Research and realization on performance of single photon counting ranging system optimizing

Shanshan, 沈姗姗 Shen; Chen, Qian; Weiji, 何伟基 He; Ping, 周平 Zhou; Guohua, 顾国华 Gu

doi:10.3788/irla201645.0217001

Cited by 2 publications

(1 citation statement)

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“…In practical application scenarios, the issue of crosstalk between different vehicles must be considered. As shown in Figure 1, vehicle A emits a laser beam during operation, and the received signal not only includes the echo of pulse A, but also includes the same waveform signal emitted by vehicle B, which can cause interference to A's LiDAR [6] .…”

Section: Analysis Of Tcspc Lidar Crosstalkmentioning

confidence: 99%

Analysis of interference suppression in single photon lidar

Wang,

Zhang,

Tao

et al. 2024

Fifth International Conference on Optoelectronic Science and Materials (ICOSM 2023)

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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.

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Section: Analysis Of Tcspc Lidar Crosstalkmentioning

confidence: 99%