Rigorous Combination of GNSS and VLBI: How it Improves Earth Orientation and Reference Frames

Jean-Yves Richard1, Sébastien Bernard Lambert1, Christian Bizouard2 and Olivier Becker3, (1)SYRTE, Observatoire de Paris, PSL Research University, CNRS, Sorbonne Universités, UPMC Univ. Paris 06, LNE, Paris, France, (2)Paris Observatoiry, SYRTE, PSL Research University, CNRS, Sorbonne Universites, UPMC Univ, Paris 06, LNE, PARIS, France, (3)Observatoire de Paris, PSL, CNRS, Sorbonne Universités, UPMC, Paris 06, Paris, France