Acta Geodaetica et Geophysica Hungarica
Volume/Issue:
Volume 37: Issue 2-3

Ionospheric data combination as a way to improve electron density estimations

Authors:
M. García-Fernández Group of Astronomy and Geomatics, Universitat Polit?cnica de Catalunya (gAGE/UPC), Department of Applied Mathematics IV Campus Nord module C3, c/Jordi Girona 1-3, 08034 Barcelona, Spain

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M. Hernández-Pajares Group of Astronomy and Geomatics, Universitat Polit?cnica de Catalunya (gAGE/UPC), Department of Applied Mathematics IV Campus Nord module C3, c/Jordi Girona 1-3, 08034 Barcelona, Spain

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J. M. Juan Group of Astronomy and Geomatics, Universitat Polit?cnica de Catalunya (gAGE/UPC), Department of Applied Mathematics IV Campus Nord module C3, c/Jordi Girona 1-3, 08034 Barcelona, Spain

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et al.
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Pages:
203–211
Online Publication Date:
22 Jul 2005
Publication Date:
01 May 2002
Article Category:
Journal Article
DOI:
https://doi.org/10.1556/ageod.37.2002.2-3.9
Keywords:
GPS; GPS; ionosonde; Abel inversion; data assimilation; electron density 3D description; GPSMET; separability assumption; spherical symmetry
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Several approaches have been made in the context of data assimilation in order to improve the estimates of electron density. The key point is to combine different types of data that offer complementary information, thus allowing to obtain a three dimensional description of the electronic content of the ionosphere. In this paper a data assimilation scheme will be proposed in which the complementarity of information will be given by the ground GPS data (horizontal variation) and vertical profiles  derived from ionosonde data (vertical variation). The results of this assimilation scheme will be verified by an external source of data, the GPS data gathered from receiver onboard GPSMET, a low earth orbiter at 750km. This comparison will show the feasability of this assimilation scheme. Moreover it will be shown how this method is able to provide with valuable information about the topside ionosphere by means of comparison with the vertical profiles retrieved from Radio Occultations using  Abel inversion. To do this  the approach of Abel inversion based on a separability hypothesis will be explained, and it will be compared with the classical approach that assumes spherical symmetry.

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Cover Acta Geodaetica et Geophysica Hungarica
Acta Geodaetica et Geophysica Hungarica
Print ISSN:
1217-8977
Online ISSN:
1587-1037

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Acta Geodaetica et Geophysica
Language English
Size B5
Year of
Foundation		 2013
Volumes
per Year		 1
Issues
per Year		 4
Founder Magyar Tudományos Akadémia
Founder's
Address		 H-1051 Budapest, Hungary, Széchenyi István tér 9.
Publisher Akadémiai Kiadó Springer
Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 2213-5812 (Print)
ISSN 2213-5820 (Online)

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