基于遥感方法反演悬浮泥沙分布  

Study on the inversion model for the suspended sediment concentration in remote sensing technology

作　　者：李洪灵[1] 张鹰[1] 姜杰[2] 

机构地区：[1]南京师范大学地理科学学院,江苏南京210097 [2]南京邮电学院通信工程系,江苏南京210003

出　　处：《水科学进展》2006年第2期242-245,共4页Advances in Water Science

基　　金：国家自然科学基金重点资助项目(50339010)~~

摘　　要：基于遥感理论,采用地物光谱仪与光电测沙仪对同一水样同步测量的方法,确保建立相关关系数据的同步性;由地物光谱仪测得的光谱值推算出遥感反射率,并等效计算ETM+图象相应波段的遥感反射率;由光电测沙仪测出悬浮泥沙浓度;通过对等效算出的ETM+各个波段遥感反射率和悬浮泥沙浓度这两组数据的相关分析,得到4种形式的经验模型。结果表明,TM4与TM1波段光谱值的比值与悬浮泥沙浓度之间的相关系数最高,故应用该模式进行研究区域悬沙浓度反演。On the basis of the remote sensing theories, we get the spectrum and the concentration, and at the same time make sure of the correlation of the data simultaneously, then work out the remote sensing reflectance of ETM ＋ imagery relevant to the spectrum instrument. The photoelectricity instrument works out the suspended sediment concentration. Four kinds of the experiment models are derived from the correlation of the reflectance and the concentration. The results show that the ratio of TM4 to TM1 has the best correlation with the concentration, therefore we can make use of the model to derive suspended sediment distribution.

关 键 词：遥感反射率 悬浮泥沙浓度 ETM+ 反演模式 

分 类 号：TV142.1[水利工程—水力学及河流动力学] TP79[自动化与计算机技术—检测技术与自动化装置]