| 垂线偏差的确定方法及精度分析 |
| |
| 引用本文： | 张永毅,张兴福.垂线偏差的确定方法及精度分析[J].大地测量与地球动力学,2016,36(5):395. |
| |
| 作者姓名： | 张永毅 张兴福 |
| |
| 摘 要： | 基于美国GSVS2011计划完成的高精度GNSS水准数据及垂线偏差数据，研究确定地面垂线偏差的数值拟合法、GNSS水准法、地球重力场模型法和基于移去恢复技术的数值拟合法等方法的精度。结果表明，数值拟合法、地球重力场模型法和基于移去恢复技术的数值拟合法都具有较好的精度，其中Biharmonic(v4)直接拟合法效果较好，移去恢复技术能在一定程度上提高数值拟合精度，而GNSS水准法精度相对较差。
|
| 关 键 词： | 垂线偏差 数值拟合法 GNSS水准法 地球重力场模型法 移去恢复技术 |
Determination and Accuracy Analysis of Vertical Deflection |
| |
| ZHANG Yongyi,ZHANG Xingfu.Determination and Accuracy Analysis of Vertical Deflection[J].Journal of Geodesy and Geodynamics,2016,36(5):395. |
| |
| Authors: | ZHANG Yongyi ZHANG Xingfu |
| |
| Abstract: | In this paper, the determination methods of vertical deflection, including numerical fitting, GNSS leveling, Earth gravity field model, and numerical fitting based on remove-restore technique, are investigated. The experiment is conducted using a high precision data set of GNSS leveling and verticaldeflection from the project of the geoid slope validation survey of 2011(GSVS2011). The results show that numerical fitting, Earth gravity field model, and numerical fitting based on remove-restore technique have good fitting accuracy, that the Biharmonic (v4) method from numerical fitting model has better fitting accuracy, and that fitting accuracy can be improved based on the remove-restore technique. However, the accuracy of the GNSS leveling method is relatively poor. |
| |
| Keywords: | |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《大地测量与地球动力学》浏览原始摘要信息 |
| 点击此处可从《大地测量与地球动力学》下载免费的PDF全文 |
|
