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为提高丘陵地区GPS水准拟合精度,建立适合当地测区的拟合模型,采用多面函数法对高程异常进行拟合。通过实例对模型关键问题和拟合精度进行了分析,重点研究光滑因子的选取对核函数的影响,并与二次曲面拟合法相对比,进行了精度分析。 更多还原

【Abstract】 To improve the GPS leveling fitting accuracy of hilly terrain and to build the adaptive fitting model of the coverage,this article uses the multidimensional function method to fit the height anomaly.The key points and fitting accuracy of modeling are analyzed through examples and the research puts great emphasis to finding out how the selection of the smoothing factor affects the kernel function.Compared with conicoid fitting,the fitting accuracy of multidimensional function method is also analy...