提高激光告警系统信噪比的研究

Research in the digitized system of signal processing for laser warning

归纳一般激光告警系统模拟式处理脉冲激光信号的不足,提出以FPGA为核心的数字化激光告警信号处理系统。对脉冲激光信号进行A/D转换后,利用FIR数字滤波结合自相关检测的方法对脉冲激光信号进行处理,尽可能的把脉冲激光信号从干扰中充分恢复出来,以便告警装置能够迅速做出告警。经MATLAB仿真证明方法可行,并对其进行实验测试,且收到良好效果。

Analyzing the insufficiency of conventional laser warning system processing pulse laser signal by simulation type,proposed that take FPGA as the core of the digitization signal processing system.After the pulse laser signal by carrying on A/D transformation,carries on processing using the method of FIR digital filtering union autocorrelation examination to treatment the pulse laser signal,as far as possible restores fully the pulse laser signal from the disturbance,so that the alarm device can make the warning rapidly.Through the MATLAB simulation proof the method is feasible,and has carried on the experiment test to the method,and has received the good results.