新型双频相干脉冲压缩测速测距激光雷达

New dual-frequency coherent pulse compression velocity and ranging laser radar

激光雷达具有抗干扰能力强、分辨率高、隐蔽性好等优点,已被广泛应用于精密测量、侦察监视、火控、制导等领域。针对远程激光测速测距中回波信号微弱难以检测的现实情况,提出了一种新的双频激光测速测距方法,采用脉冲压缩技术实现信号检测。通过实验,本文对该方法的原理进行了分析与验证。结果表明,该方法可以实现对运动目标的测速与测距。

With its advantages of strong anti-interference ability,high resolution and good concealment,laser radar has been widely used in precision measurement,reconnaissance surveillance,fire control guidance and other fields. Aiming at the reality that echo signal is weak and difficult to detect in the long distance laser speed measurement and ranging,a new dual-frequency laser speed measurement and ranging method is proposed,which uses pulse compression technology to detect the signal. The principle of this method is analyzed and verified by experiments.The results show that this method can measure the spee and distance of moving targets.