Repro3 Solutions Now Available

By IGS Central Bureau and IGS Reference Frame Coordinator

The final daily and weekly combined terrestrial frame solutions from the 3rd IGS reprocessing campaign (repro3), which form the IGS contribution to ITRF2020, are now available, with the prefix “IGS1R03SNX”, at ftp://igs-rf.ign.fr/pub/repro3.

Since the previous preliminary release two months ago, some contributing Analysis Centers (ACs) could extend their reprocessing. The final IGS repro3 terrestrial frame solutions are thus combinations of the following AC contributions:

* COD (Center for Orbit Determination in Europe): 1994-01-02 to 2020-12-31
– GLONASS included starting from 2002-01-01
– Galileo included starting from 2013-01-01

* ESA (European Space Agency):  1995-01-01 to 2020-12-31
– GLONASS included starting from 2009-01-01
– Galileo included starting from 2015-01-01

* GFZ (GeoForschungsZentrum):  1994-01-02 to 2020-12-31
– GLONASS included starting from 2012-01-01
– Galileo included starting from 2013-12-21

* GRG (Groupe de Recherche en Géodésie Spatiale): 2000-05-03 to 2020-12-31
– GLONASS included starting from 2008-11-04
– Galileo included starting from 2016-12-31

* JPL (Jet Propulsion Laboratory): 1994-01-02 to 2020-12-26
– GPS-only

* MIT (Massachusetts Institute of Technology): 2000-01-02 to 2020-12-31
– Galileo included starting from 2017-01-01

* NGS (National Geodetic Survey): 1994-01-02 to 2020-12-31
– GPS-only

* TUG (Graz University of Technology): 1994-01-02 to 2020-12-31
– GLONASS included starting from 2009-01-01
– Galileo included starting from 2013-01-01

* ULR (Université de la Rochelle): 2003-01-01 to 2020-12-31
– GPS-only

* WHU (Wuhan University): 2008-01-01 to 2019-12-31
– GLONASS included starting from 2010-09-28

Details about the available products, main modeling updates since repro2 and combination strategy can be found in IGSMAIL-8026: https://lists.igs.org/pipermail/igsmail/2021/008022.html