Positioning

Data products, services, learning resources and publications from CEGS related to GNSS positioning.

Data products

• Positioning error map
• Scatter and grid VTEC 2-D maps
• Total Electron Content (TEC) by station
• TEC Forecasting

Services

• CORS service (NTRIP): GNSS base stations in Bangkok (KMIT) and Nakhonratchasima (RUTI)
• Data request: GNSS RINEX data and the GNSS CORS portals in Thailand
• Software

Learn

• Knowledges: RTK Station Setup · RTKNavi usage · NTRIP Caster setup · Ionospheric effect on positioning · Iono delay model · Effects on GNSS accuracy

Publications

1. P. C. Thu, P. Supnithi, J. Budtho, A. Saekow, T. Sopon, K. Hozumi, L. M. M. Myint, “Instrumental Receiver Bias Estimation for Ionospheric Total Electron Content by Neural Network Model,” ECTI Transactions on Electrical Engineering Electronics and Communications, vol. 21, no. 3, pp. 251470, 2023. https://doi.org/10.37936/ecti-eec.2023213.251470
2. N. Tongkasem, L. M. M. Myint, P. Supnithi, “Estimation and Validation of Vertical Total Electron Content Using Standalone Single-Frequency Observations,” IEEE Access, vol. 10, pp. 103485–103495, 2022. https://doi.org/10.1109/access.2022.3208102
3. P. Kenpankho, A. Chaichana, K. Trachu, P. Supnithi, K. Hozumi, “Real-time GPS receiver bias estimation,” Advances in Space Research, 2021, https://doi.org/10.1016/j.asr.2021.01.032.
4. S. Jongsintawee, S. Rungraengwajiake, P. Supnithi, C. Panachart, “Comparison of GPS Positioning Accuracy Using Klobuchar Model and IGS TEC Model in Thailand,” KMITL-Science and Technology Journal, vol. 16, no. 1, 2016.
5. K. Watthanasangmechai, P. Supnithi, S. Lerkvaranyu, T. Maruyama, “TEC prediction with neural network for equatorial latitude station in Thailand,” Earth Planets Space, vol. 64, no.6, pp. 473-483, June 2012. download

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