Ids and ITRF2013: Contribution and Evaluation

Monday, 15 December 2014: 9:00 AM
Guilhem Moreaux1, Frank G Lemoine2, Pascal Willis3, Hugues Capdeville1, Petr Stepanek4, Michiel Otten5, Sergei Kuzin6 and Pascale Ferrage7, (1)Collecte Localisation Satellites, Ramonville-Saint-Agne, France, (2)NASA Goddard SFC, Greenbelt, MD, United States, (3)IGN Institut National de l'Information Géographique et Forestière, Paris Cedex 13, France, (4)VUGTK, Ondrejov, Czech Republic, (5)European Space Operations Centre, Darmstadt, Germany, (6)Institute of Astronomy Russian Academy of Sciences, Moscow, Russia, (7)CNES French National Center for Space Studies, Toulouse Cedex 09, France
In the context of ITRF 2013, the IDS Combination Center is 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 six 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) station positions and week-to-week repeatability; (3) EOPs. Comparisons with IDS contribution to ITRF2008 will address the benefits of including both new DORIS data, and new DORIS missions (e.g. Jason-1, Jason-2, Cryosat-2) in the IDS combination. These comparisons will also emphasize the application of the DORIS ground antennae phase laws in the data processing and the improved modeling of DORIS ground beacon frequency variations.

In addition we will present early results of evaluation of ITRF2013 in the context of DORIS processing.