Frank Lemoine (NASA, USA); Pascal Willis (IGN-IPGP, France); Hugues Capdeville (CLS, France); Michiel Otten (ESA, Germany); Petr Stepanek (Geodesy Observatory Pecný, Czech Republic ); Sergey Kuzin (Space Geodesy Department - Institute of Astronomy - Russian Academy of Sciences, Russia); Pascale Ferrage (CNES, France)

In the context of the next release of the ITRF (ITRF 2013), the IDS Combination Center was involved in the estimation of DORIS stations positions/velocities as well as Earth orientation parameters from DORIS data. These computations are based on the latest series of all of the 6 IDS Analysis Centers multi-satellite weekly SINEX solutions from January 1993 to December 2013.
The primary objective of this study is to analyze the DORIS contribution to ITRF2013 in terms of (1) geocenter and scale solutions; (2) stations positions. Furthermore, we will focus on the impact of new standards such as the application of DORIS ground antennas phase laws in the data processing and improved modeling of DORIS ground beacon frequency variations. We will also address benefits of including new DORIS data in the IDS combination compared to ITRF2008, including data from new DORIS missions (e.g. Jason-2, Cryosat-2), as well as improved data for both Jason-1 and SPOT-5 where these satellite data are now corrected to accommodate perturbations introduced by the South Atlantic Anomaly (SAA).
In addition we will compare this new DORIS ITRF realization to the previous realization (ITRF2008).