IDS Combined Earth Rotation Parameters
Guilhem Moreaux (CLS, France)
Event: 2026 IDS Workshop
Session: Earth Rotation, Atmosphere, and Clock Products
Presentation type: Oral
DOI: 10.24400/312072/i03-2026.4463
Licence: 
Abstract
In the context of the realization of the IDS contribution to the 2025 update of the ITRF2020 (i.e. ITRF2020-u2025), the IDS Combination Center (IDS CC) delivered its first combined solution (IDS 27 series) including LOD (Lenght Of Day) estimates. These daily LOD values are obtained as the combination of the ESA and GOP contributions. Then, the IDS CC implemented different strategies to reduce the differences of the IDS Earth Rotation Parameters (ERPs) with respect to the IERS C04 series.
This study presents the different strategies implemented by the IDS CC and their impact on the quality of the IDS combined ERPs (X and Y pole coordinates and LOD) .
Contribution: IDS26_s5_Moreaux_IDSCombinedERPs.pdf (pdf, 2819 ko)
Corresponding author:
Guilhem Moreaux
CLS
France
