高程拟合取代水准测量研究

本文主要研究的是GPS高程拟合方面的内容，重点介绍了二次曲面高程拟合模型。。结合对内蒙某矿高程数据水准拟合结果说明利用GPS定位技术，不但可以获取地面点的精密平面坐标，而且，通过建立一定范围内的GPS高程异常模型也可以较精密的拟合地面正常高。其成果很可靠。理论分析和实践检验表明，在平坦地区的局部GPS控制网测量中，GPS高程测量可以逐步代替四等水准测量是可行的。

the research on replacement of fitting to leveling

This paper mainly research on the GPS elevation fitting, and introduced elevation fitting models of polynomial fitting Combination of elevation data on the level of a mine in Inner Mongolia fitting results show that we can not only to obtain precision plane coordinates of ground points with the using of GPS positioning technology, but also the more sophisticated ground-normal fitting through the establishment of a range of GPS height anomaly model . The results are reliable. Theoretical analysis and practical tests show that in the flat area of the local GPS control surveying, GPS elevation measurements can gradually replace the four-leveling.