基于北斗-陀螺仪组合定位的轨道占用判别方法研究

Research on Beidou-GYRO Integrated Positioning Based Track Occupancy Discrimination Method

自主定位是CTCS-4级列控系统对列车定位的要求。在车站内的平行股道区段,轨道占用判别是列控系统获取列车位置信息的重要环节,而现有判别方法尚未满足CTCS-4级列控系统需要。本文使用北斗卫星导航系统与微机械陀螺仪组合定位的技术进行列车定位,重点研究其中的列车轨道占用判别方法。该方法应用模式识别,对从卫星定位系统及惯性传感器获得的列车运行状态进行实时分析,判别当前轨道占用。实验表明,该方法响应时间小于3s,对样本数据判别结果与实际相符,能够很好的辅助列车获取位置信息。

Autonomous positioning is the requirement of the CTCS-4 Train Control System for train positioning.In parallel track sections in a station,track occupancy discriminantion is the key point to get the accurate and real-time train position.The existing discrimination methods have not yet met the train control system requirements.In this paper,the positioning technology combining the Beidou Navigation Satellite and the MEMS gyroscope was applied,wherein the track occupancy discriminant was focused.Pattern recognition was used to make real-time analysis on train states known from the satellite positioning system and inertial sensors.The experimental results show that the response time is less than 3s and identification results match real situations,which proves the method serves well for the train to obtain position information.