多普勒效应可以用于激光雷达对目标速度的探测，在处理探测信号的频谱时，由于栅栏效应的存在，会导致离散多普勒频谱和真实速度之间的偏差。在雷达测速系统中运用能量重心校正算法来对离散频率进行校正，从而达到提高测速精度的目的。实验结果表明，该雷达测速系统的探测精度优于厘米每秒量级。

Doppler effect can be used to detect target velocity based on laser radar system. When processing the signal spectrum, error between Doppler frequency and target velocity is caused by picket fence effect. In order to improve the velocity detection accuracy, energy centrobaric correction method is demonstrated to correct discrete spectrum. Experiment data indicate that the velocity accuracy is better than 1 cm/s.