Sibsonian and non-Sibsonian natural neighbour interpolation of the total electron content value
Visualitza/Obre
Cita com:
hdl:2117/112637
Tipus de documentArticle
Data publicació2017-03
Condicions d'accésAccés obert
Tots els drets reservats. Aquesta obra està protegida pels drets de propietat intel·lectual i
industrial corresponents. Sense perjudici de les exempcions legals existents, queda prohibida la seva
reproducció, distribució, comunicació pública o transformació sense l'autorització del titular dels drets
Abstract
In radioastronomy the interferometric measurement between radiotelescopes located relatively close to each other helps removing ionospheric effects. Unfortunately, in case of networks such as LOw Frequency ARray (LOFAR), due to long baselines (currently up to 1500 km), interferometric methods fail to provide sufficiently accurate ionosphere delay corrections. Practically it means that systems such as LOFAR need external ionosphere information, coming from Global or Regional Ionospheric Maps (GIMs or RIMs, respectively). Thanks to the technology based on Global Navigation Satellite Systems (GNSS), the scientific community is provided with ionosphere sounding virtually worldwide. In this paper we compare several interpolation methods for RIMs computation based on scattered Vertical Total Electron Content measurements located on one thin ionospheric layer (Ionospheric Pierce Points—IPPs). The results of this work show that methods that take into account the topology of the data distribution (e.g., natural neighbour interpolation) perform better than those based on geometric computation only (e.g., distance-weighted methods).
CitacióKotulak, K., Fron, A., Krankowski, A., Olivares-Pulido, G., Hernandez, M. Sibsonian and non-Sibsonian natural neighbour interpolation of the total electron content value. "Acta geophysica", Març 2017, vol. 65, núm. 1, p. 13-28.
ISSN1895-6572
Versió de l'editorhttp://link.springer.com/article/10.1007/s11600-017-0003-3
Fitxers | Descripció | Mida | Format | Visualitza |
---|---|---|---|---|
Kotulak_et_al.S ... alue.Acta_Geophys.2017.pdf | Open access article | 3,273Mb | Visualitza/Obre |