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Optical Engineering

Depth resolution improvement of streak tube imaging lidar using optimal signal width
Author(s): Guangchao Ye; Rongwei Fan; Wei Lu; Zhiwei Dong; Xudong Li; Ping He; Deying Chen
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Paper Abstract

Streak tube imaging lidar (STIL) is an active imaging system that has a high depth resolution with the use of a pulsed laser transmitter and streak tube receiver to produce three-dimensional (3-D) range images. This work investigates the optimal signal width of the lidar system, which is helpful to improve the depth resolution based on the centroid algorithm. Theoretical analysis indicates that the signal width has a significant effect on the depth resolution and the optimal signal width can be determined for a given STIL system, which is verified by both the simulation and experimental results. An indoor experiment with a planar target was carried out to validate the relation that the range error decreases first and then increases with the signal width, resulting in an optimal signal width of 8.6 pixels. Finer 3-D range images of a cartoon model were acquired by using the optimal signal width and a minimum range error of 5.5 mm was achieved in a daylight environment.

Paper Details

Date Published: 26 October 2016
PDF: 7 pages
Opt. Eng. 55(10) 103112 doi: 10.1117/1.OE.55.10.103112
Published in: Optical Engineering Volume 55, Issue 10
Show Author Affiliations
Guangchao Ye, Harbin Institute of Technology (China)
Rongwei Fan, Harbin Institute of Technology (China)
Wei Lu, Harbin Institute of Technology (China)
Zhiwei Dong, Harbin Institute of Technology (China)
Xudong Li, Harbin Institute of Technology (China)
Ping He, Harbin Univ. of Commerce (China)
Deying Chen, Harbin Institute of Technology (China)

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