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Fast Ionospheric Correction Algorithm for Galileo Single Frequency Users

Hoque, Mohammed Mainul and Jakowski, Norbert and Cahuasqui Llerena, Juan Andres (2021) Fast Ionospheric Correction Algorithm for Galileo Single Frequency Users. In: 2020 European Navigation Conference, ENC 2020. The European Navigation Conference ENC 2020, Dresden, Germany. doi: 10.23919/ENC48637.2020.9317502. ISBN 978-394497627-3.

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Official URL: https://ieeexplore.ieee.org/document/9317502


We propose an alternative ionospheric correction approach for single frequency Galileo users. In the proposed approach the broadcasted coefficients are used to drive the Neustrelitz Total Electron Content (TEC) Model (NTCM) instead of the standard Galileo ionosphere model NeQuick-G. The NTCM-based correction approach uses 12 model coefficients, the solar radio flux index F10 and a few empirically fixed parameters. The required TEC values can be computed at any location and time without using any spatial or temporal interpolation of parameters. This makes NTCM very fast running in operational applications. The presented approach performs well when fed with the same Az parameter as NeQuick-G. The global performance analysis with reference Vertical Total Electron Content (VTEC) data from the International GNSS Service (IGS) shows that the performance of the NTCM was better than that of NeQuick-G. A comparison with reference Slant TEC (STEC) data shows that there is no significant difference between both models performance in terms of residual statistics such as Root Mean Square (RMS), mean and Standard Deviation (STD). Here, an improved mapping function could even reduce corresponding errors when transforming NTCM derived VTEC to STEC values used for comparison. When comparing the computational time, it is found that the NTCM use is in average 65 times faster than the NeQuick-G operation.

Item URL in elib:https://elib.dlr.de/148774/
Document Type:Conference or Workshop Item (Speech)
Title:Fast Ionospheric Correction Algorithm for Galileo Single Frequency Users
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Jakowski, NorbertUNSPECIFIEDhttps://orcid.org/0000-0003-3174-2624UNSPECIFIED
Cahuasqui Llerena, Juan AndresUNSPECIFIEDhttps://orcid.org/0000-0002-1783-0823UNSPECIFIED
Journal or Publication Title:2020 European Navigation Conference, ENC 2020
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
Keywords:Ionospheric Correction Algorithm, Galileo Single Frequency Users, NTCM G, GNSS, TEC
Event Title:The European Navigation Conference ENC 2020
Event Location:Dresden, Germany
Event Type:international Conference
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Communication, Navigation, Quantum Technology
DLR - Research area:Raumfahrt
DLR - Program:R KNQ - Communication, Navigation, Quantum Technology
DLR - Research theme (Project):R - Ionosphere
Location: Neustrelitz
Institutes and Institutions:Institute for Solar-Terrestrial Physics > Space Weather Observation
Deposited By: Hoque, Mohammed Mainul
Deposited On:24 Feb 2022 10:18
Last Modified:27 Oct 2023 15:29

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