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http://dx.doi.org/10.12673/jant.2014.18.4.260

Performance Analysis of Ionospheric Delay Estimation for Multi-Constellation WA-DGNSS According to the Number of Reference Stations  

Kim, Dong-Uk (Department of Mechanical and Aerospace Engineering, Seoul National University)
Han, Deok-Hwa (Department of Mechanical and Aerospace Engineering, Seoul National University)
Yun, Ho (Department of Mechanical and Aerospace Engineering, Seoul National University)
Kee, Chang-Don (Department of Mechanical and Aerospace Engineering, Seoul National University)
Seo, Seung-Woo (Agency for Defense Development)
Park, Heung-Won (Agency for Defense Development)
Publication Information
Journal of Advanced Navigation Technology / v.18, no.4, 2014 , pp. 260-267 More about this Journal
Abstract
For the purpose of improving the accuracy of Wide Area Differential GNSS (WA-DGNSS), estimation performance of ionospheric delay error which has a great impact on GPS error sources should be enhanced. This paper applied multi-constellation GNSS which represents GPS in USA, GLONASS in Russia, and Galileo in Europe to WA-DGNSS algorithm in order to improve performance of ionospheric delay estimation. Furthermore, we conducted simulation to analyze ionospheric delay estimation performance in Korean region by increasing the number of reference stations. Consequently, using multi-constellation GNSS to improve performance of ionospheric delay estimation is more effective than increasing the number of reference stations in spite of similar number of measurements which are in use for estimation. We expect this result can contribute to improvement for ionospheric delay estimation performance of single-frequency SBAS (Satellite Based Augmentation System) user.
Keywords
Wide area differential GNSS; Multi-constellation GNSS; Ionospheric delay; GLONASS; Galileo;
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Times Cited By KSCI : 2  (Citation Analysis)
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