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
Abstract
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/ | ||||||||||||||||
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Document Type: | Article | ||||||||||||||||
Title: | Positioning performance of the Neustrelitz total electron content model driven by Galileo Az coefficients | ||||||||||||||||
Authors: |
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Date: | June 2022 | ||||||||||||||||
Journal or Publication Title: | GPS Solutions | ||||||||||||||||
Refereed publication: | Yes | ||||||||||||||||
Open Access: | Yes | ||||||||||||||||
Gold Open Access: | No | ||||||||||||||||
In SCOPUS: | Yes | ||||||||||||||||
In ISI Web of Science: | Yes | ||||||||||||||||
Volume: | 26 | ||||||||||||||||
DOI: | 10.1007/s10291-022-01278-4 | ||||||||||||||||
Publisher: | Springer | ||||||||||||||||
ISSN: | 1080-5370 | ||||||||||||||||
Status: | Published | ||||||||||||||||
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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