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高浓度悬浮泥沙遥感是我国特殊研究课题之一.国外在此领域的工作主要是对低浓度悬浮泥沙的研究.目前国内大量使用美、日、法等国的卫星遥感资料.因而如何解决我国高浓度悬浮泥沙遥感信息的定量分析是必须予以重视的问题.本文对黄河悬浮泥沙所做的波谱特性实验进行了研究,发现随着悬浮泥沙浓度的增加,其光谱反射率峰值波长向长波方向漂移.由此全面分析了黄河水体泥沙含量从7.97mg/dm~3到2324.8mg/dm~3的光谱反射率曲线,并建立了悬浮泥沙浓度SSC与反射率峰值发生波长λ_(Rmax)的数学模式,本文结果对高浓度悬浮泥沙遥感信息的提取有直接应用价值,并可作为我国卫星传感器通道设计的理论依据.
High concentration suspended sediment remote sensing is one of the special research topics in our country. Foreign work in this area is mainly the study of low concentrations of suspended sediment. At present, a large number of countries using the United States, Japan, France and other countries of satellite remote sensing data. Therefore, how to solve the quantitative analysis of remote sensing information on suspended sediment in China is a problem which must be paid attention to. In this paper, experiments on the spectral characteristics of suspended sediment in the Yellow River have been carried out. It is found that the peak wavelength of spectral reflectance shifts to the long-wave direction with the increase of suspended sediment concentration. The spectral reflectance curve of sediment concentration in the Yellow River from 7.97 mg / dm ~ 3 to 2324.8 mg / dm ~ 3 was comprehensively analyzed, and the relationship between suspended sediment concentration SSC and peak reflectance λ_ (Rmax) The results of this paper have direct application value for extracting remote sensing information of suspended sediment with high concentration and can be used as the theoretical basis for the design of satellite sensor channel in China.