基于电磁场反演的高速磁浮毫米波接收场强预测

Millimeter Wave Receiving Field Strength Prediction of High Speed Maglev Based on Electromagnetic Field Inversion

为了检测高速磁浮列车毫米波天线接收场强,采用轨旁多点检测,通过路径损耗的归一化反演天线方向性函数,进一步预测列车车顶的电场强度。这种方法解决了在磁浮列车运行中在轨旁难以检测列车车顶电场强度分布的难题。在上海磁浮列车维护基地开展了基站天线场强覆盖测试,找到了最佳的基站天线方向性函数,并预测了基站覆盖,为高速磁浮场景下毫米波信道的场强测试提供了一种简便有效的检测方法。

In order to detect the receiving field intensity of millimeter wave antenna of high-speed maglev train,this paper adopts multi-point detection beside the track and inverts the antenna directivity function by normalized path loss,so as to further predict the electric field intensity of train roof.This method solves the problem that it is difficult to detect the distribution of electric field intensity on the roof of maglev train beside the track.The field intensity coverage test of base station antenna was carried out in Shanghai Maglev train maintenance base,and the optimal directional function of base station antenna was found,and the coverage of base station was predicted,which provided a simple and effective detection method for the field intensity test of millimeter wave channel in high-speed maglev scene.