Optimal subreflector position determination of shaped dual-reflector antennas based on the parameters iteration approach

doi:10.1088/1674-4527/19/4/62

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	Optimal subreflector position determination of shaped dual-reflector antennas based on the parameters iteration approach
	Xiang, Bin-Bin1,2 ; Wang, Cong-Si 1; Lian, Pei-Yuan 1; Wang, Na2 ; Ban, You 1
刊名	RESEARCH IN ASTRONOMY AND ASTROPHYSICS
	2019-04-01
卷号	19 期号:4 页码:10
关键词	methods: analytical methods: numerical telescope techniques: radar astronomy
ISSN号	1674-4527
DOI	10.1088/1674-4527/19/4/62
通讯作者	Wang, Cong-Si(congsiwang@163.com)
英文摘要	A new method based on the parameters iteration technique has been developed to determine the optimal subreflector position for shaped Cassegrain antennas, that are distorted by gravity, to improve their electromagnetic (EM) performance. Both the features of shaped surface and the relationship between optical path difference (OPD) and far field beam pattern are employed. By describing the shaped dual-reflector surface as a standard discrete parabola set, we can utilize the optical features of the standard Cassegrain system in the classical OPD relationship. Then, the actual far field beam pattern is expressed as the synthesis of ideal beam and error beam by decomposing subreflector adjustment parameters using a mechanical-electromagnetic-field-coupling-model (MEFCM). Furthermore, a numerical method for determining optimal subreflector position is presented. The proposed method is based on the iteration technique of subreflector adjustment parameters, and the optimal far field pattern is used for the iteration. The numerical solution of optimal adjustment parameters can be obtained rapidly. Results for a 25 m shaped Cassegrain antenna demonstrate that the adjustment of the subreflector to the optimal position as determined by the proposed method can improve the EM performance effectively.
资助项目	National Key Basic Research Program of China[2015CB857100] ; Chinese Academy of Sciences (CAS) Light of West China Program[2017-XBQNXZ-B-021] ; National Natural Science Foundation of China[51805399] ; National Natural Science Foundation of China[U1737211] ; Natural Science Foundation of Shanxi Province[2018JZ500] ; Operation, Maintenance and Upgrading Fund for Astronomical Telescopes and Facility Instruments from the Ministry of Finance of China (MOF)
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:000463893700014
资助机构	National Key Basic Research Program of China ; Chinese Academy of Sciences (CAS) Light of West China Program ; National Natural Science Foundation of China ; Natural Science Foundation of Shanxi Province ; Operation, Maintenance and Upgrading Fund for Astronomical Telescopes and Facility Instruments from the Ministry of Finance of China (MOF)
内容类型	期刊论文
源URL	[http://ir.xao.ac.cn/handle/45760611-7/2600]
专题	射电天文研究室_天线技术实验室
通讯作者	Wang, Cong-Si
作者单位	1.Xidian Univ, Sch Mechanoelect Engn, Key Lab Elect Equipment Struct Design, Minist Educ, Xian 710071, Shaanxi, Peoples R China 2.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China
推荐引用方式 GB/T 7714	Xiang, Bin-Bin,Wang, Cong-Si,Lian, Pei-Yuan,et al. Optimal subreflector position determination of shaped dual-reflector antennas based on the parameters iteration approach[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2019,19(4):10.
APA	Xiang, Bin-Bin,Wang, Cong-Si,Lian, Pei-Yuan,Wang, Na,&Ban, You.(2019).Optimal subreflector position determination of shaped dual-reflector antennas based on the parameters iteration approach.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,19(4),10.
MLA	Xiang, Bin-Bin,et al."Optimal subreflector position determination of shaped dual-reflector antennas based on the parameters iteration approach".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 19.4(2019):10.