SRTM空值区域填充方法的对比研究

Comparison of the Patching Method of Void Value in SRTM

由于阴影、像位解缠等原因SRTM数据中存在着大量的空值点。针对空值区域,本文介绍了常用的填充方法,详细地阐述了Kriging插值法的实现过程。并通过对部分方法的实现,比较了不同方法的填充效果。

There are lots of voids in the files of SRTM, from a number of causes such as shadowing, phase unwrapping anomalies etc. According to the voids field, we introduce some patching methods, and discuss the process of Kriging interpolation in details. Based one the result of different methods, we compare their effects on the void values.