摘要
青藏线格拉段ITCS系统使用GPS技术进行列车定位和虚拟闭塞分区占用检查。GPS卫星分布状态不良、地形影响、ITCS卫星定位技术缺陷等因素叠加,在小南川站、昂嘎站等偏远地区、特定时段条件下,易发生列车安全缓冲区变长,造成ITCS系统软件计算的列车长度变长,影响列车正常接发。故对GPS定位不良进行分析,提出解决措施。
The ITCS system in the Golmud-Lhasa section of Qinghai-Tibet line uses GPS technology for train positioning and occupancy check on virtual block.Because the impacts of GPS satellite distribution in bad condition,topography,defects in ITCS satellite positioning technology and other factors are superimposed,the variable length of train safety buffer may be enlarged and the train length calculated by the ITCS system software may also be enlarged in small railway stations such as Nanchuan,Angga and other special place in a special period of time so that the normal receiving and departure of trains would be affected.Therefore,bad conditions of GPS positioning are analyzed and corresponding solution is proposed.
出处
《铁道通信信号》
2016年第6期62-65,共4页
Railway Signalling & Communication
关键词
青藏铁路
ITCS系统
故障
分析
Qinghai-Tibet railway
ITCS system
Fault
Analysis
