Improving prediction of Earth OrientationParameters for real-time geodesy

我们打算提高目前对地球定向参数(EOP)的预测质量，该参数包括章动偏移量、极移和描述地球自转的日长变化。通过全球导航卫星系统(GNSS)、卫星激光测距(SLR)或甚长基线干涉测量(VLBI)等现代空间大地测量方法测量EOP。国际地球自转和参考系统服务处(地球自转和参考系服务处)定期以时间序列的形式提供观测到的地球观测数据，这些时间序列是根据所有不同技术的组合确定的。

We intend to advance the quality of present-day predictions of Earth Orientation Parameters (EOP) comprising of nutation offsets, polar motion, and length-of-day variations that describe the rotation of our planet. EOP are measured from modern space geodesy methods such as global navigation satellite systems (GNSS), satellite laser ranging (SLR) or very long baseline interferometry (VLBI). Observed EOP are regularly delivered by the International Earth Rotation and Reference System Service (IERS) in the form of time series determined from a combination of all different techniques.