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http://dx.doi.org/10.5140/JASS.2006.23.3.237

DEVELOPMENT OF IONOSPHERIC TOMOGRAPHY MODEL USING GPS  

Choi Byung-Kyu (Space Geodesy Research Group, Korea Astronomy & Space Science Institute)
Park Jong-Uk (Space Geodesy Research Group, Korea Astronomy & Space Science Institute)
Lee Sang-Jeong (Department of Electronics Engineering, ChungNam National University)
Publication Information
Journal of Astronomy and Space Sciences / v.23, no.3, 2006 , pp. 237-244 More about this Journal
Abstract
We produced the electron density distribution in the ionosphere over South Korea using the data from nine permanent GPS (Global Positioning System) stations which have been operated by KASI (Korea Astronomy and Space Science Institute). The dual-frequency GPS receiver data was used to precisely estimate the electron density in the ionosphere and we obtained the precise electron density profile based on two-dimensional TEC (Total Electron Contents). We applied ART (Algebraic Reconstruction Technique), which is one of the most commonly used algorithms to develop the tomography model. This paper presented the electron density distribution over South Korea with time. We compared with the electron density profiles derived from the GPS tomography reconstruction, Ionosonde measurement data obtained by observations, and the IRI-2001 values. As a result, the electron density profile by GPS reconstruction was in excellent agreement with the electron density profile obtained by Ionosonde measurement data.
Keywords
ionosphere; GPS; total electron content; space weather;
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