Scientific applications of the Global Positioning System (GPS) in geosciences have attained an important position during the past 15 years. However, operational GPS time series are inhomogeneous due to numerous improvements in modeling and processing. Therefore, the interpretation of these series is difficult. In view of these deficiencies, more than 11 years of observations of a global GPS tracking network have been homogeneously reprocessed. Station coordinates troposphere and ionosphere parameters, satellite orbits and Earth orientation parameters have been estimated. After introducing the processing strategies and models, selected results of this reprocessing effort are discussed. The improved quality of the reprocessed time series is demonstrated by internal consistency tests, comparisons with other GPS solutions as well as solutions of the space geodetic techniques VLBI and SLR.
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Scientific applications of the Global Positioning System (GPS) in geosciences have attained an important position during the past 15 years. However, operational GPS time series are inhomogeneous due to numerous improvements in modeling and processing. Therefore, the interpretation of these series is difficult. In view of these deficiencies, more than 11 years of observations of a global GPS tracking network have been homogeneously reprocessed. Station coordinates troposphere and ionosphere param...
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