基于回波强度的激光测距误差补偿算法研究

Algorithm Research of Error Compensation for Laser Ranging Based on Echo Intensity

针对脉冲激光测距中回波强度变化引入的时刻鉴别误差,提出一种基于回波强度测量的误差补偿算法。通过分析回波强度与时刻鉴别误差的关系,阐述了该误差补偿算法的基本原理。通过基于固定阈值前沿时刻鉴别的脉冲激光测距样机验证了该算法的补偿精度,并分析影响误差补偿精度的因素,提出了进一步提高测距精度的措施。

Timing discrimination error induced by variation of echo intensity is one of the main error sources in pulse laser ranging.A compensation algorithm based on echo intensity is proposed.Principle of the algorithm is elucidated by analyzing the relationship between echo intensity and timing discrimination error.The compensation accuracy of the algorithm is demonstrated with a laser ranging prototype based on leading-edge timing discrimination.Factors effect the compensation accuracy are analyzed and measures are proposed to improve the accuracy.