基于SPOT 6卫星遥感数据无控制点正射校正

Based on SPOT 6 Satellite Remote Sensing Data without Control Point Orthorectification

长期以来卫星遥感影像的正射校正主要是根据控制点采用多项式拟合的方法,该过程需要提供足够数量的分布均匀的地面控制点。但是在湿地、海洋、海岛等复杂的地形地区,由于地面特征不明显,工作人员无法作业或者需要全天时的定位,地面控制点的获取非常困难甚至无法实现。因此,本文介绍了RPC模型的定义形式,并以兴城市地区的SPOT 6影像为实验数据,采用RPC与DEM结合的方式,对全色与多光谱影像进行无控制点的正射校正。

For a long time,the orthorectification of satellite remote sensing images is mainly based on the control point using polynomial fitting method,which needs to provide a sufficient number of distributed ground control points. However,in the complex terrain such as desert,sea and island,it is often difficult or even impossible to obtain ground control points because of the obvious characteristics of the ground,the inability to reach or the need for real-time location. In this paper,the definition of RPC model is introduced,and the SPOT 6 image of Xingcheng area is used as experiment data,and the orthogonality correction of panchromatic and multispectral images is carried out by combining RPC and DEM.