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A Statistical Study and Modeling of the Ionospheric TEC and the Slab Thickness with Observations at Xinxiang, China

Wu Jian; Long Qili; Quan Kunhai (China Research Institute of Radiowave Propagation, Xinxiang 453003, China)  
The ionospheric slab thickness is deduced in this paper using the ionospheric TEC data obtained by receiving 136MHz signal from ETS-Ⅱ satellite beacon during 1982-1990 at Xinxiang,China, and corresponding monthly median value f0F2 from ionosonde observations. It is first devoted to analysis of differences of the diurnal variations, seasonal variations and variations with solar activity between observed TEC, the slab thickness and f0F2. Assuming a parabolic relation between the slab thickness and solar activity, a model of the slab thickness is then set up by fitting the parabolic function to observed slab thickness data with the least-square method. Comparisons with IRI and CRI models show that the slab thickness model can give more precise results than the IRI and the CRI at higher solar activity.
【CateGory Index】: TN011.2
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