Abstract
Monitoring the Earth’s ionosphere is an important, fundamental and applied problem. Global Navigation Satellite Systems (GNSS) provide a way of measuring the ionospheric total electron content (TEC), but real-time single-station absolute TEC measurements are still a problem. This study describes a single-station system to measure the absolute TEC, based on the GNSS–MITIGATOR (MonITorInG the Absolute TOtal electRon content) system. The latter enables real-time measurements for the absolute TEC and its derivatives in time and in space to be obtained. The system is implemented by using JAVAD receivers. The convergence time and the run-mode retention time is ~8 h. We provide potential methods for using the system to estimate the critical frequency of the ionosphere, foF2, at oblique paths in the Siberian region. The developed tool could be useful for supporting real-time multi-instrumental ionosphere monitoring or for compensating for the ionospheric errors of radio equipment.
Highlights
Global Navigational Satellite Systems (GNSS) [1] have enabled scientists to obtain regular ionospheric observations on a global scale [2,3,4]
Li et al [5] presented a system developed at the Chinese Academy of Sciences for real-time monitoring of the total electron content (TEC) driven by the global GNSS receivers network
Titov et al [6] developed a monitoring system using the network of stations and the assimilation model, where the authors used a spherical harmonics expansion as the initial assumption for TEC distribution for the sake of their calibration [7]
Summary
Global Navigational Satellite Systems (GNSS) [1] have enabled scientists to obtain regular ionospheric observations on a global scale [2,3,4]. Li et al [5] presented a system developed at the Chinese Academy of Sciences for real-time monitoring of the TEC driven by the global GNSS receivers network. Titov et al [6] developed a monitoring system using the network of stations and the assimilation model, where the authors used a spherical harmonics expansion as the initial assumption for TEC distribution for the sake of their calibration [7]. One should note that the above papers do not involve information patterns (or source codes) and detailed documentation of the systems. This does not allow for the reproduction of the developed solutions.
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