ORBi: Bidaine Benoît - Assessment of the NeQuick model at mid-latitudes using GNSS TEC and ionosonde data

Reference : Assessment of the NeQuick model at mid-latitudes using GNSS TEC and ionosonde data


	Document type :	Scientific journals : Article
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Earth sciences & physical geography Engineering, computing & technology : Electrical & electronics engineering
	To cite this reference:	http://hdl.handle.net/2268/26082

Title :	Assessment of the NeQuick model at mid-latitudes using GNSS TEC and ionosonde data
Language :	English
Author, co-author :	Bidaine, Benoît [Université de Liège - University of Liège - ULg / FNRS > Département de géographie - Department of Geography > Unité de Géomatique - Geomatics Unit > >]
	Warnant, René [Institut Royal Météorologique - IRM - Royal Meteorological Institute - RMI > > > >]
Publication date :	3-May-2010
Journal title :	Advances in Space Research
Publisher :	Pergamon Press
Volume :	45
Issue/season :	9
Special issue title :	Recent Advances in Space Weather Monitoring, Modelling and Forecasting
Pages :	1122-1128
Audience :	International
ISSN :	0273-1177
City :	Oxford
Country :	United Kingdom
Keywords :	[en] ionosphere ; Total Electron Content (TEC) ; NeQuick ; topside ; mitigation ; Global Navigation Satellite Systems (GNSS)
	[fr] Géodésie et GNSS
Abstract :	[en] The modelling of the Total Electron Content (TEC) plays an important role in global navigation satellite systems (GNSS) accuracy, especially for single-frequency receivers, the most common ones constituting the mass market. For the latter and in the framework of Galileo, the NeQuick model has been chosen for correcting the ionospheric error contribution and will be integrated into a global algorithm providing the users with daily updated information. In order to reach the ionosphere error correction level objective, the model itself as well as its use for Galileo are investigated. In our comparison process, we take advantage of various ionosphere data from several European stations (Dourbes in Belgium, El Arenosillo and Roquetes in Spain) where ionosonde and GPS TEC data are available for different solar activity levels. These data allow us to study NeQuick representation of the ionosphere at mid-latitudes. Constraining the model with ionosonde measurements, we investigate the difference between GPS-derived vertical TEC and corresponding values from NeQuick for a high solar activity level (year 2002). With this approach, we reach residual errors of less than 20% in standard deviation. We especially highlight the improvements from the latest (second) version of NeQuick and show the critical importance of the topside formulation.
Target :	Researchers ; Professionals ; Students
Permalink :	http://hdl.handle.net/2268/26082
DOI :	10.1016/j.asr.2009.10.010

File(s) associated to this reference

Fulltext file(s):

	File	Commentary	Version	Size	Access
Open access	Bidaine_2009_NeQuickMidLat_ASR.pdf		Author postprint	496.04 kB	View/Open

All documents in ORBi are protected by a user license.

Dspace v1.5