基于二次雷达的列车辅助防护系统通信方法研究

On the Communication Method of Train Auxiliary Protection System Based on Secondary Radar

目前,城市轨道车辆已逐渐开始使用二次雷达通信方法进行前、后列车距离检测,并用于列车安全的辅助防护。本文针对二次雷达通信过程中目标识别准确性、信息交互的有序性和稳定性等问题进行技术分析,重点研究了采用天线背瓣抑制技术和车辆身份识别技术解决通信中虚假目标问题,采用频带隔离技术和通信数据时隙分配等技术解决通信干扰和稳定性等问题,最后,综合应用上述关键技术提出了一种可行的雷达辅助防护系统通信方法。

At present,on urban rail vehicles,the secondary radar communication method has gradually begun to detect the distance between the front and rear trains,and also used for auxiliary protection of train safety.In this article,technical analysis is made on the accuracy of target identification,order and stability of information interaction in the communication process of secondary radar,and it focuses on the use of antenna back lobe suppression technology and vehicle identification technology to solve the problem of false targets in communication,and uses band isolation technology and communication data slot allocation technology to solve the problems of communication interference and stability.Finally,Based on the above key technologies,a feasible communication method of radar auxiliary protection system is proposed.