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http://hdl.handle.net/2122/4220
Authors: | Crocetto, N.* Pingue, F.* Ponte, S.* Pugliano, G.* Sepe, V.* |
Title: | Ionospheric error analysis in gps measurements | Journal: | Annals of Geophysics | Series/Report no.: | 4/51 (2008) | Publisher: | INGV | Issue Date: | Aug-2008 | Keywords: | Differential GPS error sources ionospheric errors carrier-phase positioning Geometry-Free Linear Combination RTK GPS |
Subject Classification: | 04. Solid Earth::04.03. Geodesy::04.03.07. Satellite geodesy | Abstract: | The results of an experiment aimed at evaluating the effects of the ionosphere on GPS positioning applications are presented in this paper. Specifically, the study, based upon a differential approach, was conducted utilizing GPS measurements acquired by various receivers located at increasing inter-distances. The experimental research was developed upon the basis of two groups of baselines: the first group is comprised of "short" baselines (less than 10 km); the second group is characterized by greater distances (up to 90 km). The obtained results were compared either upon the basis of the geometric characteristics, for six different baseline lengths, using 24 hours of data, or upon temporal variations, by examining two periods of varying intensity in ionospheric activity respectively coinciding with the maximum of the 23 solar cycle and in conditions of low ionospheric activity. The analysis revealed variations in terms of inter-distance as well as different performances primarily owing to temporal modifications in the state of the ionosphere. |
Appears in Collections: | Annals of Geophysics Article published / in press |
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