For the first time in the International Terrestrial Reference Frame (ITRF) history, the
ITRF2014 is generated with an enhanced modeling of nonlinear station motions, including …

We describe a VLBI experiment in which, for the first time, the clock reference is delivered
from a National Metrology Institute to a radio telescope using a coherent fibre link 550 km …

In this study, we estimate integrated water vapor (IWV) trends from very long baseline
interferometry (VLBI) and global navigation satellite systems (GNSS) data analysis, as well …

The celestial sources observed by geodetic very‐long‐baseline interferometry (VLBI), most
of which are quasars, are resolved—they have a finite angular size as measured by the …

Every few years the International Terrestrial Reference System (ITRS) Center of the
International Earth Rotation and Reference Systems Service (IERS) decides to generate a …

Local ties (LTs) at co-located sites are currently used to combine different single-technique
solutions to determine global terrestrial reference frames (TRFs). We assess by simulations …

The AUSTRAL observing program was started in 2011, performing geodetic and astrometric
very long baseline interferometry (VLBI) sessions using the new Australian AuScope VLBI …

Currently, the requirements of the Global Geodetic Observing System are not yet met by the
latest global terrestrial reference frames (TRF). In this study, we assess potential TRF …

The CONT14 campaign with state-of-the-art very long baseline interferometry (VLBI) data
has observed the source 0642+ 449 with about 1000 observables each day during a …

We compare nutation time series determined by several International VLBI Service for
geodesy and astrometry (IVS) analysis centers. These series were made available through …