毫米级地球参考框架动态维持技术研究进展  

Advances in Dynamic Maintenance Technology of mm-Level Terrestrial Reference Frame

作　　者：孙付平[1] 贾彦锋 朱新慧[1] 肖凯[1] 刘婧[1] SUN Fuping;JIA Yanfeng;ZHU Xinhui;XIAO Kai;LIU Jing(Institute of Geospatial Information,Information Engineering University,Zhengzhou 450000,China)

机构地区：[1]信息工程大学地理空间信息学院,河南郑州450000

出　　处：《武汉大学学报（信息科学版）》2022年第10期1688-1700,共13页Geomatics and Information Science of Wuhan University

基　　金：国家自然科学基金(42174047)。

摘　　要：毫米级地球参考框架的实现需要毫米级的动态维持技术。目前的动态维持技术主要有基于线性速度的线性维持技术、综合考虑基准站非线性运动和地心运动的非线性维持技术以及历元参考框架技术。首先简要总结了线性维持技术的发展现状,从影响机制和坐标时间序列两个角度,围绕坐标非线性变化的建模方法,重点梳理了非线性维持技术的研究进展;然后对历元参考框架的实现过程及其在参考框架维持中的应用进行了介绍;最后基于对现状的分析,提出了实现毫米级地球参考框架动态维持需要解决的几个关键问题。The mm-level dynamic maintenance technology is essential to the realization of mm-level terrestrial reference frames. The current dynamic maintenance technology mainly includes the linear maintenance based on linear velocity, the nonlinear maintenance technology that comprehensively considers the nonlinear motion of stations and geocentric motion, and the epoch reference frame. Firstly, the development status of the linear maintenance technology is summarized. The nonlinear maintenance technology and its research progress are discussed by reviewing the modelling method of coordinate nonlinear variation from the influence mechanism and data. Then, the realization process of the epoch reference frame and its application in the maintenance of the reference frames are introduced. Finally, based on the analysis of status quo, several key issues that need to be solved are proposed to achieve the dynamic maintenance of the mm-level terrestrial reference frame.

关 键 词：毫米级地球参考框架 线性维持 非线性维持 坐标时间序列 非线性运动 地心运动 

分 类 号：P226[天文地球—大地测量学与测量工程]