Geometric quality term for station-based total electron content estimation

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Published: Feb 24, 2016
DOI: https://doi.org/10.4401/ag-6803
Keywords:
Ionosphere, TEC, R-TEC, Quality parameter

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Murat Selim Çepni
University of Kocaeli, Department of Geomatic Engineering, Kocaeli,
Erman Şentürk
University of Kocaeli, Department of Geomatic Engineering, Kocaeli,

Abstract

Global ionospheric maps (GIMs) are still commonly used to represent total electron content (TEC). However, a large number of permanent GPS receivers provide significant data for monitoring ionosphere. The GIMs supply accurate TEC results, although spherical models are not able to fit local ionospheric perturbations as a source of local receiver data. Therefore, the use of station-based TEC computation becomes more preferred and convenient. The station-based TEC approach is established on weighting averaging or modeling vertical TECs. Using this approach to reveal ionospheric activity depends on geometric distribution of ionospheric piercing points (IPP). The most effective parameter for examination of station-based TEC estimation is a function of relative geometry between receiver and satellite. In this study, a quality term has been used to define, for TEC estimation according to distribution of IPPs, similar to geometric dilution of precision (GDOP). The quality term has been described for the first time in this field and it was named as R-TEC (reliability of total electron content).

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How to Cite
Çepni, M. S. and Şentürk, E. (2016) “Geometric quality term for station-based total electron content estimation”, Annals of Geophysics, 59(1), p. A0107. doi: 10.4401/ag-6803.
Issue
Vol. 59 No. 1 (2016)
Section
Physics of the Atmosphere

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