针对现有周界入侵检测系统存在的误报率高、定位精度低等问题,提出了一种单主机单发射单接收的泄漏电缆检测系统。该系统使用FPGA平台设计发射和接收单元,其发射单元采用Golay码编码、BPSK调制的设计方式,提高了发射信号的抗干扰性,大大降低了系统的误报率;其接收单元采用相关性测距方法检测信号的微弱变化并定位入侵目标,提高了系统的定位精度。经过实际测试,该系统具有定位精度高、误报率低、成本低等优点。 Aiming at the problems of the existing perimeter intrusion detection system, such as high false alarm rate and low positioning accuracy, a single-host single-shot single-receive leaky cable detection system is proposed. The system uses the FPGA platform to design the transmitting and receiving unit. The transmitting unit adopts Golay code and BPSK modulation to improve the anti-interference of the transmitted signal and greatly reduce the false positive rate of the system. The receiving unit adopts the correlation measure The method detects the weak change of the signal and locates the invading target, which improves the system’s positioning accuracy. After the actual test, the system has the advantages of high positioning accuracy, low false positive rate and low cost.