Journal of Positioning, Navigation, and Timing (J Position Navig Timing; JPNT)
Citation: Choi, B.-K., Sohn, D.-H, Hong, J., & Lee, W. K. 2023, QZSS TEC Estimation and Validation Over South Korea, Journal of Positioning, Navigation, and Timing, 12, 343-348.
Journal of Positioning, Navigation, and Timing (J Position Navig Timing) 2023 December, Volume 12, Issue 4, pages 343-348. https://doi.org/10.11003/JPNT.2023.12.4.343
Received on 10 October 2023, Revised on 06 November 2023, Accepted on 06 November 2023, Published on 15 December 2023.
License: Creative Commons Attribution Non-Commercial License (https://creativecommons.org/licenses/bync/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Space Science Division, Korea Astronomy and Space Science Institute, Daejeon 34055, Korea
†Corresponding Author: E-mail, bkchoi@kasi.re.kr; Tel, +82-42-865-3237; Fax, +82-42-861-5610
The ionosphere acts as the largest error source in the Global Navigation Satellite System (GNSS) signal transmission. Ionospheric total electron content (TEC) is also easily affected by changes in the space environment, such as solar activity and geomagnetic storms. In this study, we analyze changes in the regional ionosphere using the Qusai-Zenith Satellite System (QZSS), a regional satellite navigation system. Observations from 9 GNSS stations in South Korea are used for estimating the QZSS TEC. In addition, the performance of QZSS TEC is analyzed with observations from day of year (DOY) 199 to 206, 2023. To verify the performance of our results, we compare the estimated QZSS TEC and CODE Global Ionosphere Map (GIM) at the same location. Our results are in good agreement with the GIM product provided by the CODE over this period, with an averaged difference of approximately 0.1 TECU and a root mean square (RMS) value of 2.89 TECU.
GNSS, TEC, QZSS, GIM
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This research was supported by the Korea Astronomy and Space Science Institute under the R&D program (Project No. 2023-1-8-5008) supervised by the Ministry of Science and ICT.
Methodology, B.-K. Choi, W.K. Lee, and D.-H Sohn; software, B.-K. Choi; formal analysis, B.-K. Choi; investigation, J. Hong, and D.-H. Sohn.
The authors declare no conflict of interest.