现代大地测量参考系统的进展

Modern Geodetic Reference Systems

概述现代大地测量参考系统的定义及不同参考系统之间的关系。主要讨论我国当代大地测量界常使用的3种用以表示几何位置的参考系统:1980年国家大地坐标系、全球大地测量系统1984(W G S84)、国际地球参考系统(ITRS)和一种用以表示物理位置、高程的参考系统:即1985年国家高程基准。并讨论大地测量中框架和基准的概念。

The definition of modern geodetic reference system and the relationship between different systems are discussed.Three reference systems for representing geometrical positions: the national geodetic reference system of China 1980,the World Geodetic System 1984(WGS 84),the International Terrestrial Reference System(ITRS),and one system for representing physical positions,i.e.a height reference system: the National Vertical Datum of China 1985,are mainly concerned.The concepts of frame and datum in geodesy are...