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轨道交通列车与轨旁接入点设备之间的无线传输是基于通信的列车控制系统中的关键技术。为了测试该无线系统在常规和具有电磁干扰的隧道环境下的性能,提出了一个可以仿真隧道无线电通信环境的测试平台。其特点是信道电路工作在射频频段,用射线跟踪方法研究无线电传播特性,并将结果固化为衰落和衰减信道;动态的矩阵信道可以仿真高速移动下的车地多点接入环境,可以加入电磁干扰来测试极限参数下无线电系统的性能。
The wireless transmission between the rail transit train and the trackside access point equipment is a key technology in the train-based communication control system. In order to test the performance of the wireless system under conventional and electromagnetic interference environment, a test platform that can simulate the tunnel radio environment is proposed. Its characteristic is that the channel circuit works in the radio frequency band, studies the radio propagation characteristics by using the ray tracing method, and solidifies the result into the fading and attenuating channels. The dynamic matrix channel can simulate the multi-point access environment under the high-speed movement and can join the electromagnetic Interference to test the performance of radio systems under extreme parameters.