Modeling of the Influence of Geophysical and Atmospheric Effects in Position and Gravity Changes

Janusz Bogusz, Micha Kruczyk, Mariusz Figurski, Tomasz Liwosz, Magdalena Pfeil and Jerzy B. Rogowski

Abstract:	The following permanent services operate at the Astrogeodetic Observatory of the Institute of Geodesy and Geodetic Astronomy of the Warsaw University of Technology in Józefos³aw: GPS observations using Trimble and Turbo Rogue receivers, tidal gravimetric observations with LaCoste&Romberg model D gravimeter, astrometric latitude observations and meteorological. In 1991 it was joined to the International GPS Service for Geodynamics (IGS) and started to operate as a permanent one in 1993. Since 1995 WUT Local Analysis Centre, one of the 12 local Analysis Centres now acting in Europe, has started the systematic day-to-day processing of the selected number of European sites in the frame of the EUREF network. Research programme performed by the Astrogeodetic Observatory of the Institute of Geodesy and Geodetic Astronomy of the Warsaw University of Technology Józefos³aw aims at observing and modelling the influence of different geophysical phenomena to the gravity and position changes. For this purpose and research the ionosphere and troposphere parameters collocation of different observations methods is used. These studies are indispensable to improved accuracy of GPS data processing. For these purposes, models of geophysical effects, such as the Earth and atmospheric tides, ocean and atmosphere loading will by improved and tested. Some examples of processing of GPS data made are also presented in the paper.
Published in:	Proceedings of the 13th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 2000) September 19 - 22, 2000 Salt Palace Convention Center Salt Lake City, UT
Pages:	416 - 424
Cite this article:	Bogusz, Janusz, Kruczyk, Micha, Figurski, Mariusz, Liwosz, Tomasz, Pfeil, Magdalena, Rogowski, Jerzy B., "Modeling of the Influence of Geophysical and Atmospheric Effects in Position and Gravity Changes," Proceedings of the 13th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 2000), Salt Lake City, UT, September 2000, pp. 416-424.
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