Institutional Repository of Radio Astronomy Research Laboratory
| Measurement and Correction of Pointing Error Caused by Radio Telescope Alidade Deformation based on Biaxial Inclination Sensor | |
Xu, Qian1,2,3 ; Xue, Fei1; Wang, Hui1; Yi, Letian1
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| 2023-07-01 | |
| Source Publication | MICROMACHINES
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| Volume | 14Issue:7Pages:1283 |
| Contribution Rank | 1 |
| Abstract | One of the key reasons for the deterioration of antenna pointing accuracy for radio telescopes is the deformation and tilt of antenna alidades, which primarily result from track unevenness and thermal gradients. A high-precision inclinometer measurement system is installed to investigate the tilt of the antenna alidade and the pointing errors caused thermally. An environment control box with a leveling base was designed to reduce the interference of the external environment, which proved to be effective in guaranteeing the zero-point stability and repeat accuracy of the inclinometer. The tilt of the alidade caused by the track unevenness was measured by a test of slowly rotating the antenna along the azimuth at windless nighttime. A 5-day antenna stationary test and a 48 h astronomical pointing error measurement were performed, which proved the inclinometer measurement system is capable of measuring the thermally induced inclinations with acceptable accuracy. Through a preliminary compensation experiment, the pointing error is compensated from 37 & DPRIME; to 12 & DPRIME;, which shows that the application of the system has a good effect on improving the pointing accuracy of the antenna. The system with high measurement accuracy, good system stability, and low computational complexity, proves an effective tool for the radio telescope to solve the problem of real-time measurement and compensation for antenna pointing errors. |
| Keyword | inclinometer pointing errors radio telescope alidade thermal gradients track unevenness |
| DOI | 10.3390/mi14071283 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | Natural Science Foundation of Xinjiang Autonomous Region[2021D01B111] ; National Key Research and Development Program of China[2021YFC2203601] ; Youth Innovation Promotion Association, CAS[Y202019] ; Ministry of Finance of China (MOF) ; Scientific Instrument Developing Project of the Chinese Academy of Sciences[PTYQ2022YZZD01] |
| WOS Research Area | Chemistry ; Science & Technology - Other Topics ; Instruments & Instrumentation ; Physics |
| WOS Subject | Chemistry, Analytical ; Nanoscience & Nanotechnology ; Instruments & Instrumentation ; Physics, Applied |
| WOS ID | WOS:001073417000001 |
| Publisher | MDPI |
| Funding Organization | Natural Science Foundation of Xinjiang Autonomous Region ; National Key Research and Development Program of China ; Youth Innovation Promotion Association, CAS ; Ministry of Finance of China (MOF) ; Scientific Instrument Developing Project of the Chinese Academy of Sciences |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/5452 |
| 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.Xinjiang Key Lab Radio Astrophys, Urumqi 830011, 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,Xue, Fei,Wang, Hui,et al. Measurement and Correction of Pointing Error Caused by Radio Telescope Alidade Deformation based on Biaxial Inclination Sensor[J]. MICROMACHINES,2023,14(7):1283. |
| APA | Xu, Qian,Xue, Fei,Wang, Hui,&Yi, Letian.(2023).Measurement and Correction of Pointing Error Caused by Radio Telescope Alidade Deformation based on Biaxial Inclination Sensor.MICROMACHINES,14(7),1283. |
| MLA | Xu, Qian,et al."Measurement and Correction of Pointing Error Caused by Radio Telescope Alidade Deformation based on Biaxial Inclination Sensor".MICROMACHINES 14.7(2023):1283. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Xu-2023-Measuring An（2162KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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