Results 21 to 30 of about 865 (172)
Scientific Reports, 2021 Global Navigation Satellite System (GNSS) is used in seismology to study the ground displacements as well as to monitor the ionospheric total electron content (TEC) perturbations following seismic events.
Michela Ravanelli +5 more
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A Bidirectional Deep-Learning Algorithm to Forecast Regional Ionospheric TEC Maps
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022 The rapid evolutions in artificial intelligence and the machine learning era have significantly improved accuracy for ionospheric space weather forecasting models.
Kondaveeti Sivakrishna +2 more
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Terrestrial, Atmospheric and Oceanic Sciences, 2021 A total solar eclipse passed over the continental United States from the west to the east coast on 21 August 2017. Measurements made by more than 2200 groundbased GNSS (Global Navigation Satellite System) receivers observed a significant decrease in ...
Chi-Yen Lin +6 more
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Global long-term trends in the total electron content [PDF]
Annales GeophysicaeTotal electron content (TEC) is an important parameter for ionospheric dynamics, global navigation satellite system/Global Positioning System (GNSS/GPS) signal propagation and related applications of GNSS/GPS signals.
J. Urbář, J. Laštovička
doaj +1 more source
Generation of Proxy GIM‐TEC for Extreme Storms Before the Era of GNSS Observations
Journal of Geophysical Research: Space Physics, 2022 AbstractFor the first time, we reconstructed global distribution of both the total electron content disturbance W index and TEC values for eight extreme storms (Dst < −250 nT) occurred before the epoch of GNSS observations in solar cycle 22. We created a model based on superposed epoch analysis of the training set of GIM‐W maps of nine SC23 extreme ...
Tamara Gulyaeva +4 more
openaire +3 more sources
Analysis of Polar Ionosphere Anomaly of Interplanetary Shock Events Based on GNSS TEC
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023 Using large-scope and high-accuracy global navigation satellite system (GNSS) ionospheric monitoring, this study considered the polar ionosphere anomaly morphology caused by an interplanetary shock event that occurred on September 12, 2014. First, we used the continuous observation data of GNSS stations in the Antarctic region to estimate the carrier ...
Ran Cui +6 more
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WTEC: A new index to estimate the intensity of ionospheric disturbances
Results in Physics, 2018 We propose a new index, WTEC, to estimate the level of ionospheric disturbances from Global Navigation Satellite Systems (GNSS) data. The index is calculated based on dual-frequency phase measurements from single GNSS receiver.
S.V. Voeykov +4 more
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Ionospheric Effects on High Gain Antenna GNSS Measurements � TEC Estimation and Correction [PDF]
ION GNSS+, The International Technical Meeting of the Satellite Division of The Institute of Navigation, 2017 The ionospheric delay of global navigation satellite systems (GNSS) signals typically is compensated by adding a single correction value to the pseudorange measurement of a GNSS receiver. Yet, this neglects the dispersive nature of the ionosphere. In this context we analyze the ionospheric signal distortion beyond a constant delay. These effects become
Thoelert, Steffen +3 more
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Ionosphere Model for European Region Based on Multi-GNSS Data and TPS Interpolation
Remote Sensing, 2017 The ionosphere is still considered one of the most significant error sources in precise Global Navigation Satellite Systems (GNSS) positioning. On the other hand, new satellite signals and data processing methods allow for a continuous increase in the ...
Anna Krypiak-Gregorczyk +2 more
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Accuracy Analysis of International Reference Ionosphere 2016 and NeQuick2 in the Antarctic
Sensors, 2021 Global navigation satellite system (GNSS) can provide dual-frequency observation data, which can be used to effectively calculate total electron content (TEC).
Zihuai Guo +7 more
doaj +1 more source