Results 41 to 50 of about 2,679 (211)
Remote SensingThis study investigates the relationship between geomagnetic activities and ionospheric scintillations, focusing on how solar and geomagnetic parameters influence ionospheric disturbances across varying time frames and latitudes.
Alireza Atabati +3 more
doaj +1 more source
AATR an ionospheric activity indicator specifically based on GNSS measurements [PDF]
, 2018 This work reviews an ionospheric activity indicator useful for identifying disturbed periods affecting the performance of Global Navigation Satellite System (GNSS). This index is based in the Along Arc TEC Rate (AATR) and can be easily computed from dual-
González Casado, Guillermo +5 more
core +2 more sources
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. Prediction of the occurrence of scintillation at L band frequencies is needed to mitigate the disruption of space-based communication and navigation systems. The purpose of
openaire +4 more sources
GPS Carrier Tracking Loop Performance in the presence of Ionospheric Scintillations [PDF]
, 2005 The performance of several GPS carrier tracking loops is evaluated using wideband GPS data recorded during strong ionospheric scintillations. The aim of this study is to determine the loop structures and parameters that enable good phase tracking ...
Humphreys, Todd E. +2 more
core +1 more source
Global morphology of ionospheric scintillations
Proceedings of the IEEE, 1971 Starting with post World War II studies of fading of radio star sources and continuing with fading of satellite signals of Sputnik, vast quantities of data have built up on the effect of ionospheric irregularities on signals from beyond the F layer. The review attempts to organize the available amplitude and phase scintillation data into equatorial ...
J. Aarons, H.E. Whitney, R.S. Allen
openaire +3 more sources
SEPARATING NIGHTSIDE INTERPLANETARY AND IONOSPHERIC SCINTILLATION WITH LOFAR [PDF]
The Astrophysical Journal Letters, 2016 ABSTRACT Observation of interplanetary scintillation (IPS) beyond Earth-orbit can be challenging due to the necessity to use low radio frequencies at which scintillation due to the ionosphere could confuse the interplanetary contribution. A recent paper by Kaplan et al.
R. A. Fallows +6 more
openaire +3 more sources
Remote Sensing, 2023 Approaching the peak year of the 25th solar activity cycle, the frequency of strong geomagnetic storms is gradually increasing, which seriously affects the navigation and positioning performance of GNSS.
Yifan Wang +6 more
doaj +1 more source
Detection of Equatorial Plasma Bubbles Using the COSMIC‐2 Rate of TEC Index
Journal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.Abstract Equatorial plasma bubbles (EPBs) are large‐scale plasma depletion structures that can disrupt Global Navigation Satellite Systems (GNSS) and other space‐based technologies. Several instruments have been employed to study EPB dynamics, with Total Electron Content (TEC) and Rate of TEC change Index (ROTI) data standing out as valuable parameters
Ana L. Christovam +2 more
wiley +1 more source
Two‐Dimensional Reconstruction of Ionospheric Plasma Density Variations Using Swarm
Space Weather, 2020 Space weather phenomena such as scintillations of Global Navigation Satellite Systems (GNSS) signals are of increasing importance for aviation, the maritime, and civil engineering industries.
A. Fæhn Follestad +4 more
doaj +1 more source
PPP at Low Latitudes With Ionospheric Model Exclusively Based on Single Frequency GNSS Measurements
Space Weather, 2023 Single frequency users of the Global Navigation Satellite System (GNSS) should correct the ionospheric delay to obtain positioning solutions. A valuable source of ionospheric delay corrections is the global ionospheric models (GIMs) of Vertical Total ...
Ana L. Christovam +4 more
doaj +1 more source