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Authors: Barzaghi, R.* 
Borghi, A.* 
Crespi, M.* 
Pietrantonio, G.* 
Riguzzi, F.* 
Title: GPS Permanent Network Solution: the Impact of Temporal Correlations
Issue Date: 2004
Series/Report no.: /127 (2004)
Keywords: GPS permanent network,temporal correlations, autocovariance functions
Subject Classification04. Solid Earth::04.03. Geodesy::04.03.07. Satellite geodesy 
04. Solid Earth::04.03. Geodesy::04.03.08. Theory and Models 
Abstract: . In this work we analysed the time series of daily solutions of 4 Italian GPS permanent stations with the aim of investigating the presence of temporal correlations and their impact on the estimation of weekly solution and velocity field precisions. We found that precisions are remarkably lower when temporal correlations are considered; in particular, the mean horizontal precisions of weekly solutions are up to 5 times lower and the horizontal velocity precisions are about 1.5-2 times lower. This topic has 2 relevant applications: the assessment of the quality of a reference system maintenance by GPS permanent stations and the coordinate differences significance test for geodynamical applications.
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