【摘要】 城市轨道交通CBTC(基于通信的列车控制)系统运行于WLAN2.4 GHz公共频段,存在同频干扰问题。车地无线通信系统依据"专频、专网、低频段"思路设计,能有效避免同频干扰。试验所用的CBTC无线通信系统采用基于漏缆传输技术的400 MHz新型系统结构。同时,根据真实的CBTC信号流,设计出CBTC信号仿真平台。试验结果表明,这种基于漏缆传输的区间无有源设备方案具有高可靠性和实用性。更多还原

【Abstract】 Urban rail transit CBTC is running on the WLAN2.4 GHz public band,but the same frequency interference needs to be solved.On the basis of "dedicated frequency,dedicated net and low band"principle,a train/ground wireless communication system is designed to solve this potential security problem.The CBTC wireless communication system in the test adopts an innovative system structure of leaky coaxial cable transmission,which runs at400 MHz frequency band.According to the real signal stream of CBTC system,a simulation platform of CBTC signal system is set up.The experiment results show that the scheme of transmission based on leaky coaxial cable and regular interval without active devices has higher reliability and practicability.更多还原