Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4683746 | Geodesy and Geodynamics | 2012 | 8 Pages |
Abstract
:In this paper, an improved weighted least squares (WLS), together with autoregressive (AR) model, is proposed to improve prediction accuracy of earth rotation parameters(ERP). Four weighting schemes are developed and the optimal power e for determination of the weight elements is studied. The results show that the improved WLS-AR model can improve the ERP prediction accuracy effectively, and for different prediction intervals of ERP, different weight scheme should be chosen.
Keywords
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Earth-Surface Processes
Authors
Sun Zhangzhen, Xu Tianhe,