布儒斯特角在高速铁路场景下对于场强以及路径损耗的影响  

Impact of Brewster's Angle on Field Strength and Path Loss in High-speed Railway Scenarios

作　　者：陈雅洁 赵恒凯[1] 汪小勇 郑国莘[1] 

机构地区：[1]上海大学特种光纤与光接入网重点实验室,上海200444 [2]上海轨道交通无人驾驶列控系统工程技术研究中心,上海200071

出　　处：《工业控制计算机》2025年第1期151-153,共3页Industrial Control Computer

基　　金：上海市科委重点项目(22ZR1422200)资助。

摘　　要：服务于高铁乘客上网的5G覆盖,主要依靠轨旁基站信号穿透到列车车窗到达车厢内终端的无线链路。在实地测量后利用实测数据建立的信道模型仿真中,发现高铁通信场景中特定的站高下,信号直射与反射构成的场景存在路径损耗的跳变,经证明是由于地面反射中存在全折射,即入射角为布儒斯特角。推导了两径场景下的场强公式,仿真结果证明了公式的准确性,并利用对实地信道和高铁玻璃的真实测试数据校正了相关电磁场仿真参数。对5G基站链路设计有参考价值。The 5G coverage that serves high-speed rail passengers to access the Internet mainly relies on the wireless links from trackside base station signals that penetrate through train windows to terminals in the carriages.In the channel model simulation established by using the measured data after field measurement,it was found that in the high-speed rail communication scenario,there is a jump in path loss in the scene composed of direct signal and reflection at a specific station height.It is proved that it is due to the existence of total refraction in the ground reflection,that is,the angle of incidence is Brewster's angle.At the same time,this paper deduces the field strength formula in the two-path scenario.The simulation results prove the accuracy of the formula,and uses real test data on field channels and high-speed rail glass to correct the relevant electromagnetic field simulation parameters.This paper has reference significance for 5G base station link design.

关 键 词：高铁 布儒斯特角 路径损耗 LOS/NLOS 场强 

分 类 号：TN9[电子电信—信息与通信工程]