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  

Preliminary experiment of lidar detection of chlorophyll‐a and suspended matter concentration in seawater surface

作　　者：徐杰 王章军 陈超 庄全风 吴家胜 郭甜甜 XU Jie;WANG Zhangjun;CHEN Chao;ZHUANG Quanfeng;WU Jiasheng;GUO Tiantian(Institute of Oceanographic Instrumentation,Qilu University of Technology(Shandong Academy of Sciences),Qingdao 266100,China)

机构地区：[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,山东青岛266100

出　　处：《量子电子学报》2024年第5期802-812,共11页Chinese Journal of Quantum Electronics

基　　金：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)。

摘　　要：针对海水表层叶绿素a和悬移质浓度在线监测的实际需求,设计并研发了一套双视场海洋激光雷达系统。首先利用实验水槽,在实验室开展了叶绿素a浓度测量实验,其结果与叶绿素荧光计/浊度计测量结果的相关系数为0.94,且不同激光发射能量下测量的叶绿素a的浓度值与叶绿素荧光计/浊度计的结果也趋于一致;同时对不同粒径的悬移质浓度进行了测量,其结果与叶绿素荧光计/浊度计测量结果的相关系数优于0.91。进而利用海洋激光雷达对青岛近海海水表层叶绿素a和悬移质浓度进行了现场观测,其测量结果与叶绿素荧光计/浊度计测量结果的相关系数分别为0.74和0.86,初步验证了自研海洋激光雷达应用于海水表层叶绿素a与悬移质浓度探测上的可行性。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.

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 

分 类 号：TN958[电子电信—信号与信息处理]