Analysis of interference suppression in single photon lidar

Yicheng Wang; Zechen Zhang; Huifeng Tao; Xinyuan Zhang

doi:10.1117/12.3016554

1 February 2024 Analysis of interference suppression in single photon lidar

Yicheng Wang, Zechen Zhang, Huifeng Tao, Xinyuan Zhang

Proceedings Volume 13068, Fifth International Conference on Optoelectronic Science and Materials (ICOSM 2023); 130681Z (2024) https://doi.org/10.1117/12.3016554
Event: Fifth International Conference on Optoelectronic Science and Materials (ICOSM 2023), 2023, Hefei, China

Abstract

LiDAR has become a key technology for autonomous driving. However, with the popularization of LiDAR, the laser signals emitted by multiple LiDAR at the same time in road environment will cause mutual interference, also known as crosstalk. Overcoming crosstalk has been a challenge that must be faced. Firstly, this paper analyzes the photon arrival time histogram characteristics of Time-Correlated Single Photon Counting LiDAR in the case of crosstalk. Then, the basic principle of interference suppression methods based on Pseudo-Random Pulse Position Modulation is introduced. Finally, we use interference suppression ratios to analyze the interference suppression effectiveness under different cumulative cycles and different random dynamic ranges. The simulation results show that when the laser repetition rates of the two LiDAR are the same, the larger the cumulative cycle number, the greater the interference suppression ratio; With the same cumulative number of cycles, the larger the random dynamic range of pulse position modulation, the greater the interference suppression ratio.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Yicheng Wang, Zechen Zhang, Huifeng Tao, and Xinyuan Zhang "Analysis of interference suppression in single photon lidar", Proc. SPIE 13068, Fifth International Conference on Optoelectronic Science and Materials (ICOSM 2023), 130681Z (1 February 2024); https://doi.org/10.1117/12.3016554

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