Reference : NeQuick: In-Depth Analysis and New Developments
Scientific congresses and symposiums : Paper published in a book
Physical, chemical, mathematical & earth Sciences : Earth sciences & physical geography
Engineering, computing & technology : Electrical & electronics engineering
http://hdl.handle.net/2268/1556
NeQuick: In-Depth Analysis and New Developments
English
Bidaine, Benoît mailto [Université de Liège - ULiège / FNRS > Département de Géographie - Departement of Geography > Unité de Géomatique - Geomatics Unit > > >]
Prieto-Cerdeira, Roberto [European Space Agency - ESA > Directorate of Technical and Quality Management - TEC > Wave Interaction and Propagation Section - TEC-EEP > > >]
Orus, Raul [European Space Agency - ESA > Directorate of Technical and Quality Management - TEC > Wave Interaction and Propagation Section - TEC-EEP > >]
Dec-2006
3rd ESA Workshop on Satellite Navigation User Equipment Technologies NAVITEC '2006
14
No
No
International
3rd ESA Workshop on Satellite Navigation User Equipment Technologies NAVITEC '2006
du 11 décembre 2006 au 13 décembre 2006
Agence Spatiale Européenne - European Space Agency - ESA
Noordwijk
Pays-Bas
[en] ionosphere ; model ; NeQuick ; TEC ; mitigation ; positioning ; GNSS ; Galileo ; single frequency
[fr] Géodésie et GNSS
[en] An empirical model called NeQuick has been selected for the modelling and correction of the ionospheric delay contribution in GALILEO single frequency receivers. The current baseline version of NeQuick for GALILEO is the one available in the International Telecommunication Union – Radiocommunication Sector (ITU-R) since 2001. From that time, several improvements have been proposed leading to the need of a better understanding and comparison of these different versions and an analysis of the weaknesses. Better results have been obtained by means of simpler ionosonde and profile parameters calculations, different topside formulation and new data files.
The interest of a newer version of NeQuick including the above-mentioned modifications is highlighted as its error behaviour towards latitude shows a better agreement with reality. Those modifications should be coupled to a less simplistic topside formulation involving several layers with appropriate transitions such as the proposal introduced in this paper. The need of a different treatment regarding the daily effective use of the model for GALILEO single frequency algorithm compared to a physical use (that uses monthly median underlying data) is addressed.
For the analysis and comparison of the different variants of the model, a software tool with a Graphical User Interface was developed. Preliminary comparisons for the physical use between different versions and also between modelled and measured data are presented. Such comparisons should be extended in the future for the effective use of the model.
Finally, the structure and analysis of the mentioned issues and the results of the different comparisons are shown. Also solutions or potential paths to investigate solutions are proposed.
Researchers ; Professionals
http://hdl.handle.net/2268/1556
http://www.congrex.nl/06c17/

File(s) associated to this reference

Fulltext file(s):

FileCommentaryVersionSizeAccess
Open access
Bidaine_2006_NeQuick_NAVITECS15.pdfAuthor postprint664.08 kBView/Open

Additional material(s):

File Commentary Size Access
Open access
Bidaine_2006_NeQuick_NAVITEC_sl.pdf1.67 MBView/Open

Bookmark and Share SFX Query

All documents in ORBi are protected by a user license.