基于无缝分区技术的似大地水准面精化方法  

Refinement method of quasi-geoid based on seamless zoning technique

作　　者：戴一 胡伍生[1] DAI Yi;HU Wusheng(School of Communications, Southeast University, Nanjing 211189, China)

机构地区：[1]东南大学交通学院,江苏南京211189

出　　处：《山东交通学院学报》2021年第1期54-58,共5页Journal of Shandong Jiaotong University

基　　金：国家自然科学基金(41574022)。

摘　　要：为提高似大地水准面模型的精度,改善常用二次多项式拟合模型的缺点,提出基于无缝分区技术和二次曲面拟合相结合的似大地水准面精化方法,并利用江苏省C级全球定位系统(global positioning system,GPS)水准网数据进行工程试验验证。结果表明:与二次多项式模型相比,该方法的精度提高了80%,证实了其在工程应用中的有效性。In order to improve the accuracy of the quasi-geoid model and improve the shortcomings of the commonly used quadratic polynomial fitting models,a quasi-geoid refinement method based on seamless partition technology and quadric surface fitting is proposed,and the level network data of Jiangsu Province C-level the global positioning system(GPS)is verified by engineering tests.The results show that:compared with the quadratic polynomial model,the accuracy of this method is increased by 80%,which confirms its effectiveness in engineering applications.

关 键 词：似大地水准面精化 二次多项式模型 无缝分区技术 GPS 

分 类 号：P228.49[天文地球—大地测量学与测量工程]