BDS／GP S双模定位技术在现代有轨电车中的应用研究

摘要

Real-time positioning and monitoring system is an essential component of modern tram operation con-trol system,which is a vital system to ensure operating safety of modern tram.In view of the shortcomings of tra-ditional GPS positioning,a high precision positioning system of modern tram based on BDS/GPS dual mode posi-tioning technology was studied.A new positioning scheme that is depent on BDS/GPS dual mode positioning mainly,RFID/DR secondarily in different track section was put forward in this paper.Additionally,a combina-tion of median filtering and Kalman filtering algorithm was proposed to improve the accuracy of dual mode positio-ning information.The result proves that the proposed method is more accurate and reliable than the traditional GPS positioning system,and can ensure the safe operation of modern tram.%实时定位监控系统是现代有轨电车运行控制系统的重要组成部分，它是确保现代有轨电车安全运行的关键系统。针对传统GPS定位存在的缺点，研究一种基于BDS／GPS双模定位技术的现代有轨电车高精度定位系统；提出一种以BDS／GPS双模定位为主，航迹推算／RFID定位为辅同时采用道路分段式的定位方案。为提高双模定位信息的精度，提出一种中值滤波和卡尔曼滤波相结合的数据处理算法。经过测试表明该方法比传统的现代有轨电车GP S定位系统更加准确、可靠，为现代有轨电车的安全运行提供了保障。