Combination methods of tropospheric time series |
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| Authors: | R Pacione B Pace H Vedel S de Haan R Lanotte F Vespe |
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| Institution: | 1. E-GEOS, Centro di Geodesia Spaziale (CGS), Contrada Terlecchia, 75100 Matera, Italy;2. Danish Meteorological Institute (DMI), Lyngbyvej 100, 2100 Copenhagen, Denmark;3. Royal Netherlands Meteorological Institut (KNMI), Wilhelminalaan 10, De Bilt, The Netherlands;4. Agenzia Spaziale Italiana (ASI), Centro di Geodesia Spaziale Contrada, Terlecchia, 75100 Matera, Italy |
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| Abstract: | In this article we present two methods for combination of different Global Navigation Satellite Systems (GNSS) Zenith Total Delay (ZTD) time-series for the same GNSS site, but from different producers or different processing setups. One method has been setup at ASI/CGS, the other at KNMI. Using Near Real-Time (NRT) ZTD data covering 1 year from the E-GVAP project, the performance of the two methods is inter-compared and validation is made against a combined ZTD solution from EUREF, based on post-processed ZTDs. Further, validation of the ASI combined solutions is made against independent ZTDs derived from radiosonde, Numerical Weather Prediction (NWP) model and Very Long Baseline Interferometry (VLBI) ZTD. |
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| Keywords: | Troposphere delays Generalized least square Kalman filter Intra-technique combination GNSS meteorology Near Real-Time |
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