国土资源遥感Issue(2)：36-43,8.DOI:10.6046/gtzyyg.2015.02.06
基于Three Factor+C模型改进的地形辐射校正方法
An improved topographic correction based on the Three Factor + C model
摘要
Abstract
The topographic correction is the most critical component part of the remote sensing quantitative study of rugged terrain areas. According to the idea of slope grading in combination with the simplified Three Factor + C model, a Three Factor +C +Slope model was established to eliminate the defect of traditional and empirical topographic correction using the same coefficient as the slope changing. The results show that the Three Factor+C+Slope model is better than the C model, the SCS model, the Three Factor model and the Three Factor + C model in six calibration test indicators comprising the mean value, the standard deviation, the correlation between pixel value and illumination coefficient, the radiance discrepancy before and after correction, the dispersion index and the homogeneity coefficient. Due to its advantages such as excellent physical mechanism and considerable removal of the terrain effects on radiance, the Three Factor + C + Slope model is feasible and worthy of promo-tion.关键词
地形校正/Three Factor+C模型/坡度分级/离散系数/同质系数Key words
topographic correction/Three Factor +C model/slope grading/dispersion index/homogeneity coeffi-cient分类
信息技术与安全科学引用本文复制引用
张伟阁,杨辽,曹良中,贾洋..基于Three Factor+C模型改进的地形辐射校正方法[J].国土资源遥感,2015,(2):36-43,8.基金项目
国家863项目“城市复杂时空数据集成分析与空间决策模拟”(编号:2013AA122302)和“国家科技基础平台-地球系统科学数据共享平台-新疆与中亚科学数据共享平台”共同资助。 （编号:2013AA122302）
