激光与光电子学进展, 2020, 57 (19): 192804, 网络出版: 2020-09-27
激光雷达系统中脉冲整形电路研究 下载: 1345次
An Investigation on a Pulse-Shaping Circuit in Lidar Systems
传感器 激光雷达 时间间隔测量 脉冲整形 恒比定时电路 峰值检波 sensors lidar time interval measurement pulse shaping constant-ratio timing circuit peak detection
摘要
阐述了激光雷达系统中脉冲整形电路的作用,设计了基于恒比定时法和基于脉冲峰值检波法的脉冲整形电路,在实验室及室外条件下对两种脉冲整形电路的性能进行分析,验证了不同脉冲整形电路在激光雷达系统中的性能。结果表明,恒比定时电路与峰值检波电路都拥有亚ns级的时间鉴别能力,恒比定时电路的时间鉴别能力受距离、回波脉冲幅度影响很小,检测精度仍需继续优化。本研究为激光雷达系统的测距精度优化提供了参考。
Abstract
This study investigates the role of shaping circuits in lidar systems. Two types of pulse-shaping circuits based on the constant-ratio timing and pulse peak detection methods are designed. Performance experiments on the above mentioned pulse-shaping circuits are carried out in a laboratory and under external conditions to investigate the performance of different pulse-shaping circuits in lidar systems. The circuits based on the constant-ratio timing and pulse peak detection methods show sub-ns time discrimination capabilities. The time discrimination capability of the constant-ratio timing circuit is slightly affected by distance and echo pulse; therefore, the detection accuracy needs to be optimized. This study provides a reference for the optimization of the ranging accuracy of lidar systems.
陈星驰, 于笑楠, 佟首峰, 赵佰秋. 激光雷达系统中脉冲整形电路研究[J]. 激光与光电子学进展, 2020, 57(19): 192804. Xingchi Chen, Xiaonan Yu, Shoufeng Tong, Baiqiu Zhao. An Investigation on a Pulse-Shaping Circuit in Lidar Systems[J]. Laser & Optoelectronics Progress, 2020, 57(19): 192804.