TIME SERIES OF SATELLITE LASER RANGING STATION POSITIONS

The International Terrestrial Reference System is the current positioning reference for all geodetic computations. Its computation is evolving through the use of time series of terrestrial station positions together with time series of Earth Orientation Parameters. As a first step, we study here a processing strategy to determine position time series by the Satellite Laser Ranging technique (ranging measurements-from the international tracking network- and precise orbit determination for LAGEOS satellites). We show that, owing to improvements in orbit computation, physical signals clearly appear in the position time series determined in a free network approach