文章基本信息

标题：A Model of Topographic Correction and Reflectance Retrieval for Optical Satellite Data in Forested Areas
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作者：Cheng Wei ; Tian Qingjiu ; Wang Liming 等
期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2008
卷号：XXXVII Part B6b
页码：243-248
出版社：Copernicus Publications
摘要：Topographic correction is a necessary step of pre-process in the remote sensing application in rugged terrain. Most of traditional topographic correction methods are empirical and statistical based. These methods have the advantage of facility; however they also have some disadvantages, such as lack of comprehensive physical analysis, subjectivity in operation, separation of atmospheric correction and so on. Instead, the topographic correction model based on radiative transfer theory can overcome these disadvantages in a degree. In this paper, an optical, radiative transfer theory based model for topographic correction and surface reflectance retrieval for forested terrain is developed. This model is established by modifying existing radiative transfer theory based model (developed by Sandmeier et al). The difference between the two models is that the modified model is developed in sub-pixel scale, which SCS correction is also based on. Finally, the model is validated using the ETM imagery and DEM of Lipin County, Guizhou province, China. Visual and statistical methods are used to evaluate the results of the two models. In comparison with existing radiative transfer theory based model, the modified model has a better result in removing the terrain effects of imagery in forested areas
关键词：Remote Sensing; DEM; Landsat; Adjustment; Forestry; Topographic Correction