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Positioning performance of the NTCM ionospheric model driven by Galileo Az coefficients

Cahuasqui Llerena, Juan Andres and Hoque, Mohammed Mainul and Jakowski, Norbert (2021) Positioning performance of the NTCM ionospheric model driven by Galileo Az coefficients. In: 17th European Space Weather Week. Institute of Physics IOP. 17th European Space Weather Week, 25-29 Oct 2021, Glasgow, UK.

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Official URL: http://esww17.iopconfs.org/Home

Abstract

The interaction of GNSS signals with the ionosphere may cause link related errors of up to 100 m at GNSS frequencies in the L-band. To aid single frequency applications, the Neustrelitz Total Electron Content Model driven by Galileo ionization coefficients (NTCM-GlAzpar) has been proposed as an adequate solution to mitigate propagation errors. For the first time, we present a global statistical validation of the NTCM-GlAzpar model in the position domain by comparing its results with the results of the Galileo NeQuick and GPS Klobuchar models. For this purpose, we used the GNSS analysis tool gLAB in the Standard Point Positioning (SPP) technique. The used GNSS data corresponds to a one-month period of perturbed solar activity (December 2014) and one-month period of quiet conditions (December 2019). We achieved a worldwide coverage with up to 73 IGS stations. The statistical analysis of the hourly mean 3D position error shows that NTCM-GlAzpar outperforms the Klobuchar model. Also, the results achieved with NTCM-GlAzpar are slightly better or comparable to the results obtained with NeQuickG. The performance of NTCM-GlAzpar decreases slightly for conditions of reduced solar activity – at night time, higher latitudes and low perturbations. Nevertheless, simple software adaptations and a low computational time make NTCM-GlAzpar an alternative practicable algorithm to improve the accuracy of positioning applications.

Item URL in elib:https://elib.dlr.de/145881/
Document Type:Conference or Workshop Item (Poster)
Title:Positioning performance of the NTCM ionospheric model driven by Galileo Az coefficients
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Cahuasqui Llerena, Juan AndresAndres.Cahuasqui (at) dlr.dehttps://orcid.org/0000-0002-1783-0823
Hoque, Mohammed MainulMainul.Hoque (at) dlr.deUNSPECIFIED
Jakowski, NorbertNorbert.Jakowski (at) dlr.dehttps://orcid.org/0000-0003-3174-2624
Date:October 2021
Journal or Publication Title:17th European Space Weather Week
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Publisher:Institute of Physics IOP
Status:Published
Keywords:GNSS, ionospheric correction, NTCM, gLAB tool, single frequency positioning
Event Title:17th European Space Weather Week
Event Location:Glasgow, UK
Event Type:international Conference
Event Dates:25-29 Oct 2021
Organizer:Institute of Physics IOP
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
DLR - Research theme (Project):R - Solar-Terrestrial Physics SO
Location: Neustrelitz
Institutes and Institutions:Institute for Solar-Terrestrial Physics > Space Weather Observation
Deposited By: Cahuasqui Llerena, Dr. Juan Andres
Deposited On:02 Dec 2021 07:15
Last Modified:01 Feb 2022 03:00

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