摘要
基于辐射传输理论,结合Minnaert BRDF地形校正,以消除地形起伏对像元方向反射率的影响,进而发展了一种山地像元反射率精确反演模型。以密云水库地区为例,结合ETM遥感影像对该模型进行了实验验证,研究结果表明,通过该模型反演的山地像元反射率精确稳定,显著消除了地形的影响。
An optical remote sensing model for surface reflectance retrieval in rugged terrain is developed, which is based on ra- diative transfer theory and Minnaert BRDF model. The Minnaert BRDF model is used to remove the topographic effect on the directional reflectance of the pixel. Additionally, a new method to determine the Minnaert constant k is proposed. It is proved that the new method can overcome limitation in visible light band of the linear regression method by Smith. Finally, the model is validated using the ETM imagery of Miyun reservoir and the results are analyzed in the rest of the paper.
出处
《遥感信息》
CSCD
2008年第1期31-36,共6页
Remote Sensing Information
基金
国家自然科学基金项目(40701107)
中国科学院对地观测与数字地球科学中心青年人才项目
