Active sub-reflector research for a large radio telescope

• 作者: Jin-Qing Wang Li Fu Lin-Feng Yu Qin-Hui Liu Rong-Bin Zhao Wei-Min Zheng Yong-Chen Jiang Zheng-Xiong Sun Zhi-Qiang Shen
• 来源期刊: 天文和天体物理学研究
• 年，卷（期）: 2020,（1）
• 页码范围: 69-76
• 页数: 8页
• 语种: 英文
• DOI: 10.1088/1674-4527/20/1/9

摘要

This 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 65 m radio telescope,which provides a new way to diagnose the position error of the sub-reflector.

作者信息

序号	姓名	单位	发文数	被引次数	H指数	G指数
1	Jin-Qing Wang	中国科学院国家天文台	1	0	0.0	0.0
2	Rong-Bin Zhao	中国科学院国家天文台	1	0	0.0	0.0
3	Yong-Chen Jiang	中国科学院国家天文台	1	0	0.0	0.0
4	Zheng-Xiong Sun	中国科学院国家天文台	1	0	0.0	0.0
5	Lin-Feng Yu	中国科学院国家天文台	1	0	0.0	0.0
6	Li Fu	中国科学院国家天文台	1	0	0.0	0.0
7	Qin-Hui Liu	中国科学院国家天文台	1	0	0.0	0.0
8	Wei-Min Zheng	中国科学院国家天文台	1	0	0.0	0.0
9	Zhi-Qiang Shen	中国科学院国家天文台	1	0	0.0	0.0