山区遥感影像地形辐射统计校正模型改进研究

Research of an Improved Statistical Models of Topographic Radiation Correction

山区地形起伏导致太阳光照不同,造成遥感影像接收的辐射信息不能反映地表的真实信息,从而影响遥感影像的解译与处理。本研究基于常用的地形辐射统计校正模型,结合山区植被覆盖特征,设计了一种分区统计校正模型,并采用三种不同分辨率的卫星遥感影像进行了实验,结果显示改进后模型的地形辐射校正效果有明显改善。

The difference in solar illumination caused by the undulating terrain in mountainous areas,resulting in the radiation information received by the sensors not reflecting the true information of the ground surface,which will affect the interpretation and processing of remote sensing images.In this study,a zonal statistical correction model based on vegetation cover characteristics in mountainous areas was designed on the basis of the topographic radiation statistical correction model.Finally the model was applied to three different resolutions of satellite remote sensing images,and the results showed that the terrain radiation correction effect of the improved model was significantly improved.