Technical note on the multi-GNSS, multi-frequency and near real-time ionospheric TEC monitoring system for South America

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Luciano Pedro Oscar Mendoza, Amalia M. Meza, Juan Manuel Aragón Paz


Development of regional services able to provide ionospheric total electron content (TEC) maps with a high spatial resolution, and in near real-time, are of high importance for applications and the research community. We provide here the methodologies, and a preliminary assessment, of such a system.
The system relies on the public Global Navigational Satellite Systems (GNSS) infrastructure in South America, it incorporates data from multiple constellations (currently GPS, GLONASS, Galileo and BeiDou), it employs multiple frequencies, and it produces continental wide TEC maps with a latency of just few minutes.
A year-round comparison of the produced maps with several products issued by the International GNSS Service (IGS) resulted in mean biases lower than 1 TEC units (TECU), whereas their evaluation against direct and independent GNSS-based slant TEC measurements resulted in accuracies of the same magnitude.



Atmospheric Sciences, Earth Sciences, Geophysics and Seismology, Oceanography and Atmospheric Sciences and Meteorology, Physical Sciences and Mathematics


GPS and GLONASS and Galileo and BeiDou multi-frequency signals employed, Near real-time and open-access ionosphere monitoring product


Published: 2019-02-21 06:52

Last Updated: 2019-04-08 04:46

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CC BY Attribution 4.0 International

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