摘要
本文提出了顾及时变因素影响的地心坐标转换方法,即考虑地壳形变影响的分极小法和模型的识别方法,这一方法应用于地面网点坐标的转换还能拟合网中其它局部性系统偏差。分极小法是通过寻找模型运用的区域来实现的,在该区域内模型能拟合各种系统性偏差,故该方法为我国地面网地心坐标转换精度达到极限(即仅取决于区域内网的相对偶然误差)提供了理论基础。文中介绍了基于该方法开发的实用系统并报告了实算结果。
This paper presents the geocentric coordinate transformation method which can account for the effect of the time-dependent factor,that is,the Divide Minimum Method and themethod of model recognition。 This method used in the traditional terrestrial network can alsoaccount for the partial systematic errors,The Divide Minimum Method is used by varying thesize of the region in which the model can reflect the various systematic errors。In the paper,the practical information system based on the Divide Minimum Method is described and thecalculated results are also reported.
出处
《测绘学报》
EI
CSCD
北大核心
1995年第4期275-282,共8页
Acta Geodaetica et Cartographica Sinica
基金
测绘遥感国家重点实验室
国家自然科学基金
关键词
坐标变换
地壳形变
大地测量
地心坐标
分极小法
Coordinate transformation,Crustal defomation,Systernatic errors,Geocentric geodetic reference system,Kinematic geodesy