光学学报, 2009, 29 (1): 102, 网络出版: 2009-02-10   

海洋高光谱辐射实时观测系统的研制

Development of Real-Time Hyperspectral Radiation Sea-Observation System
作者单位
1 中国科学院南海海洋研究所热带海洋环境动力学重点实验室, 广东 广州 510301
2 中国科学院研究生院, 北京 100039
摘要
研制了海洋水色高光谱辐射实时观测系统。该系统主要包括用于现场测量海面与海水近表层上行辐亮度和下行辐照度的高光谱光纤辐射计, 装载高光谱光纤辐射计及其它辅助设施的海上观测平台, 数据采集、实时通讯的控制系统。采用6通道光纤光谱仪解决了多参数测量同步性问题, 通过自动调整光谱仪CCD积分时间提高其测量的动态范围; 采用光纤光谱仪减小了光接收器的体积, 减小了自阴影效应的影响; 采用防污染装置解决了光学探头水下防污染问题。对系统的性能进行了室内测试及近海36 d试验。结果表明,光学系统零漂误差小于±5%, 光学系统稳定可靠; 浮标性能可很好地满足水下光辐射测量对浮标体姿态和稳定性的要求; 控制系统的数据采集和通讯可靠有效。
Abstract
A hyperspectral system for real-time observation of ocean color is developed. The system includes three main units: an optical-fiber-based hyperspectroradiometer for in situ measurements of upwelling radiance and downwelling irradiance both at sea surface and at underwater depths, a moored buoy platform suitable for loading the hyperspectroradiometers and other auxiliary sensors, and an electrionic system for data acquisition and real time data communication. A six-channel optical fiber spectroradiometer is designed, which can simultaneously measure parameters at different depths. The large dynamic range of the spectroradiometer is achieved by auto-adjusting the integration time of CCD array detector. The use of optical fiber makes it possible to minimize the collector of sensor, and thus the instrument self-shading effect is reduced. An auto-driving mechanical brush is designed for optical sensor, which prevents the sensors from bio-fouling and enables the sensors to work well underwater. The characteristics of the system were tested in laboratory, and the buoy was deployed in near-shore waters for 36 days in situ experimental testing. Experimental results show that, the errors for the optical parameters are within ±5%, and the buoy has a good stability at high sea state conditions, and the data acquisition and electronic communication system is reliable and effective.

杨跃忠, 曹文熙, 孙兆华, 王桂芬. 海洋高光谱辐射实时观测系统的研制[J]. 光学学报, 2009, 29(1): 102. Yang Yuezhong, Cao Wenxi, Sun Zhaohua, Wang Guifen. Development of Real-Time Hyperspectral Radiation Sea-Observation System[J]. Acta Optica Sinica, 2009, 29(1): 102.

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