大气与环境光学学报 ›› 2025, Vol. 20 ›› Issue (3): 312-324.doi: 10.3969/j.issn.1673-6141.2025.03.006

• “激光雷达新技术及其在大气环境中的应用”专辑 • 上一篇    

不同云雾和降水条件下相干多普勒测风激光雷达探测性能分析

孙灿 1, 王豫 2, 刘晓英 1*, 张洪玮 1, 戴光耀 1, 张芯瑜 1, 王琪超 3, 周伟 3, 吴松华 1,4,5   

  1. 1 中国海洋大学信息科学与工程学部海洋技术学院, 山东 青岛 266100; 2 中国气象局乌鲁木齐沙漠气象研究所, 新疆 乌鲁木齐 830002; 3 青岛镭测创芯科技有限公司, 山东 青岛 266000; 4 中国海洋大学海洋高等研究院, 山东 青岛 266100; 5 崂山实验室, 区域海洋动力学与数值模拟功能实验室, 山东 青岛 266237
  • 收稿日期:2025-01-23 修回日期:2025-04-01 出版日期:2025-05-28 发布日期:2025-05-26
  • 通讯作者: E-mail: lxy6302@stu.ouc.edu.cn E-mail:xiaoyingliu@ouc.edu.cn
  • 作者简介:孙灿 (2000- ), 女, 山东济宁人, 硕士研究生, 主要从事相干多普勒激光雷达风场反演算法方面的研究。E-mail: 18704010305@163.com
  • 基金资助:
    中国博士后科学基金特别资助 (2024T170867), 山东省重点研发计划 (2023CXGC010408)

Performance analysis of coherent Doppler wind lidar detection under different cloud and precipitation conditions

SUN Can 1, WANG Yu 2, LIU Xiaoying 1*, ZHANG Hongwei 1, DAI Guangyao 1, ZHANG Xinyu 1, WANG Qichao 3, ZHOU Wei 3, Wu Songhua 1,4,5   

  1. 1 College of Marine Technology, Faculty of Information Science and Engineering, Ocean University of China, Qingdao 266100, China; 2 China Meteorological Administration Urumqi Desert Meteorological Research Institute, Urumqi 830002, China; 3 Qingdao Leicent Co. Ltd., Qingdao 266000, China; 4 Institute for Advanced Ocean Study, Ocean University of China, Qingdao 266100, China; 5 Laboratory for Regional Oceanography and Numerical Modeling, Laoshan Laboratory, Qingdao 266237, China
  • Received:2025-01-23 Revised:2025-04-01 Online:2025-05-28 Published:2025-05-26

摘要: 探究不同气象条件下相干多普勒测风激光雷达 (CDWL) 的探测性能对于航空气象设备组网观测具有重要意 义。本研究利用布放在广州白云国际机场的相干多普勒激光雷达, 结合航空例行天气报告和美国国家环境信息中心 气象数据, 分析了云量、逐日累计降水量对相干多普勒激光雷达有效探测距离及信噪比的影响, 并通过典型观测案例 进一步探究了能见度、降水天气现象对激光雷达探测性能的动态影响。实验结果表明, 在非降水条件下, 随着云量的 增加和能见度的降低, CDWL有效探测距离和信噪比均呈下降趋势;案例分析表明, 当能见度小于3 km时, CDWL有 效探测距离出现大幅度下降, 探测距离仅为2~4 km。在降水条件下, 降水的强度和时空分布特征会影响CDWL的探 测性能;案例分析表明, 降水强度较弱的情况下, 阵性降水对CDWL探测性能的抑制比雷暴条件下更加明显, 即使在 大暴雨条件下, CDWL仍可维持2 km的探测范围。

关键词: 相干多普勒激光雷达, 探测性能, 探测距离, 信噪比

Abstract: Exploring the detection performance of coherent Doppler wind lidar (CDWL) under different meteorological conditions is of great significance for the network observation of aviation meteorological equipment. Using the CDWL deployed at Guangzhou Baiyun International Airport, combined with aviation routine weather reports and meteorological data from the National Centers for Environmental Information of the United States, this study analyzed the effects of different cloud cover and daily cumulative precipitation on the effective detection range and signal-to-noise ratio of the CDWL, and further explored the dynamic impacts of visibility and precipitation weather phenomena on the detection performance of CDWL through typical observation cases. The experimental results show that under non precipitation conditions, the effective detection distance and signal-to-noise ratio of CDWL show a decreasing trend with the increase of cloud cover and the decrease of visibility, and the case analysis shows that, when the visibility is less than 3 km, the effective detection range of CDWL decreases significantly, with a detection range of only 2–4 km. While under precipitation conditions, the intensity and spatiotemporal distribution characteristics of precipitation will affect the detection performance of CDWL, and the case analysis shows that under weak precipitation intensity, the suppression of intermittent precipitation on CDWL detection performance is more significant than that under thunderstorm conditions, and even under heavy rainstorm conditions, CDWL can still maintain a detection range of 2 km.

Key words: coherent Doppler lidar, detection performance, detection distance, signal-to-noise ratio

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