Quantification of total electron content in the ionosphere from GPS/BeiDou receiver in low latitude region over Nongbualamphu, Thailand
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Abstract
Variations in Total Electron Content (TEC) within the ionosphere arise from multiple factors, including solar flares, shifts in Earth’s magnetic field, vertical earthquakes, and tsunamis, all of which directly impact global satellite navigation systems. This study aims to examine and compare TEC values in the ionosphere at an altitude of 450 kilometers using data from GPS and BeiDou satellites above the Meteorological Department in Nong Bua Lam Phu. Data was collected through a multi-frequency GNSS receiver (BG2s) installed at the Nong Bua Lam Phu Meteorological Station, serving as the foundation for analysis.
Results indicate that TEC values correlate with solar activity during the day from March 14 to March 31, 2024. TEC tends to increase during periods of intense sunlight, causing a rise in electron density within the ionosphere. Additionally, TEC values from GPS and BeiDou satellites exhibit a similar trend, though GPS consistently shows higher TEC than BeiDou. This study concludes that ionospheric TEC varies with daily solar patterns, reaching peak levels before noon and declining from midnight until the following morning.
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สงวนสิทธิ์ โดย สถาบันการอาชีวศึกษาภาคตะวันออกเฉียงเหนือ 1
306 หมู่ 5 ถนนมิตรภาพ หนองคาย-อุดรธานี ตำบลโพธิ์ชัย อำเภอเมืองหนองคาย จังหวัดหนองคาย 43000
โทร 0-4241-1445,0-4241-1447
ISSN : 3027-6861 (print) ISSN : 3027-687X (online)
References
P.Pitiphum, P.Sathitchok, and P.Wasan, “Step into the world of precise positioning: Current and future developments in multiple global navigation satellite systems”, SCIENCE AND TECHNOLOGY NAKHON SAWAN RAJABHAT UNIVERSITY JOURNAL, Vol.9, No.10, p1-16,2018. (in Thai)
T. Thayathip, “GNSS Time and Frequency Transfer”, ECTI Transaction on Application Research and Development, Vol.1, No.1, p1-9,2012. (in Thai)
R. SONTAYA, “Analysis and Evaluation of GNSS Signal Quality of Plate Tectonics Measuring Stations”, Earthquake Monitoring System Analysis and Development Sub-division Earthquake Observation Division, METEOROLOGICAL DEPARTMENT, Bangkok,
THAILAND, pp1-61, 2020. (in Thai)
P. Pornchai, D. Phutthiphon, and P. Sophon, “Evaluation of the positioning accuracy of low-cost GNSS satellite receivers for landslide monitoring”, The 28th National Convention on Civil Engineering, Vol.28. p1-7, 2023. (in Thai)
T. Thayathip, “GNSS time and frequency transfers”, METROLOGY info Ministry of Higher Education, Science, Research and Innovation, Vol.23, p1-19, 2023. (in Thai)
N. Sarawut, “The ionosphere affects the accuracy of GPS positioning”, EAU Heritage Journal Science and Technology, Vol.5, No.1, p17-25, 2011. (in Thai)
P. Wongcharoen et al., "The variation of critical frequency of E layer over Chumphon, Thailand," 2013 IEEE International Conference on Space Science and Communication (IconSpace), Melaka, Malaysia, pp. 198-201, 2013.
C. Aditep, and et al., “Study on variation of total ionospheric electron content during solar eclipse”, Kasetsart University Annual Conference, Vol.35, p362-368, 1997. (in Thai)
K. Prasert Kenphanko, T. Busarasiri, and S. Phonchai, “Development of dual-frequency GPS receiver network system and analysis of ionospheric electron content variance over Chumphon measuring station, Thailand: Complete research report”, KMITL E- Research,
Documents of King Mongkut's Institute of Technology Ladkrabang, King Mongkut's Institute of Technology Ladkrabang. Central Library Office. 2016. (in Thai)
K. Domijan, D.S. Bloomfield, and F. Pitié, “Solar Flare Forecasting from Magnetic Feature Properties Generated by the Solar Monitor Active Region Tracker”, Sol Phys, Vol.294, No.6, p1-22,2019.
P. Kenpankho. “Comparison of GPS TEC measurements with IRI TEC prediction at the equatorial latitude station, Chumphon, Thailand”, Earth Planets Space, Vol.63,p365-370, 2011.
U.A. Yucel, “Earthquake prediction, ionospheric total electron content, and three earthquakes in California”, Thermal Science, Vol.23, No.1, p167-174,
Thailand GNSS and Space Weather, “Information Data Center. (n.d.). Slant Total Electron Content (STEC)”, [online] http://iono-gnss.kmitl.ac.th/?page_id=243.(Accessed : October 10, 2020).
P.K.Enge, “The Global Positioning System: Signals, measurements, and performance”, Int J Wireless Inf Networks, Vol.1, p83–105, 1994.
Y.Norsuzila, M. Abdullah, and M. Ismail, “Leveling Process of Total Electron Content (TEC) Using Malaysian Global Positioning System (GPS) Data”, American J. of Engineering and Applied Sciences, Vol.1, No.3, p223-229, 2008.
Ma, G. and Maruyama, T. 2003. “Derivation of TEC and estimation of instrumental biases from GEONET in Japan.” Ann. Geophys., vol. 21, p2083-2093. 2003.
IRI, “International Reference Ionosphere – IRI (2016) with IGRF – 13 coefficients”, [online] https://ccmc.gsfc.nasa.gov/modelweb/models/iri2016_vitmo.php. (Accessed : September 7, 2020).
