric observation of small near-Earth objects (NEOs) is an important observational research topic in the astrometric discipline, which greatly promotes multidisciplinary research, such as the origin and evolution of the solar system, the detection and early warning of small NEOs, and deep-space navigation. The characteristics of small NEOs, such as faintness and fast moving speed, restrict the accuracy and precision of their astrometric observations. In the paper, we present a method to improve the accurate and precise astrometric positions of NEOs based on image fusion technique. The noise analysis and astrometric test from the observed images of the open cluster M23 are given. Using the image fusion technique, we obtain the sets of superimposed images and original images containing reference stars and moving targets, respectively. The final fused image set includes background stars with high signal-to-noise ratios and ideal NEO images simultaneously and avoids the saturation of background stars. Using the fused images, we can reduce the influence of telescope tracking and NEO ephemeris errors on astrometric observations, and our results indicate that the accuracy and precision of NEO Eros astrometry are improved obviously after we choose suitable image fuse mode.

Funding ProjectNational Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC)[11503083] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC)[12173085]
Funding OrganizationNational Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC)[11503083, 12173085]
Language英语
Subject Area天文学 ; 天体测量学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherIOP Publishing Ltd
Publication PlaceTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-6256
URL查看原文
WOS IDWOS:000720537000001
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordDISTORTION SOLUTION ; ORIGIN
Citation statistics
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ynao.ac.cn/handle/114a53/24681
Collection天体测量技术及应用研究组
中国科学院天体结构与演化重点实验室
Corresponding AuthorZhang YG(张益恭)
Affiliation1.Yunnan Astronomical Observatories, Chinese Academy of Sciences, Kunming 650216, People's Republic of China; zhyg@ynao.ac.cn, jcwang@ynao.ac.cn;
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, People's Republic of China;
3.Center for Astronomical Mega-Science, Chinese Academy of Sciences, Beijing 100012, People's Republic of China;
4.University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China;
5.Anyang institute of technology, Anyang 455000, People's Republic of China
Recommended Citation
GB/T 7714
Zhang YG,Wang JC,Su J,et al. Astrometric Observations of a Near-Earth Object Using the Image Fusion Technique[J]. ASTRONOMICAL JOURNAL,2021,162(6).
APA Zhang YG,Wang JC,Su J,Cheng XM,&Zhang, Zhenjun.(2021).Astrometric Observations of a Near-Earth Object Using the Image Fusion Technique.ASTRONOMICAL JOURNAL,162(6).
MLA Zhang YG,et al."Astrometric Observations of a Near-Earth Object Using the Image Fusion Technique".ASTRONOMICAL JOURNAL 162.6(2021).
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