A New Terrestrial Reference Frame: Combining SLR and GPS at the Observation Level Using Space Ties on the GRACE and Jason Missions

Bruce Joseph Haines, Willy Bertiger, Shailen Desai, Michael B Heflin, Da Kuang, Mark A Miller, Athina Peidou, Paul A Ries and Xiaoping Wu, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, United States