基于重力场模型的似大地水准面精化及其应用研究
Quasi Geoid Refinement and Its Application Based on Gravity Field Model
吴晓倩 1刘楠 1张浩男 1姚远 1傅圆圆 1赵倩倩1
作者信息
- 1. 国家海洋局秦皇岛海洋环境监测中心站,河北 秦皇岛 066002
- 折叠
摘要
为了将GNSS测量的高程快速转化为正常高,使用山东省某地区点位数据,通过"移去—恢复"法,利用EGM96 和EGM2008 模型构建似大地水准面,对比二次多项式拟合和三次多项式拟合精度,验证该地区最优方案.结果表明,使用二次多项式拟合双线性插值法的 EGM2008 重力场模型拟合精度最高,外符合精度为0.034 m.
Abstract
In order to quickly convert the elevation measured by GNSS into normal height,the quasi geoid is constructed by using the point data of a certain area in Shandong province and the EGM96 and EGM2008 models through the"remove-restore"method,and the quadratic polynomial fitting and cubic polynomial fitting accuracy are compared to verify the optimal scheme in this area.The re-sults show that the bilinear interpolation method EGM2008 gravity field model using quadratic polynomial fitting has the highest fitting accuracy,and the external coincidence accuracy is 0.034m.
关键词
大地高/正常高/高程异常/EGM96模型/EGM2008模型Key words
geodetic height/normal height/elevation anomaly/EGM96 model/EGM2008 model引用本文复制引用
出版年
2024
NETL
NSTL
万方数据