激光与光电子学进展, 2012, 49 (5): 051401, 网络出版: 2012-03-17
非扫描激光雷达系统的多脉冲积累信噪比分析 
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SNR Analysis under Multi Pulse Accumulation of Non-Scanning Lidar System
激光技术 激光雷达 信噪比 多脉冲积累 雪崩光电二极管阵列 laser technique lidar signal-to-noise ratio multi-pulse accumulation Avalanche Photodiode arrays
摘要
激光雷达系统信噪比(SNR)直接影响了系统距离像和强度像的好坏。运用信号相关检测理论，分析了多脉冲积累下的非扫描激光雷达系统信噪比。考虑到雪崩光电二极管（APD）阵列、工作环境因素和激光雷达系统参数等，对多脉冲积累下的信噪比进行了仿真分析。在100个脉冲积累数目下，信噪比提高了9.35 dB，之后随脉冲积累数目的继续增加，信噪比提高的幅度不明显。研究表明：运用脉冲积累这一方法能够提高系统信噪比。
Abstract
Signal-to-noise ratio (SNR) of lidar system affects directly the quality of the range image and intensity image. Using the theory of signal correlation detection, SNR of non-scanning lidar system is analysed under multi-pulse-accumulation condition. Simulation and analysis of SNR are conducted under considering APD arrays, work environment factors, lidar system parameters. SNR is improved by 9.35 dB under 100 pulses accumulation, and the sequential improvement is not obvious with increase of pulse accumulation. It is shown that SNR of lidar system can be improved by using pulse-accumulation method.
高峰, 杨进华, 姜成昊, 朱彦. 非扫描激光雷达系统的多脉冲积累信噪比分析[J]. 激光与光电子学进展, 2012, 49(5): 051401. Gao Feng, Yang Jinhua, Jiang Chenghao, Zhu Yan. SNR Analysis under Multi Pulse Accumulation of Non-Scanning Lidar System[J]. Laser & Optoelectronics Progress, 2012, 49(5): 051401.
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