面向新型列控系统的电子轨道地图数据约简方法研究  

Research on Digital Track Map Data Reduction MethodTowardsNext Generation Train Control System

作　　者：陆德彪[1,2,3] 王子琪 王剑 蔡伯根[1,2,4] 丁珣 LU Debiao;WANG Ziqi;WANG Jian;CAI Baigen;DING Xun(School of Electronics and Information Engineering,Beijing Jiaotong University,Beijing 100044,China;Beijing Engineering Research Center of EMC and GNSS Technology for Rail Transport,Beijing 100044,China;Frontiers Science Center for Smart High-speed Railway System,Beijing Jiaotong University,Beijing 100044,China;State Key Laboratory of Rail Traffic Control and Safety,Beijing Jiaotong University,Beijing 100044,China;Operation Management Department,China Railway Construction Electrification Bureau Group Co.,Ltd.,Beijing 100043,China)

机构地区：[1]北京交通大学电子信息工程学院,北京100044 [2]北京市电磁兼容与卫星导航工程技术研究中心,北京100044 [3]北京交通大学智慧高铁系统前沿科学中心,北京100044 [4]北京交通大学轨道交通控制与安全国家重点实验室,北京100044 [5]中国铁建电气化局集团有限公司运营管理部,北京100043

出　　处：《铁道学报》2023年第4期51-61,共11页Journal of the China Railway Society

基　　金：国家自然科学基金(62027809,U1934222,61873023,61803020)。

摘　　要：电子轨道地图是新型列控系统基于卫星导航的列车定位的重要参考源。为满足地图精度高、存储量低的要求,针对轨道线路数据约简方法开展研究。在面向直线表达的线路数据方面,对道格拉斯普克算法和基于线路数据航向角特征约束的约简2种算法的差异性进行比较;在此基础上面向线路数据的直线和曲线混合表达,提出一种基于Clothoid曲线的约简算法。利用曲线DP算法和垂直投影误差要求,得到Clothoid曲线片段,实现轨道圆曲线和直线的分段,提高线路数据的约简率,保障生成地图的精度。为验证提出方法的有效性,选取京沈高铁北票东—阜新北的线路数据进行分析,实验结果表明,基于Clothoid曲线拟合生成的轨道段满足0.5 m垂距精度和0.2 m测量精度,约简率达99.5%,证明提出的方法能够满足新型列控系统电子轨道地图数据约简的要求。The Digital Track Map(DTM)is the important reference source for the satellite-based train localization in Next Generation Train Control System(NGTC).To meet the requirements of high precision and low data storage in the DTM generation conditions,the track data reduction methods were investigated in this paper.In terms of the track data oriented to track representation using straight lines,the Douglas Pecuker algorithm and two reduction algorithms based on track data heading character constraint were studied.In terms of the track representation using both straight lines and curves,the Clothoid curve data reduction algorithm was proposed.The curve DP algorithm and the vertical projection error requirements were used to generate the Clothoid curve segments to realize the segmentation of circular curves and straight lines of the track.This method improved the track data reduction ratio while holding the DTM accuracy.To validate the proposed method,an analysis was made on the track data collected from Beipiao East to Fuxin North of Beijing-Shengyang High-speed Railway.The results show that,the Clothoid curve fitting generated track segments meet the technical requirements of the 0.5m vertical error and 0.2 m measurement accuracy with the reduction ratio of 99.5%.This proves that the method proposed in this paper can meet the requirement of data reduction of the DTM in the NGTC.

关 键 词：列车运行控制系统 电子轨道地图 数据约简 Clothoid曲线拟合 

分 类 号：U284.48[交通运输工程—交通信息工程及控制]