Results 21 to 30 of about 36,192 (283)

An experiment of predicting Total Electron Content (TEC) by fuzzy inference systems [PDF]

Earth, Planets and Space, 2008
Abstract The Total Electron Content (TEC) is predicted by fuzzy inference systems for various station-satellite pairs. GPS data from the GRAZ, HFLK, LINZ, MOPI and UZHL permanent stations are processed in order to obtain the vertical total electron content (VTEC) using differenced carrier-smoothed code observations.
Akyilmaz, O., Arslan, N.
openaire   +1 more source

Performance of GPS slant total electron content and IRI-Plas-STEC for days with ionospheric disturbance

Geodesy and Geodynamics, 2016
Total Electron Content (TEC) is an important observable parameter of the ionosphere which forms the main source of error for space based navigation and positioning systems.
Feza Arikan, Seymur Shukurov, Hakan Tuna, Orhan Arikan, T.L. Gulyaeva   +4 more
doaj   +1 more source

Ionospheric tilting of 21 August 2017 total solar eclipse sounded by GNSS ground-based receivers and radio occultation

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, Jann-Yenq Liu, Yang-Yi Sun, Charles Chien-Hung Lin, Loren C. Chang, Chao-Yen Chen, Chia-Hung Chen   +6 more
doaj   +1 more source

Investigating short-term earthquake precursors detection through monitoring of total electron content variation in ionosphere

Frontiers in Astronomy and Space Sciences, 2023
The effectiveness and accuracy of earthquake precursors are measured by the ability of the precursors to predict the time, epicentral distance, and magnitude of the earthquake for short-term earthquake prediction.
Nur Fatin Irdina Zulhamidi, Mardina Abdullah, Mardina Abdullah, Nurul Shazana Abdul Hamid, Nurul Shazana Abdul Hamid, Khairul Adib Yusof, Khairul Adib Yusof, Siti Aminah Bahari   +7 more
doaj   +1 more source

Real-time detection of tsunami ionospheric disturbances with a stand-alone GNSS receiver. A preliminary feasibility demonstration [PDF]

, 2017
It is well known that tsunamis can produce gravity waves that propagate up to the ionosphere generating disturbed electron densities in the E and F regions. These ionospheric disturbances can be studied in detail using ionospheric total electron content (
Crespi, Mattia, Komjathy, Attila, Mannucci, Anthony J., Mazzoni, Augusto, SAVASTANO, GIORGIO, Verkhoglyadova, Olga, Wei, Yong   +6 more
core   +1 more source

MITIGATOR: GNSS-Based System for Remote Sensing of Ionospheric Absolute Total Electron Content

Universe, 2022
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
Yury V. Yasyukevich, Artem M. Vesnin, Alexander V. Kiselev, Anna A. Mylnikova, Alexey V. Oinats, Vera A. Ivanova, Vladislav V. Demyanov   +6 more
doaj   +1 more source

Assessment of the Performance of Ionospheric Models with NavIC Observations during Geomagnetic Storms

, 2020
The paper presents an assessment of the performances of the global empirical models: International Reference Ionosphere (IRI)-2016 and the NeQuick2 model derived ionospheric Total Electron Content (TEC) with respect to the Navigation with Indian ...
balan, hochegger, jakowski, mruthyunjaya, radicella   +4 more
core   +1 more source

Determinations of ionosphere and plasmasphere electron content for an African chain of GPS stations [PDF]

Annales Geophysicae, 2017
The confluence of recent instrumentation deployments in Africa with developments for the determination of plasmasphere electron content using Global Positioning System (GPS) receivers has provided new opportunities for investigations in that region ...
A. J. Mazzella Jr., J. B. Habarulema, E. Yizengaw   +2 more
doaj   +1 more source

Three-dimensional waveform modeling of ionospheric signature induced by the 2004 Sumatra tsunami [PDF]

, 2006
International audienceThe Sumatra, December 26th, 2004, tsunami produced internal gravity waves in the neutral atmosphere and large disturbances in the overlying ionospheric plasma.
Alam Kherani, E., Hébert, Hélène, Lognonné, Philippe, Occhipinti, Giovanni   +3 more
core   +5 more sources

A statistical investigation of pre-earthquake ionospheric TEC anomalies

Geodesy and Geodynamics, 2011
Previous researches show that the total electron content (TEC) in the ionospheric exhibits anomalous disturbances a few days or hours prior to earthquakes.
Zhu Fuying, Wu Yun, Zhou Yiyan, Lin Jian
doaj   +1 more source