中文摘要：

根据插值算法权重确定方法的差异，分别选取反距离加权插值算法、径向基函数插值算法和普通克里格插值算法中相关插值参数，进行“优选”试验研究。首先根据插值参数对插值精度的不同影响，选择相关插值参数作为试验研究对象，选择6种不同地貌类型地区的稀疏分布的离散采样点作为试验数据源。然后运用交叉验证法、相关分析、趋势面分析和方差分析等一系列试验方法，系统研究并给出试验插值参数的“最优”取值区间，消除插值参数选择的随意性，更好地指导DEM建模的运用。

英文摘要：

Bosed on the difference of the weight determination method in interpolation olgorithm, it is focused on selecting “optimized” interpolation parameters in interpolation method by selected related parameters with inverse distance weighted interpolation method, radial basis functions interpolation method and ordinary Kriging interpolation method. Firstly, according to the different effects of the interpolation parameters on interpolation accuracy, it takes the relevant interpola- tion parameters as the experimental object. Then chosen six different regions of landform types of the sparse distribution and discrete sampling data as data source. Finally applied a series of methods such as cross validation, correlation analysis, trend surface analysis ond variance of analysis to systematic research on choosing optimized DEM interpolation parameters and proposed the uncertainty of the interDolotion parameters of the “optimum” value range.