基于EGM2008“移去恢复”法的GPS高程拟合精度分析  

Analysis of GPS Elevation Fitting Accuracy Based on the Remove-restore Method of the EGM2008

作　　者：苗龙 谢忠俍[2] 

机构地区：[1]新疆维吾尔自治区第二测绘院,新疆乌鲁木齐830001 [2]陕西铁路工程职业技术学院,陕西渭南714099

出　　处：《地理空间信息》2015年第3期155-156,13,共2页Geospatial Information

摘　　要：通过对2008地球重力场模型的介绍,阐述了基于EGM2008"移去恢复"法的原理,应用工程的实例数据,对比直接构建的一次曲面、二次曲面以及多面函数数学模型的精度,分析检查点的内符合与外符合差值,结果该方法较常规方法精度有较大的提高。With the introduction of the EGM2008, this paper described the principle of the remove-restore method based on EGM2008. And then, the paper used example data of application engineering to contrast the accuracy of the curved surface fitting, quadric surface fitting and the accuracy of mathematical model about multi-faceted function, and analyzed the differences of inside coincidence and outside coincidence. At last, the result shows that the new method is much better in accuracy than the normal methods.

关 键 词：EGM2008 移去恢复法 剩余高程异常 

分 类 号：P223.0[天文地球—大地测量学与测量工程]