CAJ | 학술논문

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。
위제고구릉지구GPS수준의합정도,건립괄합당지측구적의합모형,채용다면함수법대고정이상진행의합。통과실례대모형관건문제화의합정도진행료분석,중점연구광활인자적선취대핵함수적영향,병여이차곡면의합법상대비,진행료정도분석。
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 analyzed.