Automatic scaling of F2-layer parameters from ionograms based on the empirical orthogonal function (EOF) analysis of ionospheric electron density

CORC > 武汉物理与数学研究所 > 中国科学院武汉物理与数学研究所 > 2011年以前论文发表（包括2011年）

	Automatic scaling of F2-layer parameters from ionograms based on the empirical orthogonal function (EOF) analysis of ionospheric electron density
	Ding, Zonghua ; Ning, Baiqi ; Wan, Weixing ; Liu, Libo
刊名	EARTH PLANETS AND SPACE
	2007
卷号	59 期号:1 页码:51-58
关键词	ionogram automatic scaling electron density profile EOF analysis
英文摘要	In this paper we apply a method based on empirical orthogonal function (EOF) analysis to automatically scale the F2-layer parameters obtained from ionograms. For a given location, the F layer's height profiles of ionospheric electron density are represented as an EOF series with adjustable coefficients derived from the EOF analysis of electron density profiles obtained from the International Reference Ionosphere (IRI-2001) model or measured ionograms. By adjusting the coefficients of the series and combining image matching technique, we were able to construct a calculated trace that approximates as close as possible the observed ionograrn F2 trace. The corresponding parameters are then known, including the critical frequency (foF2), peak height (hmF2) and maximum usable frequency [MUF(3000)F2] of the F2 layer. Polarization information is unnecessary; only an amplitude array is essential. Consequently, this method is universal and can be applied to many kinds of ionograms (even the film ionograms after an appropriate conversion of the information to the digital form from the film ionogram). To evaluate the acceptability of the obtained parameters, large numbers of foF2, hmF2 and MUF(3000)F2 values from the manually scaled ionograms at Wuhan (114.4 degrees E, 30.5 degrees N), China are compared with those from automatically scaled ionograms by the Automatic Real Time Ionogram Scaler with True height (ARTIST) and our method. The results indicate that the scaled parameters are acceptable and stable.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Geosciences, Multidisciplinary
研究领域[WOS]	Geology
关键词[WOS]	DIGITAL IONOGRAMS ; PROFILES
收录类别	SCI
语种	英语
WOS记录号	WOS:000245476200007
公开日期	2015-10-13
内容类型	期刊论文
源URL	[http://ir.wipm.ac.cn/handle/112942/7933]
专题	武汉物理与数学研究所_2011年以前论文发表（包括2011年）
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Beijing, Peoples R China 2.Chinese Acad Sci, Wuhan Inst Phys & Math, Wuhan, Peoples R China 3.Chinese Acad Sci, Grad Sch, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Ding, Zonghua,Ning, Baiqi,Wan, Weixing,et al. Automatic scaling of F2-layer parameters from ionograms based on the empirical orthogonal function (EOF) analysis of ionospheric electron density[J]. EARTH PLANETS AND SPACE,2007,59(1):51-58.
APA	Ding, Zonghua,Ning, Baiqi,Wan, Weixing,&Liu, Libo.(2007).Automatic scaling of F2-layer parameters from ionograms based on the empirical orthogonal function (EOF) analysis of ionospheric electron density.EARTH PLANETS AND SPACE,59(1),51-58.
MLA	Ding, Zonghua,et al."Automatic scaling of F2-layer parameters from ionograms based on the empirical orthogonal function (EOF) analysis of ionospheric electron density".EARTH PLANETS AND SPACE 59.1(2007):51-58.