城市轨道交通地下段列车辅助定位方法研究
魏然之1吴杰1王森2
Train Auxiliary Positioning Method in Urban Rail Transit Underground Section
WEI RanzhiWU JieWANG Sen
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作者信息:1.1.上海地铁维护保障有限公司通号分公司， 200235， 上海；
2.2.上海申通地铁集团有限公司技术中心， 201103， 上海
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Affiliation:Telecom & Signaling Branch, Shanghai Metro Maintenance Support Co., Ltd., 200235, Shanghai, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2022.11.021
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中图分类号/CLCN:U284.48+3
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栏目/Col:研究报告
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。
Abstracts:
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.
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