Using GPS-TEC data to calibrate VTEC computed with the IRI model over Nigeria |
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| Authors: | Daniel Okoh Lee-Anne McKinnell Pierre Cilliers Pius Okeke |
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| Institution: | 1. Center for Basic Space Science, P.O. Box 3238, University of Nigeria, Nsukka, 410001 Enugu State, Nigeria;2. Physics and Astronomy Department, P.O. Box 3238, University of Nigeria, Nsukka, 410001 Enugu State, Nigeria;3. South African National Space Agency (SANSA) Space Science, P.O. Box 32, Hermanus 7200, South Africa |
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| Abstract: | This paper presents the development of a Total Electron Content (TEC) map for the Nigerian ionosphere. In this work, TEC measurements obtained from the AFRL-SCINDA GPS (Air Force Research Laboratory-Scintillation Network Decision Aid, Global Positioning System) equipment installed at Nsukka (6.87°N, 7.38°E) are used to adapt the International Reference Ionosphere (IRI) model for the Nigerian Ionosphere. The map is being developed as a computer program (implemented in the MATLAB programming language) that shows spatial and temporal representations of TEC for the Nigerian ionosphere. The method is aimed at showing how the IRI model can be used to estimate VTEC over wide areas by incorporating GPS measurements. This method is validated by using GPS VTEC data collected from a station in Ilorin (8.50°N, 4.55°E). |
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| Keywords: | Total Electron Content GPS TEC IRI TEC International Reference Ionosphere Nsukka Ilorin |
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