Maximizing the consistency between regional and global reference frames utilizing inheritance of seasonal displacement parameters

Abstract Although modern global geometric reference frames (GRFs) such as the International Terrestrial Reference Frame (ITRF) can be used anywhere on Earth, regional (RRFs) are still to densify geodetic control and optimize solutions for continental-scale areas national purposes. Such RRFs formed by densifying ITRF, utilizing GPS / GNSS stations common both ITRF RRF. It is possible attach a RRF GRF ensuring that some or all of coefficients trajectory models in ‘inherited’ from define GRF. This done an epoch-by-epoch basis, (our preference) via transformations operate simultaneously space time. paper documents inconsistencies densification arise when stations’ ignore periodic displacements. results coordinate biases We describe generalized procedure minimize this inconsistency realizing any aligned other ‘primary’ frame. show method realize Argentine frame Posiciones Geodésicas Argentinas (POSGAR) discuss our results. Discrepancies motion amplitudes vertical were reduced 4 mm less than 1 multiple after applying technique. also propose adopting object-oriented programming terminology relationship between different frames, assists describing understanding hierarchy frames.