用几何法实现矿区GPS高程转换

ADOPED GEOMETRIC METHOD INSTEAD OF GPS ALTITUDE CONVERSION IN MINING AREA

通过一个实测算例对矿区GPS高程转换问题进行了讨论，提出了在矿区局部区域用几何法实现GPS高程转换的可行性，并得出了在似大地水准面比较平滑的地区，用低次幂多项式的曲面拟合方法能正确反映本地区似大地水准面的起伏状况。

Discussed the problom of GPS altitude conversion in mining area by an exemple practice measure calculation, offered the possibility by adoption geometric method instead of GPS altitude conversion in the part of mining area, obtained the curved surface fitting by adoption of low power multinomial in the smooth area with similarity leviiing surface, reflected the ground surface rise and fall situation with similarity leviiing surface.