典型内陆水体有色可溶性有机物遥感反演-测绘工程专业论文.docxVIP

万方数据 万方数据 面光谱数据的经验反演模型，反演结果的平均相对误差分别为 12.1%和 18.8%，均方根 误差 RMSE 分别为 0.157 m-1 和 0.192 m-1。 （3）分别按季节、研究区和 V4、V5 类，分别逐波段分析了遥感反射率和 CDOM 的相关性，并建立了相应的单波段 CDOM 反演经验模型。结果显示，单个研究区春季 和冬季的模型表现最好。夏季和秋季由于受浮游植物的干扰，反演效果不理想。综合了 不同研究区和不同季节的数据的反演模型效果不理想。由于水体区域性、季节性的差异 影响，用单一波段建立模型反演 CDOM 是很困难的。 （4）将分类反演的半解析方法和分类建立的基于波段比值的经验反演模型，应用 于官厅水库 CHRIS 和太湖 MERIS 高光谱数据的 CDOM 反演。官厅水库没有同步实测 数据进行反演精度评定，仅对比了半解析方法和经验方法反演的结果，两种方法的反演 结果分布规律统一。太湖有 75 个准同步点，用于精度检验，检验结果显示，反演结果 精度尚可。太湖五次实验覆盖了春夏秋冬四个季节，其中春、冬两个季节反演结果较好， 夏、秋两个季节反演结果精度仍有待提升。 关 键 词：有色可溶性有机物，CDOM，官厅水库，太湖，高光谱遥感，经验方法，半 解析方法 研究类型：应用研究 Subject : Remote Sensing Inversion Chromophoric Dissolved Organic Matter in Typical Inland Water Specialty : Surveying and mapping engineering Name ： Zhou Yaming (Signature) Instructor : Li Chonggui (Signature) Li Junsheng (Signature) ABSTRACT Chromophoric Dissolved Organic Matter(CDOM),also called yellow substance,is a kind of dissolved organic matter widely distributed in natural waters.CDOM together with suspended solids and phytoplankton are all the main objects of ocean color remote sensing study. The application of remote sensing technology promoted the research of water optical properties changes in large scale of time and space range.Compared with suspended solids and phytoplankton,the studies of CDOM inversion is relatively small.And the optical properties of sea waters are more simpler,and often chosen as the research areas. Conversely,the studies in Coastal and inland waters are relatively small amount.This article select Guanting Reservoir and taihu lake,two typical inland waters as the research areas,take the absorption coefficient of CDOM as concentration index. In this paper, the main innovation points are as follows: Combining QAA_V4, QAA_V5 ，two improved version of QAA and QAA-CDOM, this paper proposed two innovative methods, QAA(V4)-CDOM and QAA(V5)-CDOM, used in remote sensing inversion of CDOM. This paper divided water surface spectral data of taihu lake and guanting reservoir into two kind