摘要
基于CBTC的车地通信系统中,必须考虑到实际通信环境以及通信延时等。就常见的矩形隧道和拱形隧道中传输特性分别展开研究,建立可靠的通信模型;针对经典的双向时间同步机制,做出了时钟漂移补偿以及异常数据的过滤的改进,有效减小网络延时,进而保证列车的安全运行。
Consideration must be given to the actual communication environment ana aelay in CBTC; [raln-grouna communicauon system.Transfer charcteristic in Common rectangular tunnel and arched tunnel are studied to establish a reliable communication model.Then based on the classical two-way time synchronization mechanism,the clock drift compensation and abnormal data filtering are improved to reduce the network delay effectively and ensure the safe operation of trains.
出处
《工业控制计算机》
2013年第2期22-24,共3页
Industrial Control Computer
关键词
轨道交通
车地通信
时延
rail transit
train-ground communication
delay
