Design and daytime performance of laser-induced fluorescence spectrum lidar for simultaneous detection of multiple components, dissolved organic matter, phycocyanin, and chlorophyll in river water
Design and daytime performance of laser-induced fluorescence spectrum lidar for simultaneous detection of multiple components, dissolved organic matter, phycocyanin, and chlorophyll in river water
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DOI：
10.1364/ao.55.006727
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发表时间：
2016-08-20
期刊：
影响因子：
1.9
通讯作者：
Park, Ho-Dong
中科院分区：
文献类型：
--
作者：
Saito, Yasunori;Kakuda, Kei;Park, Ho-Dong
在这项工作中，我们开发了移动的激光诱导荧光光谱（LIFS）激光雷达的基础上的激发发射矩阵的水样和减少太阳背景光的方法，使用同步检测技术的初步实验。用于荧光激发的UV短脉冲激光（355 nm，6 ns）与使用选通图像增强的多通道CCD的荧光的10-100 ns短时间同步检测的组合使得LIFS激光雷达即使在白天也可以操作。采用这种结构的LIFS激光雷达展示了在天龙川/Suwa湖进行天然河流/湖泊水质监测的潜力。三个主要组成部分的荧光数据的水，溶解有机物，藻蓝蛋白和叶绿素，提取光谱分析使用这些组件的标准光谱功能。通过调整实验校准数据估计其浓度。从2010年到2012年，使用我们的LIFS激光雷达进行长期实地观测的结果表明，同时进行多组分检测对于了解自然水环境是必要的。(C)2016美国光学学会
In this work, we developed mobile laser-induced fluorescence spectrum (LIFS) lidar based on preliminary experiments on the excitation emission matrix of a water sample and a method for reducing solar background light using the synchronous detection technique. The combination of a UV short-pulse laser (355 nm, 6 ns) for fluorescence excitation with a 10-100 ns short-time synchronous detection using a gated image-intensified multi-channel CCD of the fluorescence made the LIFS lidar operation possible even in daytime. The LIFS lidar with this construction demonstrated the potential of natural river/lake water quality monitoring at the Tenryu River/Lake Suwa. Three main components in the fluorescence data of the water, dissolved organic matter, phycocyanin, and chlorophyll, were extracted by spectral analysis using the standard spectral functions of these components. Their concentrations were estimated by adapting experimentally calibrated data. Results of long-term field observations using our LIFS lidar from 2010 to 2012 show the necessity of simultaneous multi-component detection to understand the natural water environment. (C) 2016 Optical Society of America