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https://doi.org/10.21256/zhaw-29973| Publication type: | Conference paper |
| Type of review: | Peer review (publication) |
| Title: | Investigating the accuracy of code based DGNSS as a function of correction data age, baseline length, and ionospheric activity |
| Authors: | Moser, Simon Sarperi, Luciano Felux, Michael |
| et. al: | No |
| DOI: | 10.33012/2024.19491 10.21256/zhaw-29973 |
| Proceedings: | Proceedings of the 2024 International Technical Meeting of The Institute of Navigation |
| Page(s): | 272 |
| Pages to: | 286 |
| Conference details: | International Technical Meeting of The Institute of Navigation (ION ITM), Long Beach, USA, 23-25 January 2024 |
| Issue Date: | Feb-2024 |
| Publisher / Ed. Institution: | Institute of Navigation |
| Publisher / Ed. Institution: | Manassas |
| ISBN: | 978-0-936406-36-7 |
| ISSN: | 2330-3646 |
| Language: | English |
| Subjects: | GNSS; DGNSS; GPS; Accurate positioning |
| Subject (DDC): | 629: Aeronautical, automotive engineering |
| Abstract: | Stand-alone Global Navigation Satellite System (GNSS) receivers often lack sufficient accuracy for high-precision applications, leading to the use of Differential GNSS (DGNSS) to improve accuracy. This is vital in aviation and maritime navigation. However, challenges arise in applications where continuous correction data transmission is impractical due to limited connectivity or power. In addition, the distance from reference stations and the age of correction data can lead to pseudorange error decorrelation, affecting positioning accuracy. Understanding these factors is crucial to optimizing DGNSS in situations with limited real-time data or distant reference stations. This study analyzed the effects of baseline length and correction data age on positioning accuracy using data from the Automatic GNSS network Switzerland (AGNES). It considered 28 Local Area DGNSS (LADGNSS) networks with baselines ranging from 20 km to 250 km, assessing absolute positioning errors at three levels of ionospheric activity and correction data ages up to 1 h. The software RTKLIB was used for DGNSS position calculations and to compare results with standard Pseudorange (PR) error estimation methods. The study found that with short baselines and current correction data, an accuracy (CEP50) of 15 cm is achievable regardless of ionospheric activity. Under low ionospheric conditions, baseline length has minimal impact, maintaining a CEP50 of 33 cm even with a baseline of 250 km. Corrections less than 14 min old consistently yielded sub-meter accuracy for baselines up to 100 km and nominal ionospheric activities. During high ionospheric activity, baseline length and corrections age significantly affect accuracy. The study concludes that sub-meter accuracy is attainable even under high ionospheric conditions without close proximity to the base station and with slightly outdated correction data, which outperforms all considered stand-alone positioning approaches. |
| URI: | https://digitalcollection.zhaw.ch/handle/11475/29973 |
| Fulltext version: | Published version |
| License (according to publishing contract): | Licence according to publishing contract |
| Restricted until: | 2024-08-31 |
| Departement: | School of Engineering |
| Organisational Unit: | Institute of Signal Processing and Wireless Communications (ISC) Centre for Aviation (ZAV) |
| Appears in collections: | Publikationen School of Engineering |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 2024_Moser-etal_Accuracy-of-code-based-DGNSS_ITM24.pdf Until 2024-08-31 | 1.03 MB | Adobe PDF | View/Open |
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Moser, S., Sarperi, L., & Felux, M. (2024). Investigating the accuracy of code based DGNSS as a function of correction data age, baseline length, and ionospheric activity [Conference paper]. Proceedings of the 2024 International Technical Meeting of the Institute of Navigation, 272–286. https://doi.org/10.33012/2024.19491
Moser, S., Sarperi, L. and Felux, M. (2024) ‘Investigating the accuracy of code based DGNSS as a function of correction data age, baseline length, and ionospheric activity’, in Proceedings of the 2024 International Technical Meeting of The Institute of Navigation. Manassas: Institute of Navigation, pp. 272–286. Available at: https://doi.org/10.33012/2024.19491.
S. Moser, L. Sarperi, and M. Felux, “Investigating the accuracy of code based DGNSS as a function of correction data age, baseline length, and ionospheric activity,” in Proceedings of the 2024 International Technical Meeting of The Institute of Navigation, Feb. 2024, pp. 272–286. doi: 10.33012/2024.19491.
MOSER, Simon, Luciano SARPERI und Michael FELUX, 2024. Investigating the accuracy of code based DGNSS as a function of correction data age, baseline length, and ionospheric activity. In: Proceedings of the 2024 International Technical Meeting of The Institute of Navigation. Conference paper. Manassas: Institute of Navigation. Februar 2024. S. 272–286. ISBN 978-0-936406-36-7
Moser, Simon, Luciano Sarperi, and Michael Felux. 2024. “Investigating the Accuracy of Code Based DGNSS as a Function of Correction Data Age, Baseline Length, and Ionospheric Activity.” Conference paper. In Proceedings of the 2024 International Technical Meeting of the Institute of Navigation, 272–86. Manassas: Institute of Navigation. https://doi.org/10.33012/2024.19491.
Moser, Simon, et al. “Investigating the Accuracy of Code Based DGNSS as a Function of Correction Data Age, Baseline Length, and Ionospheric Activity.” Proceedings of the 2024 International Technical Meeting of the Institute of Navigation, Institute of Navigation, 2024, pp. 272–86, https://doi.org/10.33012/2024.19491.
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