带状广域高程拟合方法的探讨

结合高速铁路建设中C级GPS控制网和二等水准数据,对石郑客运专线沿线143 km带状区域,分别构建多面函数模型、二次多项式和EGM2008重力场模型进行高程拟合分析.在特定区域,确定带状广域高程拟合最佳模型,验证获取厘米级甚至更高精度的正常高,以满足铁路工程、公路工程以及其他带状工程施工要求的可行性.

Discussion on Elevation Fitting Method of Band Wide-area

In this paper,based on C-class GPS control network and second level data in the high-speed railway construction,researched on 143km band wide-area along passenger dedicated high-speed railway of which from ShiJiazhuang to WuHan,By using of multi-faceted function model and quadratic polynomial model and EGM2008 gravity field model,carried out and analysis elevation fitting.In a specific region determine the best band wide-area fitting elevation model,and verification the feasibility to obtain the normal high posses centimeter-level or even higher accuracy,to meet the railway,road and other ribbon construction requirements.results of study has guiding significance on heoretical research and practical work.