摘要
对GPS工程水准网的布设、拟合法的模型选择和数据处理进行了探讨。通过实验网的布设和计算发现:在平坦和丘岭地区,控制面积不超出100km^2时,按三等以上水准测量的精度联测网中6～8个点,采用最佳三点平面拟合、二次多项式曲面拟合和hardy曲面拟合,求得GPS工程水准高程的精度可达2～4cm。
This paper discusses the interpolation techniques of converting GPS ellip-siod heights to engineering elevations based on a set of points with known elevations and GPS heights, the methods of the optimum 3-point plane, the moving quadritic surface and Hardy's multiquadrics are presented. The investigation demonstrates that 2-4 cm accuray is possible given 6 - 8 points elevations within 100 km2 range on plains and hilly lands.
出处
《测绘工程》
CSCD
1996年第2期27-32,共6页
Engineering of Surveying and Mapping
