摘要
文章介绍了GNSS所测三维大地坐标转换为工程所需三维坐标的方法,重点论述了顾及重力场模型的“移去—拟合—恢复”法在GNSS高程拟合中的应用。以某工程控制网数据为例,利用1stOpt软件完成了大地高向正常高转换,建立了该区域转换模型,并用该区域一些控制点验证了所建模型的可靠性。
This paper introduces the method of transforming the 3D geodetic coordinates measured by GNSS into the 3D coordinates required by the project,and focuses on the application of the"removing-fit-recovery"method considering the gravity field model in GNSS elevation fitting.Taking the data of an engineering control network as an example,the conversion of geodetic height to normal height is completed by using 1stOpt software,and the regional conversion model is established.The reliability of the model is verified by using some control points in the region.
作者
闫猛
YAN Meng(Jiangsu Province Surveying and Mapping Engineering Institute,Nanjing 210013,China)
出处
《测绘与空间地理信息》
2022年第10期97-98,101,共3页
Geomatics & Spatial Information Technology
关键词
坐标
大地高
正常高
高程拟合
重力场模型
coordinate
geodetic height
normal height
elevation fitting
gravity field model
