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

作　　者：吴晓倩 刘楠 张浩男 姚远[1] 傅圆圆 赵倩倩 WU Xiaoqian;LIU Nan;ZHANG Haonan;YAO Yuan;FU Yuanyuan;ZHAO Qianqian(Qinhuangdao Marine Environment Monitoring Center Station of the SOA,Qinhuangdao 066002,China)

机构地区：[1]国家海洋局秦皇岛海洋环境监测中心站,河北秦皇岛066002

出　　处：《测绘与空间地理信息》2024年第8期212-215,共4页Geomatics & Spatial Information Technology

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。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 results 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 

分 类 号：P223[天文地球—大地测量学与测量工程]