车载激光雷达Risley棱镜光束扫描系统

曾昊旻; 李松; 张智宇; 伍煜

doi:10.3788/OPE.20192707.1444

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车载激光雷达Risley棱镜光束扫描系统

现代应用光学 | 更新时间：2020-08-13

- 车载激光雷达Risley棱镜光束扫描系统
- Risley-prism-based beam scanning system for mobile lidar
- 光学精密工程 2019年27卷第7期页码：1444-1450
- 作者机构：
  
  武汉大学电子信息学院, 湖北武汉 430079
- 作者简介：
  
  [ "曾昊旻(1995-), 男, 湖南邵阳人, 博士研究生, 2012年于武汉大学获得学士学位, 主要从事激光雷达方面的研究。E-mail:zenghm@whu.edu.cn" ]
  李松(1965-), 女, 江苏镇江人, 教授, 博士生导师, 1986年、1989年于武汉测绘科技大学分别获得学士、硕士学位, 2002年于武汉大学获得博士学位, 主要从事激光遥感和激光测高等方面的研究。E-mail:ls@whu.edu.cn LI Song, E-mail:ls@whu.edu.cn
- 基金信息：
  
  国家自然科学基金资助项目(41506210);国家自然科学基金资助项目(41801261);国家科技重大专项(11-Y20A12-9001-17/18);国家科技重大专项(42-Y20A11-9001-17/18);中央高校基本科研业务费(2042018kf1009)
- DOI：10.3788/OPE.20192707.1444
  中图分类号： TN958.98
- 收稿日期：2018-11-01，
  
  录用日期：2019-1-5，
  
  纸质出版日期：2019-07-15
- 稿件说明：
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曾昊旻, 李松, 张智宇, 等. 车载激光雷达Risley棱镜光束扫描系统[J]. 光学精密工程, 2019,27(7):1444-1450.

Hao-min ZENG, Song LI, Zhi-yu ZHANG, et al. Risley-prism-based beam scanning system for mobile lidar[J]. Optics and precision engineering, 2019, 27(7): 1444-1450.
曾昊旻, 李松, 张智宇, 等. 车载激光雷达Risley棱镜光束扫描系统[J]. 光学精密工程, 2019,27(7):1444-1450. DOI： 10.3788/OPE.20192707.1444.

Hao-min ZENG, Song LI, Zhi-yu ZHANG, et al. Risley-prism-based beam scanning system for mobile lidar[J]. Optics and precision engineering, 2019, 27(7): 1444-1450. DOI： 10.3788/OPE.20192707.1444.

摘要

光束扫描系统是激光雷达的重要组成部分

决定了激光雷达的视场范围。为了增大视场范围同时保持一定的角度分辨率

车载激光雷达中常采用多个半导体激光器作为光源

而不同激光器的时间响应存在差异

使激光雷达的不同测距通道之间产生测距互差。Risley棱镜是一种常用的光束指向器件

具有扫描范围大、指向精度高等特点

在车载激光雷达的光束扫描上具备良好的应用前景。本文建立了Risley棱镜的光束指向角模型与扫描轨迹模型

在此基础上合理设计了扫描系统的光机结构

解决了Risley棱镜扫描不均匀的问题

用单路激光光源实现了大视场的二维扫描

水平视场角和垂直视场角分别达到360°和30.4°

当激光器脉冲重频为1 MHz

扫描频率为5 Hz

扫描线数为30线时

水平分辨率为0.05°

垂直分辨率为1.0°。该系统的技术指标与主流车载激光雷达相当

且消除了多路激光器之间的互差

可有效提高激光雷达的整体测距精度。

Abstract

A beam scanning system is a fundamental component of a light detection and ranging (lidar) system

as it determines the field of view (FOV). To increase the FOV and maintain a specific angular resolution

multiple laser diodes are often used in a mobile lidar. However

the time response of different laser diodes is different

resulting in a mutual ranging difference between different ranging channels of the lidar. Risley prisms are outstanding beam pointing devices that offer good prospects for beam scanning of mobile lidars because of their notable features such as large FOVs and high pointing precision. In this study

