Results 51 to 60 of about 7,904 (219)
Multi-Frequency Simulation of Ionospheric Scintillation Using a Phase-Screen Model
Navigation, 2022 A fast Monte Carlo technique to simulate equatorial ionospheric scintillation on global navigation satellite system signals is proposed. The algorithm uses a single-layer phase-screen model of the ionosphere and the scintillation is expressed as a ...
Fernando D. Nunes +2 more
doaj +1 more source
Climatology of Plasma Irregularities Using ROTI Index From 2008 to 2023 in East West Asia
Space Weather, Volume 24, Issue 4, April 2026.Abstract This study investigates characteristics of ionospheric irregularities over the East–West Asian equatorial region using the Rate of TEC Index (ROTI) derived from Global Navigation Satellite System (GNSS) measurements. Data from four stations (GUAM, PIMO, CUSV, and IISC) were analyzed for 2008–2023, covering solar cycle (SC) 24 and the ascending
Pandit Drabindra +2 more
wiley +1 more source
Space Weather, Volume 24, Issue 4, April 2026.Abstract Storm‐time equatorial plasma bubble (EPB) dynamics play a critical role in space weather impacts on communication and navigation systems, yet the mechanisms governing their formation and evolution under storm conditions remain poorly understood.
Shasha Zou +6 more
wiley +1 more source
Space Weather, Volume 24, Issue 4, April 2026.Abstract This study investigated a large‐scale ionospheric irregularities event over low‐ to mid‐latitude China during the 1 December 2023 geomagnetic storm using ROTI data, loss‐of‐lock (LoL) in L2 from 250 GNSS receivers, and S4 data from 16 ISMs.
Yi Zeng +4 more
wiley +1 more source
State of the Early Career Profession in Space Physics and Aeronomy: Climatological Survey Results
Journal of Geophysical Research: Space Physics, Volume 131, Issue 4, April 2026.Abstract The American Geophysical Union (AGU) Space Physics & Aeronomy (SPA) section comprises scientists who study the Sun, solar wind, and planetary magnetospheres, ionospheres, and thermospheric/mesospheric systems along with their interconnections.
R. C. Allen +11 more
wiley +1 more source
Daily ionospheric forecasting service (DIFS) III [PDF]
Annales Geophysicae, 2005 The daily variability of the ionosphere can greatly affect HF or SATCOM communications. HF skywave operators plan frequency schedules months in advance, however, they also require daily knowledge of the ionospheric conditions in order to modify ...
N. Butcher
doaj +1 more source
Global distribution of ionospheric scintillations from the Real-Time GPS ROTI [PDF]
, 2018 A global real-time monitoring system has been implemented in the frame of ESA-ESTEC/EGNOS-POfunded project MONITOR. It is based on world-wide GNSS datastreams distributed by means of NTRIP and provides multiple ionospheric indices and products to the ...
García Rigo, Alberto +2 more
core
A Technique for Determining the Carrier Phase Differences between Independent GPS Receivers during Scintillation [PDF]
, 2007 A method for recovering the carrier phase differences between pairs of independent GPS receivers has been developed and demonstrated in truth-model simulations.
Humphreys, Todd E. +2 more
core +1 more source
Ionospheric precursors to scintillation activity
Annals of Geophysics, 2014 Ionospheric scintillation is the rapid fluctuation of both phase and amplitude of trans-ionospheric radio waves due to small scale electron density irregularities in the ionosphere.
Paul S.J. Spencer
doaj +1 more source
Space Weather, Volume 24, Issue 4, April 2026.Abstract This study investigates the impact of high‐latitude ionospheric irregularities on global positioning system (GPS) position accuracy during the 10–11 May 2024 geomagnetic storm. Using data from ground‐based GPS receivers and an all‐sky camera in Antarctica, we examined evolution of GPS vertical total electron content, phase fluctuations, and ...
Waqar Younas +8 more
wiley +1 more source