郭静菁, 费晓燕, 葛鹏, 周安然, 王磊, 李正琦, 盛磊. 基于全光纤光子计数激光雷达的高分辨率三维成像[J]. 红外与激光工程, 2021, 50(7): 20210162. DOI: 10.3788/IRLA20210162
引用本文: 郭静菁, 费晓燕, 葛鹏, 周安然, 王磊, 李正琦, 盛磊. 基于全光纤光子计数激光雷达的高分辨率三维成像[J]. 红外与激光工程, 2021, 50(7): 20210162. DOI: 10.3788/IRLA20210162
Guo Jingjing, Fei Xiaoyan, Ge Peng, Zhou Anran, Wang Lei, Li Zhengqi, Sheng Lei. High-resolution three-dimensional imaging based on all-fiber photon-counting Lidar system[J]. Infrared and Laser Engineering, 2021, 50(7): 20210162. DOI: 10.3788/IRLA20210162
Citation: Guo Jingjing, Fei Xiaoyan, Ge Peng, Zhou Anran, Wang Lei, Li Zhengqi, Sheng Lei. High-resolution three-dimensional imaging based on all-fiber photon-counting Lidar system[J]. Infrared and Laser Engineering, 2021, 50(7): 20210162. DOI: 10.3788/IRLA20210162

基于全光纤光子计数激光雷达的高分辨率三维成像

High-resolution three-dimensional imaging based on all-fiber photon-counting Lidar system

  • 摘要: 为了实现全天时、高分辨率三维成像探测,文中提出了一种工作波长为1064 nm的光子计数激光雷达系统。其中,光学系统采用全光纤结构,增强了系统稳定性。雷达通过整机扫描方式对远距离目标进行成像探测,扩大扫描视场,水平方向达到360°,俯仰方向达到±30°,同时避免了由摆镜扫描引起的几何畸变;结合亚像素扫描方法,提高空间分辨率。最后通过自适应噪声阈值的多距离重建算法实现了目标的三维重建。实验结果表明,此系统在白天成功实现了3.1 km以外目标的三维重建,重建图像目标特征清晰,距离精度为0.11 m,空间分辨率为0.11 m,超过光学系统衍射极限。

     

    Abstract: A 1064 nm photon-counting Lidar system was experimentally demonstrated to realize high-resolution three-dimensional(3D) imaging all day. Herein, the optical system was composed of all-fiber components, which improved the system stability. Objects in long distance could be detected by Lidar system through whole machine scanning and the scanning view reached 360° in horizon and ±30° in azimuth direction. Also, the geometry distortion was avoided compared to swing mirror scanning. Additionally, the spatial resolution was increased by using a sub-pixel scanning method. Finally, 3D images could be reconstructed by a multi-range reconstruction algorithm with self-adaptive noise threshold. Results showed that a 3D object 3.1 km away was successfully reconstructed in daytime with clear features. The ranging accuracy was 0.11 m. The spatial resolution was about 0.11 m, beyond the diffraction limit of the optical system.

     

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