摘要
利用野外采集的悬沙样品配置不同粒径和浓度等级的悬沙水样,进行实验室光谱测量,分析悬沙水样的光谱特征及其反射率与粒径之间的关系。根据实验结果选取泥沙浓度和粒径的敏感波段,建立了敏感波段模型和主成分模型。结果表明,主成分分析法能大量获取多通道悬沙水体光谱反射率信息,模型的反演能力优于敏感波段模型。
In this paper,the tidal creek out of the New Beiling Gate in Hai′an County of Jiangsu Province is taken as a study area.Spectral radiance of suspended sediment water is measured and surface layer suspended sediments data are collected simultaneously.The characteristics of reflected spectrum of suspended sediment and the relationship between reflectance and the size of sediments are analysed.Based on the results,the predictive and observed value of SSC by various models are evaluated,in which the principal component model shows better precision.
出处
《海洋工程》
CSCD
北大核心
2007年第4期96-101,共6页
The Ocean Engineering
基金
国家自然科学基金重点资助项目(50339010)
国家"211工程"建设项目资助
关键词
遥感
光谱反射率
悬浮泥沙浓度
遥感反演模式
remote sensing
spectrum reflectance
suspended sediment concentration
quantitative remote sensing model
