Transition from the IGS14 to IGS20 antenna model file

For the IGS reprocessing campaign repro3 a set new set of multi-GNSS receiver and satellite antenna calibrations was generated based on the Galileo induced scale. In this presentation the transition from the original IGS repro3 ANTEX file to the final antenna model file (igs20.atx) including the adjustments of the z-component of the phase center offset to reflect the ITRF2020 scale is discussed.