GPS水准多项式曲面拟合模型的优选实验研究

Research on the Optimum Experiment based on the GPS Leveling Polynomial Surface Fitting Model

GPS高程曲面拟合的方法较多,文中利用移动多项式曲面拟合的基本原理,探讨了不同模型对已知点数量的多少以及已知点与拟合点之间的位置关系对精度的影响规律,通过在大连瓦房店核电厂实际工程中的实验研究,得出一些非常有实际使用意义的结论。对GPS实际生产作业具有一定的指导意义,同时我们通过处理数据的统计与比较,给出某一地区的最优模型。

There are many methods to fit curved surface of the GPS height. In the paper, based on basic principle of moving polynomials to make surface fitting, a probe is made into the law that different models affect numbers of given points and the position relation between given points and fitting points affects the accuracy. Through practice in actual engineering in Dalian Wafangdian Nuclear Power Plant, some valuable and practical conclusions are obtained, which is instructive for GPS actual production to some degree. Meanwhile, based on statistics and comparison of the processed data, the optimum model of a certain region is also given in the paper.