数字式平均在激光脉冲回波弱信号检测中的应用

Application of Digital Average in Weak Pulsed Laser Echo Signal Detection

提出了利用数字式平均的方法实现激光脉冲回波弱信号检测。详细分析了数字式平均的原理和实现方法,利用Matlab的Simulink交互式仿真集成环境设计了仿真模型,利用仿真模型和信号还原系统分析了数字式平均的次数和信噪比善比之间的关系。实验表明,该方法能有效地改善激光脉冲回波弱信号的信噪比。

The method of Digital Average was presented to detect the weak pulsed laser echo signal. The theory and implementation of Digital Average were analyzed and a mimic model was designed using the Simulink integrated environment of Matlab. Using this mimic model and the signal reverted system, this paper studied the relationship between the added times of Digital Average and signal to noise rate. Experiments show that this method can greatly improve the signal to noise rate of the pulsed laser echo signal.