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悬浮泥沙浓度遥感反演模型研究
张 芸1, 张 鹰1, 王晶晶2
1.江苏省环境演变与生态建设重点实验室;2.南京大学国际地球系统科学研究所
摘要:
对实验室固定粒径的悬浮泥沙水体的反射率光谱特征进行了分析，选取反射率的敏感波段，建立了遥感反射率和悬浮泥沙浓度的遥感反演模型；同时，又利用野外现场实测的光谱反射率和悬浮泥沙中值粒径，建立受粒径影响的悬浮泥沙浓度反演模型。结果表明，主成分模型的反演效果最好，其次是幂指数模型，而线性模型的反演效果较差。
关键词:  泥沙浓度  反射率  遥感模型
DOI：
分类号:
基金项目:国家自然科学基金重点项目（50339010）；国家“211工程”建设项目
Analysis on the sensing model of suspended sediment concentrations
Abstract:
The characteristics of reflected spectrum of suspended sediments in laboratory with a given size are analyzed, optimal wavelengths of spectrum reflectance are selected and the quantitative sensing model for reflectivity and SSC is established. Including the field measured reflectance and the median diameter (D50) of sediments, a quantitative remote sensing model for the prediction of SSC is established. The result suggests that the principle component model shows the best precision and the power model is much better than the linear model.
Key words:  suspended sediment concentration (SSC)  reflectance  sensing model
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