A regional ionospheric TEC mapping technique over China and adjacent areas: GNSS data processing and DINEOF analysis

	A regional ionospheric TEC mapping technique over China and adjacent areas: GNSS data processing and DINEOF analysis
	Ercha, A.; Huang, WenGeng; Liu, SiQing; Shi, LiQin; Gong, JianCun; Chen, YanHong; Shen, Hua
刊名	Science China Information Sciences
	2015
ISSN号	1674-733X
英文摘要	A technique is developed to derive two-dimensional maps of total electron content (TEC) over China and adjacent areas using Global Navigation Satellite System (GNSS) data from the Crustal Movement Observation Network of China (CMONOC) and the International Global Navigation Satellite System Service (IGS). A revised self-calibration of pseudo-range errors (SCORE) algorithm is used to derive the TEC and to determine the Differential Code Biases (DCBs) simultaneously. The accuracy and validity of this technique is verified in two ways. Firstly, the estimated TEC is compared with the results derived using DCBs from Center for Orbit Determination of Europe (CODE) under different solar activity conditions and seasons; secondly, sample TEC along the receiver-to-satellite ray paths are simulated by NeQuick model and are reprocessed by this TEC derivation technique to make the accuracy test. Two-dimensional maps of vertical TEC of ionospheric pierce points (IPPs) are obtained accordingly with a time resolution of 30 s. The data interpolating empirical orthogonal functions (DINEOF) technique is then used to make the extrapolation for the unknown or missing data points. The optimal EOF modes for data reconstruction are specified via cross-validation method. The regional TEC distribution over China and adjacent areas is scaled into grid size of 1° × 1° for each 5 min, which can well reflect the characteristic of large-scale regional variations and temporal evolution as well as the small-scale local features of ionosphere. © 2015 Science China Press and Springer-Verlag Berlin Heidelberg
收录类别	EI
语种	英语
内容类型	期刊论文
源URL	[http://ir.nssc.ac.cn/handle/122/5081]
专题	国家空间科学中心_空间环境部
推荐引用方式 GB/T 7714	Ercha, A.,Huang, WenGeng,Liu, SiQing,et al. A regional ionospheric TEC mapping technique over China and adjacent areas: GNSS data processing and DINEOF analysis[J]. Science China Information Sciences,2015.
APA	Ercha, A..,Huang, WenGeng.,Liu, SiQing.,Shi, LiQin.,Gong, JianCun.,...&Shen, Hua.(2015).A regional ionospheric TEC mapping technique over China and adjacent areas: GNSS data processing and DINEOF analysis.Science China Information Sciences.
MLA	Ercha, A.,et al."A regional ionospheric TEC mapping technique over China and adjacent areas: GNSS data processing and DINEOF analysis".Science China Information Sciences (2015).