Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010jass...27..359c&link_type=abstract
Journal of Astronomy and Space Sciences. Vol. 27, no. 4, 359-366
Astronomy and Astrophysics
Astronomy
Global Positioning System, Global Ionosphere Model, Spherical Harmonic Expansion, Total Electron Content
Scientific paper
In this study, we developed a global ionosphere model based on measurements from a worldwide network of global positioning system (GPS). The total number of the international GPS reference stations for development of ionospheric model is about 100 and the spherical harmonic expansion approach as a mathematical method was used. In order to produce the ionospheric total electron content (TEC) based on grid form, we defined spatial resolution of 2.0 degree and 5.0 degree in latitude and longitude, respectively. Two-dimensional TEC maps were constructed within the interval of one hour, and have a high temporal resolution compared to global ionosphere maps which are produced by several analysis centers. As a result, we could detect the sudden increase of TEC by processing GPS observables on 29 October,2003 when the massive solar flare took place.
Cho Sung-Ki
Choi Byung-Kyu
Lee Woo Kyung
Park Jong-Uk
Park Pil-Ho
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