摘要
城市轨道交通信号系统采用降级模式运行时,列车定位信息的精确度将大幅下降,这给行车安全带来了一定的安全隐患。利用民用通信4G(第四代移动通信技术)/5G(第五代移动通信技术)网络的无线信号,采用无线信号指纹定位算法,建立了列车定位模型,以辅助列车在地下线路区间进行精确定位。对上海轨道交通9号线列车及线路区间内的测速数据进行对比分析可知,采用该算法可达到200 m或更高的列车定位精度,基本能够满足列车降级运行下的辅助定位需求。
The accuracy of train positioning will be greatly reduced when the rail traffic signal system operates in degraded mode,that brings some hidden risks to the driving safety.Based on the civil communication 4G(fourth generation mobile communication technology)/5G(fifth generation mobile communication technology)network signals,and using the signal wireless signal fingerprint positioning algorithm,a train positioning model is established to assist the train accurate positioning in underground line intervals.Through comparison and analysis of the speed measurement data in Shanghai metro Line 9 trains and line sections,it shows that with this algorithm,the train positioning accuracy within 200 m or even higher can be achieved,therefore this algorithm can basically meet the auxi-liary positioning needs under degraded train operation mode.
作者
魏然之
吴杰
王森
WEI Ranzhi;WU Jie;WANG Sen(Telecom&Signaling Branch,Shanghai Metro Maintenance Support Co.,Ltd.,200235,Shanghai,China;不详)
出处
《城市轨道交通研究》
北大核心
2022年第11期94-97,102,共5页
Urban Mass Transit
关键词
城市轨道交通
地下区间
无线通信
列车辅助定位
无线信号指纹定位算法
urban rail transit
underground section
wireless communication
train auxiliary positioning
wireless signal fingerprint positioning algorithm
