大气激光雷达光电转换单元及其自检系统

大气激光雷达光电转换单元及其自检系统 The Photoelectric Conversion Subsystem and Self-Diagnosing Subsystem of Rayleigh Backscatter and Sodium Resnance Lidar 陈曦 CHEN Xi 1 2 first-author 毛斐 MAO Fei 1 2 曾海坚 ZENG Hai-jian 1 2 易帆 YI Fan 1 2 武汉大学电子信息学院 武汉大学电子信息学院 School of Electronic Information, Wuhan University School of Electronic Information, Wuhan University 武汉大学电子信息学院,湖北,武汉,430072 武汉大学电子信息学院,湖北,武汉,430072 基于双波长激光雷达的光电转换单元及其核心部件光电倍增管（PMT）的基本原理,对使光电倍增管工作的分压电路进行了剖析和改造,完成了激光雷达原始回波从光信号到电信号的转换.设计并实现了激光雷达光电转换自检系统,模拟了大气回波光子计数信号并产生相关控制信号,成功地解决了激光雷达信号处理部分调试困难的问题. Basic principle of the photoelectric conversion subsystem as well as application of Photo Multiplier Tube of Wuhan University Rayleigh Backscatter and Sodium Resonance Fluorescence LIDAR （Light detecting and ranging） is introduced. In order to put the PMT in proper working condition, its voltage-divider network inside the socket is analyzed and modification are made. In addition, design and implememtation of a self-diagnosis system for the photoelectric conversion system are reported, the simulation of Lidar photo backscatter signal and production of related control signal are interpreted in detail. 激光雷达 光电倍增管 光子计数 LIDAR photo multiplier tube photo counting P412.25 国家自然科学基金资助项目（40174044） 2002-03-01 2021-04-01 3