Application of DMLF in Pulse Ranging LiDAR System

A novel differential method based on linear fitting is proposed to improve the accuracy of pulse-ranging system. In this method, Peak Points (PPs) traditional echo signal transformed into Positive-Going Zero-Crossing (PGZCPs) signal. Then, we obtained true zero-crossing point by points near PGZCPs. We compared (DMLF) and peak method. The Root Mean Square Error (RMSE) found with our (0.1661 ns) nearly a 50% reduction that (0.3318 ns), large number experiments have demonstrated Relative (RE) less than 30 ppm.