Abstract In this paper station coordinate time series from three space geodesy techniques that have contributed to the realization of the International Terrestrial Reference Frame 2014 (ITRF2014) are compared. In particular the height component time series extracted from official combined intra-technique solutions submitted for ITRF2014 by DORIS, VLBI and GNSS Combination Centers have been investigated. The main goal of this study is to assess the level of agreement among these three space geodetic techniques. A novel analytic method, modeling time series as discrete-time Markov processes, is presented and applied to the compared time series. The analysis method has proven to be particularly suited to obtain quasi-cyclostationary residuals which are an important property to carry out a reliable harmonic analysis. We looked for common signatures among the three techniques. Frequencies and amplitudes of the detected signals have been reported along with their percentage of incidence. Our comparison shows that two of the estimated signals, having one-year and 14days periods, are common to all the techniques. Different hypotheses on the nature of the signal having a period of 14days are presented. As a final check we have compared the estimated velocities and their standard deviations (STD) for the sites that co-located the VLBI, GNSS and DORIS stations, obtaining a good agreement among the three techniques both in the horizontal (1.0mm/yr mean STD) and in the vertical (0.7mm/yr mean STD) component, although some sites show larger STDs, mainly due to lack of data, different data spans or noisy observations.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Comparison of ITRF2014 station coordinate input time series of DORIS, VLBI and GNSS


    Beteiligte:

    Erschienen in:

    Advances in Space Research ; 58 , 12 ; 2742-2757


    Erscheinungsdatum :

    2016-07-11


    Format / Umfang :

    16 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch






    The development of the GSFC DORIS contribution to ITRF2014

    Lemoine, F.G. / Chinn, D.S. / Zelensky, N.P. et al. | Elsevier | 2015



    The Development of the GSFC DORIS Contribution to ITRF2014

    Lemoine, F. G. / Chinn, D. S. / Zelensky, N. P. et al. | NTRS | 2016