基于能量的地表反照率遥感反演方法研究  

A NEW METHOD OF SURFACE ALBEDO INVERSE MODEL BASED ON ENERGY TRANSMISSION

作　　者：梁文广[1] 赵英时[1] 

机构地区：[1]中国科学院研究生院资源与环境学院,北京100049

出　　处：《国土资源遥感》2007年第1期53-56,共4页Remote Sensing for Land & Resources

基　　金：国家自然科学基金项目资助(40571116)

摘　　要：从能量传输方程入手,推导出地表入射辐射通量密度的简便计算公式;根据反照率定义,提出基于能量的地表反照率反演新方法。用鄱阳湖地区TM遥感数据试验,其误差为4.91%。该方法不但简便易行,所需野外数据较少,物理意义明确,而且省去了窄波段反照率的计算过程,是一种遥感反演区域反照率的好方法。This paper deduces a simple formula for computing the incidence radiant flux density. Based on the definition of albedo, the authors put forward a new method of surface albedo inverse model. The TM data of the Poyang Lake were used to make a test, and the average relative error was only 4.91%. The method is easy to utilize, and it only needs spectral data of two different kinds of land covers. In addition, it doesn＇ t need the albedo computa- tion of narrow wavebands. The method proves to be a good means for inversion of surface albedo.

关 键 词：地表反照率 反射辐射通量密度 入射辐射通量密度 地物同步光谱数据 

分 类 号：TP75[自动化与计算机技术—检测技术与自动化装置]