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Proceedings Paper

Improved pulse laser ranging algorithm based on high speed sampling
Author(s): Xuan-yi Gao; Rui-hai Qian; Yan-mei Zhang; Huan Li; Hai-chao Guo; Shi-jie He; Xiao-kang Guo
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Paper Abstract

Narrow pulse laser ranging achieves long-range target detection using laser pulse with low divergent beams. Pulse laser ranging is widely used in military, industrial, civil, engineering and transportation field. In this paper, an improved narrow pulse laser ranging algorithm is studied based on the high speed sampling. Firstly, theoretical simulation models have been built and analyzed including the laser emission and pulse laser ranging algorithm. An improved pulse ranging algorithm is developed. This new algorithm combines the matched filter algorithm and the constant fraction discrimination (CFD) algorithm. After the algorithm simulation, a laser ranging hardware system is set up to implement the improved algorithm. The laser ranging hardware system includes a laser diode, a laser detector and a high sample rate data logging circuit. Subsequently, using Verilog HDL language, the improved algorithm is implemented in the FPGA chip based on fusion of the matched filter algorithm and the CFD algorithm. Finally, the laser ranging experiment is carried out to test the improved algorithm ranging performance comparing to the matched filter algorithm and the CFD algorithm using the laser ranging hardware system. The test analysis result demonstrates that the laser ranging hardware system realized the high speed processing and high speed sampling data transmission. The algorithm analysis result presents that the improved algorithm achieves 0.3m distance ranging precision. The improved algorithm analysis result meets the expected effect, which is consistent with the theoretical simulation.

Paper Details

Date Published: 19 October 2016
PDF: 6 pages
Proc. SPIE 10153, Advanced Laser Manufacturing Technology, 1015316 (19 October 2016); doi: 10.1117/12.2247342
Show Author Affiliations
Xuan-yi Gao, Beijing Institute of Technology (China)
Rui-hai Qian, China North Industries Corp. (China)
Yan-mei Zhang, Beijing Institute of Technology (China)
Huan Li, Beijing Institute of Technology (China)
Hai-chao Guo, Beijing Institute of Technology (China)
Science and Technology on Space Microwave Lab. (China)
Shi-jie He, Beijing Institute of Technology (China)
Xiao-kang Guo, Beijing Institute of Technology (China)

Published in SPIE Proceedings Vol. 10153:
Advanced Laser Manufacturing Technology
Bingheng Lu; Huaming Wang, Editor(s)

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