Analysis of GPS, VLBI and DORIS input time series for ITRF2014

摘要

In this work we have compared the Up componentudtime series reprocessed in view of the new ITRF2014. The solutionsudthat we have considered are the combinations of individualudsubmissions of the Operational Analysis Centers (ACs) as o-udcial IVS, IGS and IDS products.We have modelled time series asuddiscrete-time Marcov processes, we have detected and removeduddiscontinuities from data time series and estimated trends (longudterm signals). A frequency analysis making research of residualudperiodic signals and identification of the common ones to all theudthree space geodetic techniques has been performed. Preliminaryudresults on co-located sites are shown.