摘要
ITRF2014通过对多种空间大地测量技术解的联合处理,在ITRF2014建立过程中首次对非线性运动建模,包括季节性变化的估计和震后形变(PSD)模型的应用。针对基准定义、输入数据和数据处理策略等方面介绍ITRF2014实现的基本情况,并对之前版本进行优化改进。
The latest realization of the International Terrestrial Reference Frame(ITRF)is the ITRF2014,published by the IERS in January 2016.The ITRF2014 is realized by combining solutions of different space geodesy techniques.In the preparation for ITRF2014,the non-linear motions are modeled for the first time,including the estimation of the seasonal terms and the application of postseismic deformation(PSD)models.The basic information of the datum definition,the input data and the data processing strategy are introduced.And the main improvements of ITRF2014,compared with the previous versions of ITRF,are analyzed.
出处
《测绘工程》
CSCD
2017年第9期1-4,共4页
Engineering of Surveying and Mapping
基金
国家自然科学基金资助项目(41274015
41674019)
国家重点研发计划项目(2016YFB0501701)
