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Active sub-reflector research for a large radio telescope
Wang, Jin-Qing1; Zhao, Rong-Bin; Jiang, Yong-Chen; Sun, Zheng-Xiong; Yu, Lin-Feng; Fu, Li; Liu, Qin-Hui; Zheng, Wei-Min; Shen, Zhi-Qiang
2020
Source PublicationRESEARCH IN ASTRONOMY AND ASTROPHYSICS
ISSN1674-4527
Volume20Issue:1Pages:8
Corresponding AuthorWang, Jin-Qing(jqwang@shao.ac.rn)
AbstractThis paper proposes an active sub-reflector suitable for large radio telescopes, which can compensate both of the deformation of the main reflector and sub-reflector position offsets. The mathematical formula of the main reflector deformation compensated by the sub-reflector is deduced based on Cassegrain and Gregory antenna structures. The position of the sub-reflector is adjustable to compensate for defocusing errors on high and low elevations, which are mainly caused by the deformation of the sub-reflector supporting legs. In this paper, the method of obtaining the optimum position of the sub-reflector from the aperture phase by the interferometric method is introduced. The actual measurement is verified on the Tianma 65m radio telescope, which provides a new way to diagnose the position error of the sub-reflector.
Keywordradio telescope deformable sub-reflector model holography phase
DOI10.1088/1674-4527/20/1/9
WOS KeywordDEFORMABLE SUBREFLECTOR
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000509305000001
PublisherNATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
Citation statistics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/35576
Collection中国科学院紫金山天文台
Corresponding AuthorWang, Jin-Qing
Affiliation1.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China
2.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Peoples R China
3.Shanghai Key Lab Space Nav & Positioning Tech, Shanghai 430074, Peoples R China
Recommended Citation
GB/T 7714
Wang, Jin-Qing,Zhao, Rong-Bin,Jiang, Yong-Chen,et al. Active sub-reflector research for a large radio telescope[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2020,20(1):8.
APA Wang, Jin-Qing.,Zhao, Rong-Bin.,Jiang, Yong-Chen.,Sun, Zheng-Xiong.,Yu, Lin-Feng.,...&Shen, Zhi-Qiang.(2020).Active sub-reflector research for a large radio telescope.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,20(1),8.
MLA Wang, Jin-Qing,et al."Active sub-reflector research for a large radio telescope".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 20.1(2020):8.
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