Cander L R. 2006. Spatial correlation of foF2 and TEC under quiet and disturbed ionospheric conditions. Geophysical Research Abstracts, 8, 01103.
[2]
Guo P. 2006. GPS radio occultation technique and CHAMP occultation data retrieval (in Chinese). Shanghai: Shanghai Astronomical Observatory, Chinese Academy of Sciences.
[3]
Liu X C, Shen J, Li Y G. 2010. A generalized auto-regressive conditional heteroskedasticity model for system marginal price forecasting based on weighted double gaussian distribution. Power System Technology (in Chinese), 34(1): 139-144.
[4]
Schunk R W, Scherliess L, Sojka J J, et al. 2004. Global assimilation of ionospheric measurements (GAIM). Radio Sci., 39(1): RS1S02, doi: 10.1029/2002RS002794.
[5]
Wang Y, Lin Z X, Yu T. 2011. An OI-based assimilation method of vertical ionospheric electron density profile over Xiamen. Chin. J. Space Sci. (in Chinese), 31(6): 771-777.
[6]
Wu X C. 2008. Radio occultation technique for ionosphere detection (in Chinese)[Ph. D. thesis]. Beijing: National Space Science Center, Chinese Academy of Sciences.
[7]
Xiong N L, Tang C C, Li X J. 1999. Introduction to Ionospheric Physics (in Chinese). Wuhan: Wuhan University Press.
[8]
Xu J S, Zou Y H, Ma S Y. Time-dependent 3-D computerized ionospheric tomography with ground-based GPS network and occultation observations. Chinese J. Geophys. (in Chinese), 48(4): 759-767.
[9]
Yue X A. 2008. Modeling and data assimilation of mid-and low-latitude ionosphere (in Chinese)[Ph. D. thesis]. Beijing: Chinese Academy of Sciences.
[10]
Zhang Q W, Guo J S, Zhang G L, et al. 1995. Mid-and low-latitude ionospheric responses to different type of magnetic storm. Chinese J. Geophys. (Acta Geophysica Sinica) (in Chinese), 38(5): 581-589.
[11]
Angling M J, Cannon P S. 2004. Assimilation of radio occultation measurements into background ionospheric models. Radio Sci., 39(1), doi: 10.1029/2002RS002819.
[12]
Bust G S, Garner T W, Gaussiran II T L. 2004. Ionospheric Data Assimilation Three-Dimensional (IDA3D): A global, multisensor, electron density specification algorithm. Journal of Geophysical Research, 109(A11): A11312, doi: 10.1029/2003JA010234.
[13]
Derber J, Rosati A. 1989. A global oceanic data assimilation system. J. Phys. Ocean., 19(9): 1337-1347.
[14]
Gail W B, Prag A B, Coco D S, et al. 1993. A statistical characterization of local mid-latitude total electron content. Journal of Geophysical Research, 98(A9): 15717-15727.
[15]
He M S. 2011. A number of studies of ionospheric structural on the base of COSMIC occultation observations (in Chinese)[Ph. D. thesis]. Beijing: Institute of Geology and Geophysics: Chinese Academy of Sciences.
[16]
Howe B M, Runciman K, Secan J A. 1998. Tomography of the ionosphere: Four-dimensional simulations. Radio Sci., 33(1): 109-128.
[17]
Yu T, Wang Y G, Mao T, et al. 2011. Ionospheric Data Assimilation and Inversion Experiment with Using the Single Ionosonde and GPS Data (in Chinese). Xiamen: Chinese Meteorological Society 28th Annual Meeting.
[18]
Yu X, Wan W X, Liu L B, et al. 2007. A study of correlation distance of the day to day variability of F2 layer peak electron density over Europe. Chinese J. Geophys. (in Chinese), 50(5): 1283-1288.
[19]
Yuan Y B. 2002. Study on theories and methods of correcting ionospheric delay and monitoring ionosphere based on GPS (in Chinese)[Ph. D. thesis]. Wuhan: Institude of Geodesy and Geophysics: Chinese Academy of Sciences.
[20]
Zhuang Z R. 2004. Study of the statistical structure of background errors and its impact on 3D-Var (in Chinese)[Ph. D. thesis]. Beijing: Chinese Academy of Meteorological Sciences.