国际地球参考框架建立与维持的研究进展  

Progress on the establishment and maintenance of ITRF

作　　者：门葆红 董文亮 孙付平[3] 刘帅[3] 

机构地区：[1]信息工程大学地理空间信息学院 [2]61711部队 [3]信息工程大学导航与空天目标工程学院

出　　处：《测绘科学》2016年第2期20-25,共6页Science of Surveying and Mapping

基　　金：国家自然科学基金项目(41374027)

摘　　要：针对现代大地测量学对毫米级国际地球参考框架的需求,该文简单回顾了国际地球参考框架的发展概况,系统地介绍了国际地球参考框架建立方法及基准约束的演变情况;在此基础上,详细阐述了两种国际地球参考框架维持方法,即线性模型和非线性模型维持方法的框架点坐标位移模型改进情况、地球质心运动模型改进情况,及监测网和并置站的布设情况;最后,给出了国际地球参考框架的改进计划,指出了动态实时维持是下一步的研究重点,对参考框架维持方法的研究具有一定的参考价值。Since international terrestrial reference frame（ITRF）has the most stringent definitions and the highest accuracy,it is used as the reference to establish other reference frames.This paper briefly reviewed the development of ITRF and systematically introduced the establishment methods and constraint evolution of the datum of ITRF.On this basis,two methods that maintain the ITRF were elaborated,which were linear maintenance model and the nonlinear maintenance model.Then,the improvement of point coordinate displacement model and geocentric motion model,the distribution of monitoring network and co-locations states of ITRF were introduced.Finally,this paper gave the improvement plan of ITRF,and pointed out that the key issues should be studied was the methods to maintain the reference frame dynamically and in real-time.The results would provide reference for the research on the maintenance of reference frame.

关 键 词：国际地球参考框架 建立 维持 改进计划 

分 类 号：P22[天文地球—大地测量学与测量工程]