大气与环境光学学报 ›› 2025, Vol. 20 ›› Issue (3): 399-409.doi: 10.3969/j.issn.1673-6141.2025.03.012

• “激光雷达新技术及其在大气环境中的应用”专辑 • 上一篇    下一篇

用于荧光激光雷达系统参数优化的测试平台设计

唐磊 1,2, 张义军 1*, 伯广宇 2, 杨喆 2, 张战盈 2, 余东升 2, 王瑞 2,3, 陈海燕 2, 徐赤东 2, 朱军 4   

  1. 1 安徽大学, 安徽 合肥 230601; 2 中国科学院合肥物质科学研究院安徽光学精密机械研究所光电探测研究室, 安徽 合肥 230031; 3 中国科学技术大学, 安徽 合肥 230026; 4 航天东方红卫星有限公司, 北京 100094
  • 收稿日期:2024-10-24 修回日期:2024-12-26 出版日期:2025-05-28 发布日期:2025-05-26
  • 通讯作者: E-mail: yijun@mail.ustc.edu.cn E-mail:yijun@mail.ustc.edu.cn
  • 作者简介:唐磊 (1999- ), 江苏宿迁人, 硕士研究生, 主要从事激光雷达及其应用方面的研究。E-mail: tenle125@163.com
  • 基金资助:
    民用航天预研项目 (D010206)

Test platform design for parameter optimisation of fluorescent lidar system

TANG Lei 1,2, ZHANG Yijun 1*, BO Guangyu 2, YANG Zhe 2, ZHANG Zhanying 2, YU Dongsheng 2, WANG Rui 2,3, CHEN Haiyan 2, XU Chidong 2, ZHU Jun 4   

  1. 1 Anhui University, Hefei 230601, China; 2 Department of Photoelectric Detection, Anhui Institute Of Optics and Fine Mechanics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China; 3 University of Science and Technology of China, Hefei 230026, China; 4 DFH Satellite Co. Ltd., Beijing 100094, China
  • Received:2024-10-24 Revised:2024-12-26 Online:2025-05-28 Published:2025-05-26
  • Contact: Yi-Jun ZHANG E-mail:yijun@mail.ustc.edu.cn

摘要: 生物气溶胶对于公共安全有着重大危害, 荧光激光雷达是远程遥感获取生物气溶胶信息的有力工具。为了 解决荧光激光雷达研制过程中关键系统参数的优化设计问题, 本工作设计并搭建了一套用于荧光信号探测的测试平 台。该平台采用发射能量可调的紫外激光器作为激励光源, 用于测试激发能量对探测能力的影响; 接收光路采用中 心波长大范围可调的光栅单色仪进行荧光信号提取, 用于优化生物气溶胶的荧光探测中心波长; 同时荧光信号接收 带宽可调, 用于优化激光雷达的工作光学带宽; 光电信号检测单元采用光子计数模式, 用于微弱的激光雷达信号探 测。实验结果表明, 该平台激光发射能量、荧光接收波段、光学带宽都灵活可调, 可通过调整这些关键参数实现激光 雷达探测性能的优化, 有利于生物气溶胶荧光光谱及荧光峰值特征的研究。该平台的搭建可以为荧光激光雷达系统 设计和生物气溶胶荧光光谱实验研究提供指导。

关键词: 激光雷达, 生物气溶胶, 测试平台, 系统参数优化设计

Abstract: Bioaerosols are a major hazard to public safety, and fluorescence lidar is a powerful tool for remote sensing to obtain bioaerosol information. In order to solve the problem of optimising the design of key system parameters in the development of fluorescence lidar, a test platform for fluorescence signal detection is designed and constructed in this work. In the platform, a UV laser with adjustable emission energy is adopted as excitation light source to test the effect of excitation energy on the detection capability, a grating monochromator with a wide range of adjustable central wavelength is used in the receiving optical path for fluorescence signal extraction, which is convinent to optimize the central wavelength of fluorescence detection for bioaerosols. At the same time, the bandwidth of the fluorescence signal reception for the platform is adjustable, which is used to optimize the optical bandwidth of the lidar, and the optoelectronic signal detection unit adopts photon counting mode for weak lidar signal detection. The experimental results show that, the laser emission energy, fluorescence receiving wavelength, and optical bandwidth the platform are flexibly adjustable, and and the detection performance of lidar can be optimized by adjusting these key parmeters, which is conducive to the study of the fluorescence spectra and fluorescence peak characteristics of bioaerosols. The platform can provide guidance for the design of fluorescence lidar system and the experimental study of fluorescence spectroscopy of bioaerosols.

Key words: lidar, bioaerosols, test platforms, optimisation of system parameters

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