ITRF2014 is the new realization of the International Terrestrial Reference System. Following the procedure already used for the ITRF2005 and ITRF2008 formation, the ITRF2014 uses as input data time series of station positions and Earth Orientation Parameters (EOPs) provided by the Technique Centers of the four space geodetic techniques (VLBI, SLR, GNSS and DORIS). Based on completely reprocessed solutions of the four techniques, the ITRF2014 is expected to be an improved solution compared to ITF2008.

Two innovations were introduced in the ITRF2014 processing, namely:

• Annual and semi-annual terms were estimated for stations with sufficient time-spans of the 4 techniques during the stacking processes of the corresponding time series;
• Post-Seismic Deformation (PSD) models were determined by fitting GNSS/GPS data at major GNSS/GPS Earthquake sites. The PSD models were then applied to the 3 other techniques at EQ Co-location sites.

While the ITRF2014 solution provides the usual/classical estimates: station positions at a given epoch (2010.0), station velocities and EOPs, the PSD models are part of the ITRF2014 products. Read more...

• Space geodesy solutions from 4 space geodesy techniques. Description

ITRF2014 SINEX and other files ITRF2014 SSC files ITRF2014 tie and space geodesy discrepancies

Figure 1: ITRF2014 velocity field