目前列车信号控制系统中有固定闭塞系统和移动闭塞系统。
At present, the train signal systems include the fixed block system and the moving block system.
介绍城市轨道交通中，移动闭塞系统的后备模式的由来、定义及其功能。
This paper describes the origin, definition and function of fallback mode of moving block system for urban rail transit.
但是当环线、多个扩频电台、中央控制单元(“集中式”移动闭塞系统)等设备出现故障时，系统将无法工作在ATC模式下。
But when loops, several spread-spectrum radios and centre control unit (moving block system with 'centralized' structure) fail, the system can not be running in the ATC mode.
针对移动自动闭塞系统的特点，研究开发了列车运行仿真系统(MAS- SIM)，用于移动自动闭塞条件下的行车组织若干问题的研究。
A train operation simulation system (MAS sim) is developed for the purpose of studying various issues concerning traffic organization under Moving Automatic Block condition.
西安地铁2号线信号系统采用完整的、基于无线通信技术的、移动闭塞制式的CBTC列车自动控制系统。
CBTC is adopted for signal system of Xi 'an Subway Line 2, which is a complete and movable block train control system based on wireless communication technology.
本文在前人对基于通信的列车控制系统研究的基础上，分析了基于通信的列车控制系统的优缺点，提出了基于AIS、GIS的移动自动闭塞系统的系统模型。
Through the former research of CBTC, it analyzes the advantages and disadvantages of CBTC and puts forward to a MAS system model based on AIS and GIS.
准移动闭塞信号系统研究的追踪列车间的安全间隔距离与旧的信号系统下相比较短，缩短了列车的追踪间隔时间，有利于提高铁路通过能力。
Compared with the old signal system, the (signal system of) quasi-moving block shortens the safe distance of inter-train tracking interval and improves railway passing capability.
准移动闭塞信号系统研究的追踪列车间的安全间隔距离与旧的信号系统下相比较短，缩短了列车的追踪间隔时间，有利于提高铁路通过能力。
Compared with the old signal system, the (signal system of) quasi-moving block shortens the safe distance of inter-train tracking interval and improves railway passing capability.
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