阜新市区似大地水准面拟合研究  

Research on the refinement of quasigeoid in Fuxin

作　　者：周志富[1] 杨莉[1] 王佩贤[2] 

机构地区：[1]山西大同大学工学院,山西大同037003 [2]辽宁工程技术大学测绘与地理科学学院,辽宁阜新123000

出　　处：《测绘工程》2010年第3期47-50,共4页Engineering of Surveying and Mapping

摘　　要：基于GPS水准的阜新市区似大地水准面拟合问题,对获得的高程异常数据采用Huber抗差估计方法剔除粗差,并运用逐点剔除法选取GPS水准拟合的已知点,提高似大地水准面的拟合精度;通过对GPS水准中5种模型的试验比较,得到建立该地区似大地水准面的最佳方案—多面函数法。经闭合差检核,精度可达到四等水准的要求。The fitting of quasigeoid of Fuxin urban based on GPS leveling is studied in this paper.The Huber robust estimation method is used to eliminate the outliers in the height anomalies.At the same time,the one-by-one elimination method is used to select the known points of GPS leveling and it improves the fitting precision.Then the optimum scheme-multidimensional function method which is used to establish the quasigeoid of the studied area is gotten after the comparison of five experiments of the GPS leveling m...

关 键 词：似大地水准面 GPS水准 高程异常 残差 内符合精度 外符合精度 

分 类 号：P228.4[天文地球—大地测量学与测量工程]