城市轨道交通CBTC信号系统无线通信抗干扰技术研究

Research of Wireless Communication Anti-interference Technology for CBTC Signaling System of Urban Rail Transit

针对目前国内城市轨道交通信号系统广泛采用的基于通信的列车自动控制系统(CBTC),使用2.4 GHz公共频段,在城市无线网络覆盖日益广泛的今天易受外界干扰问题,对CBTC系统的抗干扰能力进行分析,指出问题所在,并提出应对策略。

At present most of the signal system of urban rail transit are communication-based train control systems, for short CBTC. Because the CBTC system makes use of 2.4 GHz public frequency band in ac- tual applications, it is vulnerable to outside interferences especially in today with ever-increasing coverage of urban wireless networks. In this paper, the anti-interference ability of the CBTC system is analyzed and problems are listed and countermeasures are proposed.