Depth resolution improvement of streak tube imaging lidar system using three laser beams

作者：Chen, Zhaodong; Fan, Rongwei; Ye, Guangchao; Luo, Tong; Guan, Jiayu; Zhou, Zhigang; Chen, Deying^*

来源：Chinese Optics Letters, 2018, 16(4): 041101.

DOI：10.3788/COL201816.041101

The work proposes a three-laser-beam streak tube imaging lidar system. Besides the main measuring laser beam, the second beam is used to decrease the error of time synchronization. The third beam has n + 0.5 pixels' difference compared to the main measuring beam on a CCD, and it is used to correct the error caused by CCD discrete sampling. A three-dimensional (3D) imaging experiment using this scheme is carried out with time bin size of 0.066 ns (i.e., corresponding to a distance of 9.9 mm). An image of a 3D model is obtained with the depth resolution of <2 mm, which corresponds to similar to 0.2 pixel.

• 出版日期2018-4-10
• 单位黑龙江工程学院; 哈尔滨工业大学