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光电倍增管后脉冲特性的标定与校正
引用本文:王媛,程小劲. 光电倍增管后脉冲特性的标定与校正[J]. 激光技术, 2021, 45(5): 607-613. DOI: 10.7510/jgjs.issn.1001-3806.2021.05.012
作者姓名:王媛  程小劲
作者单位:上海工程技术大学 机械与汽车工程学院,上海201620
摘    要:为了能够准确地反映出激光雷达接收的光信号,需要对其使用的光电倍增管的后脉冲特性进行校正和标定.采用后脉冲概率分布函数分别对波长为486nm和532nm的机载海洋激光雷达测深数据进行理论分析和实验验证,并将校正结果与蒙特卡洛仿真模拟得到的数据进行比较.结果表明,利用后脉冲概率分布函数校正后的数据与蒙特卡洛仿真模拟得到的数...

关 键 词:探测器  后脉冲校正  后脉冲概率分布  光电倍增管
收稿时间:2020-10-19

Calibration and correction of afterpulse characteristics of a photomultiplier tube
Abstract:In order to accurately reflect the optical signals received by the lidar, it is necessary to correct and calibrate the afterpulse characteristics of the photomultiplier tube. The probability distribution function of the afterpulse was used to analyse and verify the sounding data of the airborne marine lidar with wavelength of 486nm and 532nm, respectively, and the corrected results were compared with the data obtained by Monte Carlo simulation. The results show that the correlation between the calibration data and the Monte Carlo simulation data is as high as 0.9689(486nm) and 0.8648(532nm), respectively. About 98m(486nm) and 33m(532nm) false signals are eliminated based on the corrected data compared with the data before, and the accuracy of measurement of the airborne marine lidar is improved effectively. This research is helpful for the measurement of ocean depth and the study of submarine geomorphy.
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