M改型下滑天线与原始天线辐射性能差异性分析
华东空管局监控中心, 上海 200335
| 摘 要： | 对于M改型下滑天线与M型下滑天线结构相近，从信号原理和馈电原理入手，先从理论上分析M改型天线的基本信号辐射特征，与原始M型天线之间进行差异性分析。再从飞行校验的天线参数调整视角出发，根据飞行校验程序及信号采样规则，通过三元天线的结构馈电幅度相位，以及空间信号合成原理建立三维电磁模型。由理论分析和建模计算得出：入口高度，下滑角，对称性的变化特征，比较两中下滑天线各自的优势所在，在安装初期的设备选型中起到借鉴作用。 |
| 关 键 词： | 下滑天线; 对称性; 下滑角 |
| DOI： | 10.57237/j.cst.2025.04.003 |
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收稿日期: 2025-07-25
接受日期: 2025-10-28
在线出版日期: 2025-11-12
The Analysis of the Difference in Radiation Performance of M-Modification Glide Path Antenna and M-Type One
Equipment Operation Monitoring Center, CAAC, East China Regional Air Traffic Management Bureau of Civil Aviation of China, Shanghai 200335, China
| Abstract: | The M-modified glide path antenna has a similar structure to the M-typed one. Firstly, from the signal principle and feeding principle, the basic signal radiation characteristics of the M-modified glide path antenna would be theoretically analyzed, and then compared M-modified with the original M-typed one. Secondly, from the perspective of adjusting antenna parameters based on the flight checking procedure and sampling rules, the characteristics of changes in threshold crossing height (TCH), glide path angle, and symmetry are calculated by a three-dimensional electromagnetic model through the structure, as well as the feeding amplitude and phase of a ternary antenna, as well as the principle of spatial signal synthesis. The advantages of the two glide antennas are compared, which can serve as a reference for equipment selection during the initial installation stage. |
| Keywords: | Glide Path Antenna; Symmetry; Glide Path Angle |
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