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Experimental Research on Quantitative Inversion Models of Suspended Sediment Concentration Using Remote Sensing Technology

查看全文 作　　者：Wang Yanjiao [1][ 2]; Yan Feng [3 ]&Email:njufy@163.com; Zhang Peiqun [1] ; Dong Wenjie [1] 高影响力作者 机构地区：[1] Laboratory for Climate Studies of China Meteorological Administration, National Climate Center, Beijing, 100081, China ;[2] Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China ;[3] College of Resources Science & Technology, Beijing Normal University, Beijing, 100875, China高影响力机构 出　　处：《Chinese Geographical Science》索引2007年第17卷第3期,共7页高影响力期刊 基　　金：Under the auspices of the Key Program of National Natural Science Foundation of China(No.50339010);Huaihe Valley Open Fund Projects(No.Hx2007) 摘　　要：Research on quantitative models of suspended sediment concentration(SSC)using remote sensing technology is very important to understand the scouring and siltation variation in harbors and water channels.Based on laboratory study of the relationship between different suspended sediment concentrations and reflectance spectra measured synchronously,quantitative inversion models of SSC based on single factor,band ratio and sediment parameter were developed,which provides an effective method to retrieve the SSC from satellite images.Results show that the b1(430-500nm)and b3(670-735nm)are the optimal wavelengths for the estimation of lower SSC and the b4(780-835nm)is the optimal wavelength to estimate the higher SSC.Furthermore the band ratio B2/B3 can be used to simulate the variation of lower SSC better and the B4/B1 to estimate the higher SSC accurately.Also the inversion models developed by sediment parameters of higher and lower SSCs can get a relatively higher accuracy than the sin-gle factor and band ratio models. 关 键 词：悬浮沉淀物浓缩 光谱反射 反转模式 遥感系统
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