标题：Analysis on the differences between EOP 08C04 and EOP 14C04 related to the Earth rotation characteristics
作者：Sun Z.; Xu T.; Zhou S.; Jiang N.; Jiang C.; Yang Y.
作者机构：[Sun, Z] Institute of Space Science, Shandong University, Weihai, China;[ Xu, T] Institute of Space Science, Shandong University, Weihai, China;[ Zhou 更多
通讯作者地址：[Xu, T] Institute of Space Science, Shandong UniversityChina;
来源：Journal of Spatial Science
关键词：Earth rotation parameters; EOP 14C04; high-frequency variation; ITRF2014; LS+AR model
摘要：February 1, 2017, EOP 14C04 aligned to the ITRF2014 was adopted by IERS. To assess the improvement of EOP 14C04, the differences between EOP 14C04 and EOP 08C04 are firstly analyzed. Then, the causes of the differences between the two solutions are examined. Finally, the differences are further assessed for their prediction performance using the LS+AR model. The results demonstrate that (1) there is a trend in the difference between the two solutions; (2) the cause of the above-mentioned difference should be attributed to the different reference frames; (3) the new EOP 14C04 shows better performance for high-frequency signals. © 2020, © 2020 Mapping Science Institute, Australia and Surveying and Spatial Science Institute.