航向台电磁信号覆盖分析系统设计

Design of Electromagnetic Signal Coverage Analysis System for Localizer

由于航向台电磁辐射场的有效覆盖范围与其部署的海拔高度、周边地形条件存在密切关系,因此,针对航向台周围的地形环境,设计了LOC天线模型,搭建了高性能GIS平台,构建了基于SRTM数据的高程数字地形模型,并结合无线电信号传输模型和衰减模型,运用Deygout算法预测无线电在地形遮蔽下的衍射损耗值,最后实现了对航向台无线电在地形下的覆盖范围仿真评估系统的软件设计,该软件可对航向台无线电的有效覆盖范围进行仿真分析评估。

Because the localizer’s effective coverage of the electromagnetic radiation field is directly proportional to its deployment altitude and terrain conditions. As a result, the LOC antenna model was designed, a high-performance GIS platform was built, and a digital elevation digital terrain model based on SRTM data was constructed, all in accordance with the terrain environment surrounding the localizer. The Deygout algorithm was used to estimate radio diffraction under terrain shielding when combined with the radio signal transmission model and attenuation model. The software design of the simulation and evaluation system for the coverage of the localizer radio under the terrain was realized, the software can simulate and analyze the effective coverage of the localizer radio.