GSM-R干扰源时差定位方法及性能分析  

Time difference Location and Performance Analysis of GSM-R Interference Source

作　　者：何平川[1] 石玉 尉旭波 

机构地区：[1]中铁二院工程集团有限责任公司,成都610031 [2]成都兴仁科技有限公司,成都610041

出　　处：《高速铁路技术》2017年第3期24-27,40,共5页High Speed Railway Technology

摘　　要：针对铁路移动通信系统(GSM-R)面临的干扰源定位问题,采用一种基于时间到达差(TDOA)的定位方法,并从时差估计精度和定位几何稀释度(GDOP)两方面推导分析了该方法的时差估计与定位误差的影响因素。针对GSM-R的宽频干扰信号时,文章定位方法在不同时差估计精度条件下都能实现干扰源高精度定位,满足铁路通信测定排除干扰的要求。最后,在三角布站条件下通过仿真验证了该方法对GSM-R干扰源定位的有效性。In order to solve the problem of interference source localization of Global System for Mobile Communication for Railway （GSM-R） , a positioning method based on the time difference of arrival （TDOA） is proposed. The influence factors of time difference estimation and positioning error are analyzed from two aspects ： the estimation accuracy of time difference and the geometric dilution of precision （GDOP）. Based on wild bandwidth GSM-R interference signal, the method can achieve high precision positioning in different time difference estimated accuracy, which can meet the requirement of eliminating interference in railway communication. Finally, the simulation under the condition of triangle station distribution s verifies the validity of the method for GSM-R interference localization.

关 键 词：GSM-R 干扰源 定位 监测 三角布站 

分 类 号：U228.2[交通运输工程—道路与铁道工程]