摘要
分析了高速铁路列车运行控制系统对列车定位技术的要求,针对我国铁路的具体情况,提出了GPS/DR/MM的组合定位方案。该方案将利用卡尔曼滤波技术进行多传感器数据融合,以平原地区采用GPS单独定位,信号遮挡区采用DR定位,站内采用查询应答器进行定位的方法,利用GPS和DR相互补足的特点,得到精度较高的定位数据,再将获得的组合定位数据与电子地图进行匹配,较一般列车定位系统相比,提高了列车测速定位系统的精度和可靠性。
The requirements for train locating technologies of the high speed railway is analyzed. According to the specific conditions of Chinese railways, an integrated GPS/DR/MM positioning scheme is put forward, which uses the Kalman filtering algorithm for multi sensor fusion. In the plain region, the location job is executed by GPS only, and in the blind area, DR is the executor, at railway stations, the positioning is done by balise. More accurate positing data is obtained by using the characters of GPS and DR. Then the data is matched with the electronic map. Compared with the general train locating system, the positing accuracy and reliability of the train speed measuring system is improved.
出处
《电子科技》
2009年第11期40-42,共3页
Electronic Science and Technology
