干旱区生态环境知识资源中心(Arid): Causal insights into GPS precision variability: an investigation into the ionospheric impact on GPS measurements throughout the solar cycle

Arid

DOI	10.4430/bgo00438
	Causal insights into GPS precision variability: an investigation into the ionospheric impact on GPS measurements throughout the solar cycle
	Saracoglu, A.
通讯作者	Saraçoglu, A
来源期刊	BULLETIN OF GEOPHYSICS AND OCEANOGRAPHY
ISSN	2785-339X
EISSN	2785-2970
出版年	2024
卷号	65 期号:1 页码:77-86
英文摘要	This research paper investigates the influence of solar activity on GPS measurement accuracy, and, more specifically, its interaction with the ionosphere. The study spanned from 2002 to 2018, coinciding with the 11-year solar cycle. The focus was to assess the effects of solar activity on GPS time series: north, east, and vertical components. Monthly throughout this period, three-day GPS campaign data, encompassing the solar cycle, were collected. Using a global network of 40 GPS stations from the International GNSS Service, the study categorised stations into six regions based on climate zones, so as to address regional differences. Data were further segmented into 8-and 12-hour periods, thus creating new data sets to examine variability in measurement accuracy. The Precise Point Positioning module of the GIPSY-OASIS software (developed by NASA's Jet Propulsion Laboratory) was employed to analyse the data. The research also explored the relationship between solar activity, quantified by the number of sunspots, and the correlation between the phase ambiguity resolution ratio and standard error of GPS coordinate components. The results highlighted a significant inverse correlation between solar activity and GPS signals, ranging from moderately strong (-0.50) to relatively strong (-0.80), hence implying that greater solar activity corresponds to lower GPS accuracy. This phenomenon results from ionospheric effects on signal propagation, which induce errors such as delays and phase fluctuations in GPS signals.
英文关键词	GPS PPP positioning accuracy ionosphere solar activity.
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001130835400001
WOS类目	Geochemistry & Geophysics
WOS研究方向	Geochemistry & Geophysics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/403095
推荐引用方式 GB/T 7714	Saracoglu, A.. Causal insights into GPS precision variability: an investigation into the ionospheric impact on GPS measurements throughout the solar cycle[J],2024,65(1):77-86.
APA	Saracoglu, A..(2024).Causal insights into GPS precision variability: an investigation into the ionospheric impact on GPS measurements throughout the solar cycle.BULLETIN OF GEOPHYSICS AND OCEANOGRAPHY,65(1),77-86.
MLA	Saracoglu, A.."Causal insights into GPS precision variability: an investigation into the ionospheric impact on GPS measurements throughout the solar cycle".BULLETIN OF GEOPHYSICS AND OCEANOGRAPHY 65.1(2024):77-86.

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