Effect of Ionospheric Scintillation on Precise Positioning Solutions in Vietnam
Main Article Content
Abstract
The relative positioning applications can reach cm-level accuracy of positioning due to the use the very precise but ambiguous carrier phase observations instead of pseudorange ones used in conventional absolute positioning approach. These applications, however, are very sensitive to the irregular variation and disturbances in the ionospheric delay. Vietnam locates at a low-latitude region near the equator where having many irregular variations in ionosphere. In addition, Ionosphere is one of the most affected region if any scintillation occurs. In this study, we first propose a software-based receiver to detect the ionospheric scintillation in Vietnam. After detecting the scintillation, we investigate the impact of the scintillation index to the precise positioning solutions. For scintillation detection, we compute ΦΦp, a parameter to quantify the scintillation index. To investigate the effect of scintillation, we compare the results of RTK solutions in two scenarios: no scintillation and scintillation. Hopefully, these results will contribute valued information to GNSS research community in Vietnam.
Keywords
Ionosphere, scintillation, GNSS, GPS
Article Details
References
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[2] M. Le Huy, C. Amory-Mazaudier, R. Fleury, A. Bourdillon, P. Lassurdie-Duchesne, L. Tran Thi, T. Nguyen Chien, T. Nguyen Ha, P. Vila, “Time variations of the total electron content in the Southeast Asian equatorial ionization anomaly for the period 2006–2011”, Journal of Advances in Space Research, vol. 54, (2014) 355–368.
[3] Le Huy Minh, Tran Thi Lan, R. Fleury, Le Truong Thanh, Nguyen Chien Thang, Nguyen Ha Thanh, “TEC variations and ionospheric disturbances during the magnetic storm in March 2015 observed from continuous GPS data in the Southeast Asia region”, Vietnam Journal of Earth Sciences, vol. 38(3), (2016) 287-305.
[4] Deshpande, K. B., Bust, G. S., Clauer, C. R., Scales, W. A., Frissell, N. A., Ruohoniemi, J. M., and Weatherwax, A. T., “Satellite-beacon Ionospheric scintillation Global Model of the upper Atmosphere (SIGMA) II: Inverse modeling with high-latitude observations to deduce irregularity physics”. Journal of Geophysical Research: Space Physics, vol. 121(9), (2016) 9188-9203.
[5] Trần Thị Lan, Lê Huy Minh, R. Fleury, Trần Việt Phương, Nguyễn Hà Thanh, “Đặc trưng xuất hiện nhập nhảy điện ly ở Việt Nam trong giai đoạn 2009 – 2012”, Tạp chí Các Khoa học về Trái đất, Số 373(3), (2015) 264-274.
[6] Van Dierendonck, A. J., Klobuchar, J., & Hua, Q., “Ionospheric scintillation monitoring usingcommercial single frequency C/A code receivers”. In Proceedings of ION GPS, vol. 93, (1993) 1333-1342.
[7] Spogli, Luca and Cesaroni, Claudio and Di Mauro, Domenico and Pezzopane, Michael and Alfonso, Lucilla and Muscio, Elvira and Povero, Gabriella and Pini, Marco and Dovis, Fabio and Romero, Rodrigo and Linty, Nicola and Abadi, Praymno and Nureerin, Fitri and Husin, Asnawi and Le Huy Minh and Lam, Tran Thi and La, The Vinh and Pallot, Valdir Gil and Fiori, Nicola, “Formation of ionospheric irregularities over Southeast Asia during the 2015 St. Patrick’s Day storm”, Journal of Geophysical Research: Space Physics, vol. 121, issue 12, (2016) 12211-12233.
[8] Oliveira Marcos, A., Paula, E. R., Muella, A. H., Tadeu, M., and Perrella, W. J., “On the second order statistics for GPS ionospheric scintillation modeling”. Radio Science, 49(2), (2014) 94-105.
[9] L.T. Vinh, P. X. Quang, A. Garcia-Rigo, A. Rovira-Carrera and D. Ibañez-Segura, 2013, “Experiments on the Ionospheric Models in GNSS”, IEEEC Technical Report, vol. 113, no. 335, ISSN 0913-5685.
[10] Priyadarshi, S., “A review of ionospheric scintillation models”. Surveys in geophysics, vol. 36(2), (2015) 295-324.
[11] EGNO, The European Geostationary Navigation Overlay System –A Cornerstone of Galileo (ESA SP-1303).
[12] FAA. Specification for the Wide Area Augmentation System (WAAS). FAA-E-2892B. August 13, 2001.
[13] Curran, James T., Bavaro, Michele, Morrison, Aiden, Fortuny, Joaquim, “Operating a Network of Multi-Frequency Software-Defined Ionosphere Monitoring Receivers”, Proceedings of the 28th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2015), Tampa, Florida, September 2015, pp. 3469-3479.