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Positioning performance of the Neustrelitz total electron content model driven by Galileo Az coefficients

Cahuasqui Llerena, Juan Andres and Hoque, Mohammed Mainul and Jakowski, Norbert (2022) Positioning performance of the Neustrelitz total electron content model driven by Galileo Az coefficients. GPS Solutions, 26 (93). Springer. doi: 10.1007/s10291-022-01278-4. ISSN 1080-5370.

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Official URL: https://link.springer.com/article/10.1007/s10291-022-01278-4


To aid single-frequency GNSS users, the Neustrelitz Total Electron Content Model (NTCM) has been proposed as an adequate solution to mitigate propagation errors besides the GPS Klobuchar and Galileo NeQuick models. Using the three effective ionization coefficients broadcast in the Galileo navigation message as driver parameters, the version NTCM-GlAzpar, in general, performs equal to or better than NeQuickG when compared to the total electron content domain. In this work, we performed a global statistical validation of the NTCM-GlAzpar model in the position domain by comparing its results with the results of the Klobuchar and NeQuickG models for the first time. For this purpose, we used the GNSS analysis tool gLAB and its customization capabilities in the Standard Point Positioning mode. The data used for model validation correspond to a one-month period of perturbed solar and geomagnetic activity (December 2014) and another one-month period of quiet conditions (December 2019). The data have a worldwide coverage with up to 73 IGS stations. The statistical analysis of the hourly average 3D position error shows that the root mean squared (RMS) values of the Klobuchar model are 6.71 and 2.75 m for the perturbed and quiet conditions, respectively, whereas the NeQuickG model has RMS values of 4.61 and 2.35 m. In comparison, the corresponding RMS values of 4.36 and 2.32 m of the NTCM-GlAzpar model confirm its better positioning performance for both periods. However, we identify also that the performance of NTCM-GlAzpar slightly worsens toward higher latitudes and at night local time. Simple software adaptations and a low computational cost make NTCM-GlAzpar an alternative practicable algorithm to improve the accuracy of GNSS single-frequency applications.

Item URL in elib:https://elib.dlr.de/188000/
Document Type:Article
Title:Positioning performance of the Neustrelitz total electron content model driven by Galileo Az coefficients
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Cahuasqui Llerena, Juan AndresUNSPECIFIEDhttps://orcid.org/0000-0002-1783-0823UNSPECIFIED
Hoque, Mohammed MainulUNSPECIFIEDhttps://orcid.org/0000-0001-5134-4901UNSPECIFIED
Jakowski, NorbertUNSPECIFIEDhttps://orcid.org/0000-0003-3174-2624UNSPECIFIED
Date:June 2022
Journal or Publication Title:GPS Solutions
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:Yes
Keywords:GNSS; gLAB tool; NTCM; Single-frequency positioning; Ionospheric correction
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, R - Ionosphere, R - GNSS Technologies and Services
Location: Neustrelitz
Institutes and Institutions:Institute for Solar-Terrestrial Physics > Space Weather Observation
Institute for Solar-Terrestrial Physics
Deposited By: Cahuasqui Llerena, Dr. Juan Andres
Deposited On:29 Aug 2022 09:34
Last Modified:28 Jun 2023 11:22

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