At present, the problem of filling the data empty of the ASTER GDEM needs fast, efficient and scientific approach. This paper proposes a method of using SRTM DEM which is local correction for the inverse distance weighted average method-by-pixel interpolation of the ASTER GDEM based on the AO model in ArcGIS 10 when SRTM for the underlying data source to produce large area Demits for interpolation processing to fill small voids GTOPO30 terrain data with lower resolution data fusion process to fill the remainder of the larger hole, through the actual research to show that the method is a practical way to obtain complete topographic data.%针对ASTER GDEM数据存在的数据空洞问题,本文以SRTM为基础数据源,基于ArcGIS的AO模型,提出了利用局部修正后的SRTM DEM作反距离加权平均逐像元插补ASTER GDEM的异常区域的方法.对其作内插处理填补细小空洞,再与较低分辨率的GTOPO 30地形数据作数据融合处理填补剩余较大空洞.研究结果表明:该方法是一种切实可行的获取完整地形数据的途径.
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