Preliminary analysis of error characteristics in atmospheric inversion of GPS radio occultation

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）

	Preliminary analysis of error characteristics in atmospheric inversion of GPS radio occultation
	Gong Xiao-Yan ; Hu Xiong ; Wu Xiao-Cheng ; Zhang Xun-Xie
刊名	CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
	2007-07-01
卷号	50 期号:4 页码:1017-1029
关键词	GPS atmospheric occultation the Earth's oblateness ionosphere calibration inversion method of geometric optics inversion error
英文摘要	GPS radio atmospheric occultation technique can measure the profiles of the global meteorological fields of the neutral atmosphere I from which we can obtain the atmosphere refractivity, pressure, density I temperature, and water vapor. The basic theory of the technique is the inversion method of Abel integration. Some factors such as the Earth's oblateness, the ionospheric dalay, the large-scale horizontal refractive index gradients in the atmosphere, and atmospheric multipath can influence the precision of retrieval. In this paper, we discuss the effect of the Earth's oblateness and ionosphere on the retrieval, and analyze the result of the local curvature correction and the ionosphere calibration. The excess phase delay is simulated by using the observed CHAMP orbit data, the ionospheric model and experiential atmospheric model, and the method of 3D-tracing technology. Inversion errors of the height from 0 to 60 km are obtained by comparison of the retrieval parameter profile and model profile, and studied by using statistical methods for several occultations. The result shows that local curvature calibration and ionosphere calibration are very important for GPS occultation inversion of high precision. Ionospheric residual influence is the main reason of restricting the retrieval precision from 30 km to 60 km, and it is necessary to develop new ionosphere calibration methods for atmosphere inversion of higher precision.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Geochemistry & Geophysics
研究领域[WOS]	Geochemistry & Geophysics
关键词[WOS]	GLOBAL POSITIONING SYSTEM ; RETRIEVAL ; PROFILES
收录类别	SCI
语种	英语
WOS记录号	WOS:000248343500009
公开日期	2015-09-08
内容类型	期刊论文
源URL	[http://ir.wipm.ac.cn/handle/112942/7816]
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, Ctr Space Sci & Appl Res, Beijing 100080, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Wuhan Inst Phys & Math, Wuhan 430071, Peoples R China
推荐引用方式 GB/T 7714	Gong Xiao-Yan,Hu Xiong,Wu Xiao-Cheng,et al. Preliminary analysis of error characteristics in atmospheric inversion of GPS radio occultation[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2007,50(4):1017-1029.
APA	Gong Xiao-Yan,Hu Xiong,Wu Xiao-Cheng,&Zhang Xun-Xie.(2007).Preliminary analysis of error characteristics in atmospheric inversion of GPS radio occultation.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,50(4),1017-1029.
MLA	Gong Xiao-Yan,et al."Preliminary analysis of error characteristics in atmospheric inversion of GPS radio occultation".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 50.4(2007):1017-1029.