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Parallactic delay for geodetic VLBI and non-orthogonality of the fundamental axes
The Gaia optical astrometric mission has measured the precise positions of millions of objects in the sky, including extragalactic sources also observed by Very Long Baseline... -
Transitioning to IGS20, a case study with APREF
As the Central Bureau for the Asia Pacific Reference Frame (APREF), Geoscience Australia were keen to transition to the most up-to-date realisation of a trusted global reference...
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