the optical and mechanical configurations of a scanning system are designed based on the beam-pointing and scan-pattern models

which can realize two-dimensional scanning over a wide FOV. The horizontal and vertical FOVs of the scanning system are 360° and 30.4°

respectively. When the scanning system operates at a frequency of 5 Hz and scan lines of 30 with a 1-MHz repetition rate laser

the horizontal and vertical resolutions are 0.05° and 1.0°

respectively. These performance indicators are comparable with those of mainstream mobile lidars and can meet the actual requirements of mobile lidars. Most importantly

this scanning system can eliminate ranging differences between different channels

and significantly improve the ranging precision of the lidar.

关键词

Keywords

references

董士军.车载激光雷达系统设计与实验研究[D].南京: 南京理工大学, 2017. http://cdmd.cnki.com.cn/Article/CDMD-10288-1017053311.htm

DONG SH J. System Design and Experimental Research of Vehicle Borne Lidar [D]. Nanjing: Nanjing University of Science and Technology, 2017. (in Chinese)

SCHWARZE C. A new look at Risley prisms[J]. Photonics Spectra , 2006, 40(6): 67-70.

LI Y J. Closed form analytical inverse solutions for Risley-prism-based beam steering systems in different configurations[J]. Applied Optics , 2011, 50(22): 4302-4309.

LI J Y, CHEN K, PENG Q, et al .. Improvement of pointing accuracy for Risley prisms by parameter identification[J]. Applied Optics , 2017, 56(26): 7358-7366.

ARTAMONOV S I, GRYAZNOV N A, KUPRENYUK V I, et al .. Selection of scanners for use in lidar systems[J]. Journal of Optical Technology , 2016, 83(9): 549.

洪华杰, 周远, 陶忠, 等. Risley棱镜在光学侦察中的应用[J].应用光学, 2014, 35(2): 179-187.

HONG H J, ZHOU Y, TAO ZH, et al .. Application of Risley prism on optical reconnaissance[J]. Journal of Applied Optics , 2014, 35(2): 179-187. (in Chinese)

范大鹏, 周远, 鲁亚飞, 等.旋转双棱镜光束指向控制技术综述[J].中国光学, 2013, 6(2): 136-150.

FAN D P, ZHOU Y, LU Y F, et al .. Overview of beam steering technology based on rotational double prisms[J]. Chinese Optics , 2013, 6(2): 136-150. (in Chinese)

ZHOU Y, FAN S X, CHEN Y, et al .. Beam steering limitation of a Risley prism system due to total internal reflection[J]. Applied Optics , 2017, 56(22): 6079-6086.

ZHANG H, YUAN Y, SU L J, et al .. Beam steering uncertainty analysis for Risley prisms based on monte Carlo simulation[J]. Optical Engineering , 2017, 56(1): 014105.

WANG L J, LIU L R, ZHU L, et al .. The mechanical design of the large-optics double-shearing interferometer for the test of diffraction-limited wavefront[J]. Proceedings of SPIE - the International Society for Optical Engineering , 2008, 7091:70910S-70910S-7.

LU Y F, ZHOU Y, HEI M, et al .. Theoretical and experimental determination of steering mechanism for Risley prism systems[J]. Applied Optics , 2013, 52(7): 1389-1398.

LI A H, LIU L R, SUN J F, et al .. Research on a scanner for tilting orthogonal double prisms[J]. Applied Optics , 2006, 45(31): 8063-8069.

LACOURSIERE J, DOUCET M, CURATU E O, et al .. Large-deviation achromatic Risley prisms pointing systems[J]. SPIE, 2002, 4773: 123-131.

CHURCH P, MATHESON J, CAO X, et al .. Evaluation of a steerable 3D laser scanner using a double Risley prism pair[J]. SPIE, 2017, 10197:101970O-10197O-9.

MARSHALL G F. Risley prism scan patterns[J]. SPIE , 1999, 3787:74-86.

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车载激光雷达Risley棱镜光束扫描系统设计（中国光学工程学会推荐稿件）