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Sci Rep. 2018 Mar 8;8(1):4198. doi: 10.1038/s41598-018-22675-1.

High-speed photon-counting laser ranging for broad range of distances.

Du B1, Pang C1, Wu D1, Li Z1, Peng H2, Tao Y2, Wu E1, Wu G3,4.

Author information

1
State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai, 200062, China.
2
Beijing Institute of Space Mechanics & Electricity, Beijing, 100091, China.
3
State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai, 200062, China. gwu@phy.ecnu.edu.cn.
4
Collaborative Innovation Centre of Extreme Optics, Shanxi University, Taiyuan, 030006, China. gwu@phy.ecnu.edu.cn.

Abstract

We demonstrate a high-speed photon-counting laser ranging system with laser pulses of multiple repetition rates to extend the unambiguous range. In the experiment, the laser pulses of three different repetition rates around 10 MHz were employed to enlarge the maximum unambiguous range from 15 m to 165 km. Moreover, the range of distances was increased as well, enabling the measurement on different targets of large separation distance with high depth resolution. An outdoor photon-counting laser ranging up to 21 km was realized with high repetition rate, which is beneficial for the airborne and satellite-based topographic mapping.

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