地球参考框架的发展现状和未来展望

Development Status and Prospects of the Geodetic Terrestrial Reference Frame

摘要:

地球参考框架是国家重要的空间基础设施，是地球上人类所有活动的空间参考基准。本文首先阐述了国际地球参考框架（International Terrestrial Reference Frame，ITRF）的发展现状，重点评述了ITRF的建立与维持，针对ITRF的发展现状提出了存在的问题；其次，以ITRF与2000国家大地坐标系（China Geodetic Coordinate System 2000，CGCS2000）的关系及现状为切入点，探讨了我国建立北斗坐标系的必要性，介绍了建立北斗坐标系的基本思路以及初始实现；最后，对地球参考框架的未来发展进行了展望。

Abstract:

The Geodetic Reference Frame is an important national space infrastructure and a spatial reference for all human activities on the earth. This article elaborates on the development status of the International Terrestrial Reference Frame(ITRF),reviews the establishment and maintenance of the international ITRF,and raises the existing problems for the state of the art of the international ITRF. Based on the relationship and status of ITRF and the China Geodetic Coordinate System 2000,the necessity of establishing the Beidou Coordinate System in China is discussed,and the basic ideas and initial implementation of the Beidou Coordinate System is introduced. Finally,the future development of the geodetic reference frame is prospected.