基于数字孪生的天线结构优化设计
中国民用航空华东地区空中交通管理局, 设备运行监控中心, 上海 200335
| 摘 要： | 为开展民航数字分析技术的系统建设，更好地了解天线合成信号特点以及天线信号在外场的辐射特征。先根据典型空管导航设备的外场天线辐射系统，建立数字模型，对虚拟空间信号进行系统分析。再根据改善天线阵辐射场型的方法之一：通过改变天线方向性的设计，对天线的辐射特性参数进行优化，信号质量验证及开发创新。数字模型包含多种航向信标天线阵数据库建立，信号覆盖特性研究，空间调制度分析，抗干扰性能验证等模型输出。根据天线的辐射性能，以高增益天线为设计思路，仿真得出一种优化天线阵结构模型。设计模型数据计算分析表明：优化后的天线结构具备良好的覆盖特性，并拥有更强的抗干扰能力，弥补目前已产业化后广泛应用的天线阵系统，在超宽孔径设计上的不足。这个设计方法同样可应用与其它通信专业的天线上，为改善空间辐射信号提供有效方法。 |
| 关 键 词： | 天线设计; 信号覆盖; 增益; 结构优化; 对数周期偶极子天线; 天线阵 |
| DOI： | 10.57237/j.se.2024.04.003 |
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收稿日期: 2024-09-01
接受日期: 2024-11-01
在线出版日期: 2024-12-23
Design and Optimization of Antenna Structure Based on Digital Twin
Equipment Operation Monitoring Center, East China Regional Air Traffic Management Bureau of Civil Aviation of China, Shanghai 200335, China
| Abstract: | To develop the system construction of civil aviation digital analysis technology, and totally understand the charactersitics of signal synthesis of antenna as well as antenna signal in the external field. Firstly, according to the field antenna radiation system of typical ATC navigation equipment, the digital model is established and the virtual space signal has been analysised systematically. Secondly, optimized antenna radiation characteristics parameters, signal quality verification and development innovation by antenna directivity design, which is one of the methods to change the radiation field pattern of antenna array. The digital model of research mainly includes establishment of a series of localozer antenna array system database, reesarch of signal coverage characteristic, spatial modulation analysis, performance verification of anti-interference and data analysis methods. According to the radiation performance of the radiated antennas models, a kind of optimized antenna array is simulated by design inspiraiton of the high gain antenna. The analysis result shows that the new designed antenna system has good coverage characteristics and stronger anti-interference ability, at the same time, this makes up for the wide aperture defects of the current widely used antenna array after industrialization. This design idea also can be applied to other kinds of communicaiton antennas, providing an effective method for improving spatial siganl. |
| Keywords: | Antenna Design; Signal Coverage; Gain; Structure Optimization; LPDA; Antenna Array |
基金
| 1. | 《基于无人机的空管设备天线场型测试系统》, 华东空管局科技项目 (KJ1706), 2017-2018 |
| 2. | 《通信导航监视设备无线电相关应用技术研究》, 华东空管局科技项目 (KJ1807), 2018-2019 |
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