大气探测激光雷达发射能量监测

杜洋; 华灯鑫; 辛文辉; 何廷尧; 崔岩; 普亚洲

doi:doi:10.3969/j.issn.1007-5461. 2018.02.013

量子电子学报, 2018, 35 (2): 209, 网络出版: 2018-04-23

大气探测激光雷达发射能量监测

Emission energy monitoring of atmospheric detection lidar

论文大纲

杜洋 ^*华灯鑫辛文辉何廷尧崔岩普亚洲

作者单位

西安理工大学机械与精密仪器工程学院, 陕西西安 710048

遥感脉冲能量峰值保持电路激光雷达数据修正 remote sensing pulse energy peak holding circuit lidar data correction index propagation length

摘要

出射激光脉冲能量变化对激光雷达的测量数据有很大影响,需对其进行实时、准确测量。针对激光雷达出射激光脉宽窄、不易实现高频电路采集的问题,设计了一个基于峰值采样保持电路的脉冲能量监测系统。对脉宽为10 ns、重复频率分别为20、60、100 Hz的模拟脉冲进行了实时监测,结果表明该系统能很好地检测激光出射能量,没有脉冲遗漏现象。在激光雷达观测实验中,该监测系统输出的电压值与实测激光脉冲能量有较好的线性关系,为激光雷达数据反演提供了修正依据。

Abstract

Variation of output laser pulse energy has great influence on the measured data of radar, so the output laser pulse energy must be measured accurately in real-time. Aiming at the problem that output laser pulse width is very narrow, and it is difficult to achieve high frequency acquisition circuit, a pulse energy monitoring system is designed based on the peak sampling and holding circuit. In situ monitoring of simulated pulses with pulse width of about 10 ns and repetition rates of 20, 60, 100 Hz is carried out. Results show that the system can accurately detect laser emitting energy without any pulse missing. There is a good linear relationship between the system output voltage and measured laser pulse energy in lidar observation experiments, which provides a correction basis for lidar data inversion.

参考文献

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杜洋, 华灯鑫, 辛文辉, 何廷尧, 崔岩, 普亚洲. 大气探测激光雷达发射能量监测[J]. 量子电子学报, 2018, 35(2): 209. DU Yang, HUA Dengxin, XIN Wenhui, HE Tingyao, CUI Yan, PU Yazhou. Emission energy monitoring of atmospheric detection lidar[J]. Chinese Journal of Quantum Electronics, 2018, 35(2): 209.

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