[G01-P] Poster

[G01-P-13] IDS DORIS analysis centre Geodetic Observatory Pecny: development and research

^○Petr Stepanek, Michal Buday, Vratislav Filler (Research Institute of Geodesy, Topography and Cartography, Zdiby, Czech republic)

Geodesy Observatory Pecny (GOP) provides one of the International DORIS Service (IDS) analyses centers, participating on the combined IDS products including the solution for ITRF2014. As the unique approach, GOP employs a DORIS-developed version of the Bernese GPS Software. Besides the routine operating, the recent research focuses on several topics as preprocessing strategy and observation weighting, estimation of Earth rotation parameters, station clock modeling from the DORIS/pseudorange measurements, satellite attitude modeling and orbit parametrization. We demonstrate that observation weighting cos (Z) reduces the scale bias respect to ITRF2014 by about 3 ppb. Combination of this observation weighting and new preprocessing strategy has significant positive impact on the station repeatability and weekly station RMS with respect to DPOD/ITRF, as well as on the precise orbit determination.