讨论了将脉冲信号积累应用于相干激光雷达的具体方法,并利用Simulink软件平台对信号处理过程进行仿真。由仿真结果可知,在相应的设定下,进行0.028 s以上的相干积累,信噪比(SNR)增益可达22 dB以上;如果在0.007 s内先进行短时相干积累,再进行非相干积累,当积累总时间超过0.020 s时,信噪比增益将达到18 dB 以上。

We discuss the methods to apply pulse integration in coherent lidar, and simulate the course of signal processing by Simulink softplat. According to the result of the simulation, under certain parameters set, signal-noise ratio (SNR) can achieve 22 dB at least, when the coherent integrated time is more than 0.028 s. If we process a shot-time coherent integration within 0.007 s at first, then process non-coherent integration, SNR can achieve 18 dB at least, when the total integrated time is more than 0.020 s.