HIGHLIGHTS
SUMMARY
Knowledge of Celestial Reference Frame (CRF) and of Terrestrial Reference Frame (TRF) is fundamental for orbit computation, in particular for metrological applications such as altimetry (e_g, ocean radar altimetry, laser and radar altimetry over land surfaces and ice sheets, and interferometric synthetic-aperture radar mapping of land surface change), as well as for more precise position determinations of Earth orbiting satellites. For its accurate monitoring and reliable prediction, the accuracy and long-term stability of the TRF should be at least one order of magnitude better than the observed effects, leading to the GGOS . . .
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