Institutional Repository of Radio Astronomy Research Laboratory
| 环境风载荷下大口径反射面天线波束指向分析 | |
| Alternative Title | Analysis of beam pointing of large aperture reflector antenna under ambient wind load |
栾天1; 薛松1,2; 连培园1,2; 余佳恒1; 杜雨轩1; 王猛3; 赵武林4; 卢波5; 许谦6 ; 王从思2
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| 2024-02-01 | |
| Source Publication | 工程设计学报
 |
| ISSN | 1006-754X |
| Volume | 31Issue:1Pages:98-106 |
| Contribution Rank | 6 |
| Abstract | 大口径反射面天线是深空探测、卫星通信的关键设备。为了不断提高观测性能，天线口径不断增大，进而对天线指向精度的要求越来越高。随着天线口径的增大，天线的刚度降低、迎风面积增大，这会导致天线的柔性变形严重，性能难以保证。为探究环境风载荷下大口径反射面天线的柔性变形对电性能的影响，提出了一种天线波束指向分析模型。首先，利用计算流体力学方法对天线表面的风压分布情况进行了数值模拟，得到了天线表面的风压系数。然后，利用风压系数与风速无关的特性，分析了不同风速工况下天线结构变形的规律。最后，根据天线结构变形的特点，分析了天线在不同工作状态下的增益损失、指向偏差等的变化规律。结果表明，所提出的模型可以快速评估大口径反射面天线在风载荷下的变形情况和波束指向特性，这为后续的天线抗风结构设计与系统控制研究提供了理论指导。 |
| Other Abstract | Large aperture reflector antenna is the key equipment for deep space exploration and satellite communication. In order to continuously improve the observation performance, the antenna aperture is increasing, and the antenna pointing accuracy requirements are higher and higher. With the increase of antenna aperture, the stiffness of antenna decreases while the windward area increases, which leads to serious flexible deformation of antenna and difficult to guarantee its performance. In order to investigate the influence of flexible deformation of large aperture reflector antenna on electrical performance under ambient wind load, a beam pointing analysis model for antenna is proposed. Firstly, the computational fluid dynamics method was used to numerically simulate the wind pressure distribution on the antenna surface, and the wind pressure coefficient of the antenna surface was obtained. Then, the deformation law of the antenna structure under different wind speed conditions was analyzed by using the independent characteristic of wind pressure coefficient and wind speed. Finally, according to the deformation characteristics of the antenna structure, the variation patterns of gain loss and pointing deviation of the antenna under different working states were analyzed. The results show that the proposed model can quickly evaluate the deformation and beam pointing characteristics of large aperture antennas under wind load, which provides theoretical guidance for the subsequent wind-resistant structure design and system control study of antennas. |
| Keyword | 反射面天线 风载荷 风压系数 柔性变形 波束指向特性 |
| DOI | 10.3785/j.issn.1006-754X.2024.03.308 |
| URL | 查看原文 |
| Indexed By | CSCD ; 中文核心期刊要目总览 |
| Language | 中文 |
| WOS ID | CSCD:7640691 |
| CSCD ID | CSCD:7640691 |
| Citation statistics |
Cited Times:1[CSCD]
[CSCD Record]
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| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/7579 |
| Collection | 射电天文研究室_天线技术实验室 |
| Corresponding Author | 薛松 |
| Affiliation | 1.西安电子科技大学 机电工程学院，陕西 西安 710071; 2.西安电子科技大学 广州研究院，广东 广州 510555; 3.陕西黄河集团有限公司，陕西 西安 710043; 4.中国电子科技集团有限公司 第三十九研究所，陕西 西安 710065; 5.湖北省鄂州市天元砂辊有限责任公司，湖北 鄂州 436001; 6.中国科学院 新疆天文台，新疆 乌鲁木齐 830011 |
| Recommended Citation GB/T 7714 | 栾天,薛松,连培园,等. 环境风载荷下大口径反射面天线波束指向分析[J]. 工程设计学报,2024,31(1):98-106. |
| APA | 栾天.,薛松.,连培园.,余佳恒.,杜雨轩.,...&王从思.(2024).环境风载荷下大口径反射面天线波束指向分析.工程设计学报,31(1),98-106. |
| MLA | 栾天,et al."环境风载荷下大口径反射面天线波束指向分析".工程设计学报 31.1(2024):98-106. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| 栾天-2024-环境风载荷下大口径反射面（4320KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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