量子电子学报 ›› 2024, Vol. 41 ›› Issue (5): 802-812.doi: 10.3969/j.issn.1007-5461.2024.05.010

• 激光应用 • 上一篇    下一篇

海水表层叶绿素 a 及悬移质浓度的激光雷达初步探测实验研究

徐 杰, 王章军*, 陈 超, 庄全风, 吴家胜, 郭甜甜   

  1. 1. 齐鲁工业大学(山东省科学院),山东省科学院海洋仪器仪表研究所
    2. 山东山科神光科技有限公司
  • 收稿日期:2023-01-16 修回日期:2023-03-13 出版日期:2024-09-28 发布日期:2024-09-28
  • 通讯作者: E-mail: zhangjunwang@qlu.edu.cn E-mail: E-mail: zhangjunwang@qlu.edu.cn
  • 作者简介:徐 杰 ( 1997 - ), 山东青岛人, 研究生, 主要从事海洋激光雷达方面的研究。 E-mail: 17854119516@163.com
  • 基金资助:
    国家重点研发计划 (2022YFC2807202, 2022YFC2807702), 山东省重点研发计划 (2022CXPT020, 2020CXGC010104, 2022JMRH0102), 山东省自然科学基金 (ZR202110060024, ZR2022MD068)

Preliminary experimental study on lidar detection of chlorophyll-a and suspended matter concentration in seawater surface

XU Jie, WANG Zhangjun*, CHEN Chao, ZHUANG Quanfeng, WU Jiasheng, GUO Tiantian   

  • Received:2023-01-16 Revised:2023-03-13 Published:2024-09-28 Online:2024-09-28

摘要: 针对海洋叶绿素a和悬移质浓度的测量,研发了一套小型化的双视场四通道海洋探测激光雷达系统。基于该系统,在实验室进行了不同激发能量和激光入射角下的叶绿素a浓度的测量实验,并与叶绿素荧光计/浊度计进行了对比,结果表明,不同激发能量和不同激光入射角度测量的叶绿素a浓度值均趋于一致,且与叶绿素荧光计/浊度计测量结果的相关系数可达0.94。然后对不同粒径的悬移质浓度进行了测量实验,并与叶绿素荧光计/浊度计的测量结果进行了对比,二者相关系数在0.91以上。最后,利用海洋激光雷达对近岸海水中的叶绿素a和悬移质浓度进行了反演与比对,与叶绿素荧光计/浊度计测得的海水表层叶绿素a和悬移质浓度的相关性分别达到0.74和0.86。

关键词:  激光技术, 海洋激光雷达, 激光遥感, 叶绿素a浓度, 悬移质浓度

Abstract: A dual-field-of-view oceanic lidar system was designed and developed to meet the actual demand of on line monitoring of seawater surface parameters such as chlorophyll-a and suspended matter concentrations. Firstly, the measurement experiment of chlorophyll-a concentration was carried out in the laboratory using an experimental tank. It was shown that the correlation coefficient between the results measured by the developed system and those of chlorophyll fluorimeter/nephelometer was 0.94, and the chlorophyll-a concentrations measured under different laser excitation energies were also consistent with those of chlorophyll fluorometer/nephelometer. Meanwhile, the calibration experiments were also carried out on the concentration of suspended matter with different particle sizes, and the corresponding correlation coefficient between the results measured by the developed system and those of the chlorophyll fluorometer/nephelometer was better than 0.91. Then, by using the developed oceanic lidar, the concentration of chlorophyll-a and suspended matter in the seawater surface off the coast of Qingdao were measured on-site, and the correlation coefficients between the results of the lidar system and of the chlorophyll fluorometer/nephelometer were 0.74 and 0.86, respectively, preliminarily verifying the feasibility of applying the self-developed oceanic lidar for detecting the concentration of chlorophyll-a and suspended matter in seawater surface.

Key words: laser techniques, oceanic lidar, laser remote sensing, chlorophyll-a concentration, suspended matter concentration

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