Institutional Repository of Radio Astronomy Research Laboratory
| Analysis and compensation of the reflector antenna pointing error under wind disturbance | |
Xu, Qian1,2 ; Zhang, Jie1,3; Wang, Zhao-Yu3; Pan, Huan-Zhi3
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| 2021-08-01 | |
| Source Publication | RESEARCH IN ASTRONOMY AND ASTROPHYSICS
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| ISSN | 1674-4527 |
| Volume | 21Issue:6Pages:150 |
| Contribution Rank | 1 |
| Abstract | A large reflector antenna has been widely used in satellite communications, gravitational wave detection, galaxy origin observation and other fields due to its narrow beam and high gain. With the increase of the antenna aperture and the improvement of the working frequency, the requirements for the pointing accuracy of an antenna are also rising. However, the effect of environmental load on the deformation of the antenna structure, which in turn affects its beam pointing, has become a key problem to be solved urgently in the antenna engineering applications. The key issue to solving this problem involves accurately estimating the pointing error caused by the structural deformation and designing an effective controller that is based on the structural deformation. In this paper, we first establish a dynamic model for antenna structure based on the modal superposition method. The model is then modified by using modal characteristics and the dynamic displacement information of the sampling points to achieve the purpose of accurately estimating the structural deformation. Secondly, by considering the influence of the deformation of the rotating shaft and the reflector surface on the pointing accuracy, a control-oriented pointing error analysis model is established for estimating the pointing error caused by the environmental load in real time. Thirdly, based on considering the influence of the shaft deformation on the error compensation, the feedback error amount is decoupled and corrected to improve the accuracy of the compensation error. Finally, this paper analyzes and verifies the 65 m S/X-band dual reflector antenna with a numerical example. We consider a fluctuating wind with an average wind speed of 10 m s(-1) as an example, which results in a maximum pointing error of 55.82 '' as calculated by the antenna theoretical model, whereas the maximum pointing error as predicted by our model is 68.27 ''. The pointing error after compensating for the cause of the environmental load with the modified controller is reduced to 10.57 '', which effectively improves the antenna pointing performance. |
| Keyword | telescopes methods analytical methods numerical |
| DOI | 10.1088/1674-4527/21/6/150 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | Chinese Academy of Sciences (CAS) Light of West China Program[2017-XBQNXZ-B-023] ; Xinjiang Uygur Autonomous Region Tianshan innovation team[2018D14008] ; Heaven lake Hundred-Talent Program of Xinjiang Uygur Autonomous Region of China ; Natural Science Basic Research Plan in Shaanxi province of China[2019JQ-269] ; Operation, Maintenance and upgrading Fund for Astronomical Telescopes and Facility Instruments |
| WOS Research Area | Astronomy & Astrophysics |
| WOS Subject | Astronomy & Astrophysics |
| WOS ID | WOS:000684225600001 |
| Publisher | NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES |
| Funding Organization | Chinese Academy of Sciences (CAS) Light of West China Program ; Xinjiang Uygur Autonomous Region Tianshan innovation team ; Heaven lake Hundred-Talent Program of Xinjiang Uygur Autonomous Region of China ; Natural Science Basic Research Plan in Shaanxi province of China ; Operation, Maintenance and upgrading Fund for Astronomical Telescopes and Facility Instruments |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/4219 |
| Collection | 射电天文研究室_天线技术实验室 110米口径全可动射电望远镜（QTT）_技术成果 |
| Corresponding Author | Xu, Qian |
| Affiliation | 1.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China 2.Chinese Acad Sci Radio Astron, Key Lab, Urumqi 830011, Peoples R China 3.Xidian Univ, Key Lab Elect Equipment Struct Design, Minist Educ, Xian 710071, Peoples R China |
| First Author Affilication | Xinjiang Astronomical Observatory, Chinese Academy of Sciences |
| Corresponding Author Affilication | Xinjiang Astronomical Observatory, Chinese Academy of Sciences |
| Recommended Citation GB/T 7714 | Xu, Qian,Zhang, Jie,Wang, Zhao-Yu,et al. Analysis and compensation of the reflector antenna pointing error under wind disturbance[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2021,21(6):150. |
| APA | Xu, Qian,Zhang, Jie,Wang, Zhao-Yu,&Pan, Huan-Zhi.(2021).Analysis and compensation of the reflector antenna pointing error under wind disturbance.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,21(6),150. |
| MLA | Xu, Qian,et al."Analysis and compensation of the reflector antenna pointing error under wind disturbance".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 21.6(2021):150. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Xu-2021-Analysis and（4011KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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