Real-time temperature estimation method for electromagnetic performance improvement of a large axisymmetric radio telescope under solar radiation
文献类型：期刊论文
| 作者 | Lian, Peiyuan1; Wang, Congsi1; Xu, Qian2 ; Xiang, Binbin2; Shi, Yu3; Jia, Yu4; Wang, Wei1; Xu, Wanye1
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| 刊名 | Iet Microwaves Antennas & Propagation
 |
| 出版日期 | 2020-10-01 |
| 卷号 | 14期号:13页码:1635-1642 |
| 关键词 | radiotelescopes temperature sensors reflector antennas solar radiation temperature database table look-up method temperature field estimation speed real-time estimated temperature field temperature sensors real-time compensation axisymmetric telescopes time temperature estimation method electromagnetic performance improvement axisymmetric radio telescope solar radiation electromagnetic performances EM performance improvements temperature simulation fast estimation method transient temperature field simulation high-frequency radio telescopes large-aperture radio telescopes reflector antenna reflector antennas surface error adjustment pattern field Engineering Telecommunications |
| ISSN号 | 1751-8725 |
| DOI | 10.1049/iet-map.2018.5785 |
| 产权排序 | 2 |
| 文献子类 | Article |
| 英文摘要 | The temperature field caused by solar radiation can seriously affect the electromagnetic (EM) performances of large-aperture and high-frequency radio telescopes, and achieving the EM performance improvements under solar radiation is of great importance. In this study, combining temperature simulation and measurement, a fast estimation method of the temperature field is presented. First, a temperature database based on transient temperature field simulation is constructed in advance, and by utilising the telescope's axisymmetric structure, the dimension of the database can be greatly reduced. Then, a small number of temperature sensors are installed and the real-time measured data are applied to correct the simulation temperature field extracted from the above temperature database by the table look-up method, which can ensure the temperature field estimation speed. Thus, based on the real-time estimated temperature field and the telescope's finite element model, thermal deformations can be calculated in real-time and used for deformation compensation. A 7.3 m reflector antenna with 21 temperature sensors is adopted to verify the proposed strategy, and the results show the effectiveness and feasibility of the strategy. This study can provide helpful guidance for the real-time compensation of thermal deformations derived from large axisymmetric telescopes. |
| 语种 | 英语 |
| WOS记录号 | WOS:000586657000020 |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/4058]  |
| 专题 | 射电天文研究室_天线技术实验室 |
| 通讯作者 | Wang, Congsi |
| 作者单位 | 1.School of Electromechanical Engineering, Xidian University, No.2 Taibai South Road, Xi'an 710071, People's Republic of China; 2.Xinjiang Astronomical Observation, Chinese Academy of Sciences, No.150 Science 1-Street, Urumqi 830011, People's Republic of China; 3.Department of Mechanical Engineering, University of Chester, Chester CH2 4NU, UK; 4.Department of Mechanical Engineering, Aston University, Aston Triangle, Birmingham B4 7ET, UK |
| 推荐引用方式 GB/T 7714 | Lian, Peiyuan,Wang, Congsi,Xu, Qian,et al. Real-time temperature estimation method for electromagnetic performance improvement of a large axisymmetric radio telescope under solar radiation[J]. Iet Microwaves Antennas & Propagation,2020,14(13):1635-1642. |
| APA | Lian, Peiyuan.,Wang, Congsi.,Xu, Qian.,Xiang, Binbin.,Shi, Yu.,...&Xu, Wanye.(2020).Real-time temperature estimation method for electromagnetic performance improvement of a large axisymmetric radio telescope under solar radiation.Iet Microwaves Antennas & Propagation,14(13),1635-1642. |
| MLA | Lian, Peiyuan,et al."Real-time temperature estimation method for electromagnetic performance improvement of a large axisymmetric radio telescope under solar radiation".Iet Microwaves Antennas & Propagation 14.13(2020):1635-1642. |
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来源：新疆天文台
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