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辐射型泄漏电缆广泛应用于铁路、公路的无线通信系统中以解决其无线覆盖问题,而泄漏电缆入侵检测系统主要使用耦合性泄漏电缆。因此,针对市场上通信和入侵检测系统不能共用同一种泄漏电缆的问题,提出了一种针对通信用途的辐射型泄漏电缆入侵扰动测试系统。首先分析了入侵扰动检测原理,通过仿真论证了方法的正确性,然后采用安捷伦公司的频谱分析仪为该系统搭建了硬件测试平台,提出了对测试结果进行移动平均的预处理方法。实验结果表明,辐射型泄漏电缆可以有效地感应目标信号的扰动,验证了该类型泄漏电缆用于入侵目标检测的可行性。
Radiation leakage cable is widely used in railway, highway wireless communication system to solve its wireless coverage problems, and leak cable intrusion detection system mainly uses coupling leakage cable. Therefore, aiming at the problem that communication and intrusion detection systems on the market can not share the same type of leakage cable, a radiation leakage cable intrusion detection system for communication purpose is proposed. Firstly, the principle of intrusion detection is analyzed. The correctness of the method is verified by simulation. Then, a hardware test platform is built for the system by using Agilent Spectrum Analyzer. A moving average preprocessing method for testing results is proposed. The experimental results show that the radiation leakage cable can effectively detect the disturbance of the target signal and verify the feasibility of this type of leakage cable for intrusion detection.