Results 71 to 80 of about 42,321 (217)
Study of spatial and temporal characteristics of L-band scintillations over the Indian low-latitude region and their possible effects on GPS navigation [PDF]
Annales Geophysicae, 2006 The scintillation data (S4-index) at the L-band frequency of 1.575GHz, recorded from a total of 18 GPS receivers installed at different locations in India under the GAGAN project, have provided us with a unique opportunity, for the first time in the ...
P. V. S. Rama Rao +3 more
doaj +1 more source
Mapping Space Weather Induced PPP‐AR Uncertainty to UAV Power‐Line Inspection Safety Risk
Space Weather, Volume 24, Issue 10, October 2026.Abstract Space weather can affect the reliability of satellite‐based positioning and thereby disrupt industrial operations that increasingly depend on Global Navigation Satellite System (GNSS) services. This concern is becoming more relevant with the rapid growth of the low‐altitude economy, where unmanned aerial vehicles (UAVs) are increasingly used ...
Mengfei Sun, Ning Li, Tong Liu
wiley +1 more source
Equatorial plasma bubbles and L-band scintillations in Africa during solar minimum [PDF]
Annales Geophysicae, 2012 We report on the longitudinal, local time and seasonal occurrence of equatorial plasma bubbles (EPBs) and L band (GPS) scintillations over equatorial Africa.
V. V. Paznukhov +17 more
doaj +1 more source
Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.Abstract This study investigates the roles of neutral winds, composition and atmospheric waves in storm‐time post‐midnight equatorial plasma bubble (EPB) development using the coupled SAMI3‐WACCMX model. Simulations reveal the formation of post‐midnight EPBs extending beyond 1,500 km in altitude and persisting into the post‐sunrise period.
Min‐Yang Chou +4 more
wiley +1 more source
Statistical investigations of gigahertz scintillations due to ionospheric irregularities in the Indian zone [PDF]
, 1997 93-98Some useful results of statistical investigations of ionospheric scintillations at gigahertz frequencies are reported in this paper. Temporal power spectral densities for weal an strong scintillations at both C and L bands, 50% decorrelation times ...
Bhattacharya, S, Banerjee, P K
core
Chaotic behaviour of ionospheric turbulence from scintillation measurements
, 1990 Ionospheric amplitude and phase scintillation data have been analysed to estimate the 'information dimension' associated with the attractor of the system.
Bhattacharyya, Archana
core +1 more source
Space WeatherIonospheric scintillations, which usually manifest as sudden, rapid fluctuations in radio wave signal phase and amplitude, challenge the reliability of satellite communication and navigation.
Yuhao Zheng +4 more
doaj +1 more source
Equatorial scintillations in relation to the development of ionization anomaly [PDF]
Annales Geophysicae, 2006 The irregularities in the electron density distribution of the ionosphere over the equatorial region frequently disrupt space-based communication and navigation links by causing severe amplitude and phase scintillations of signals.
S. Ray +3 more
doaj +1 more source
Geophysical Research Letters, Volume 53, Issue 17, 16 September 2026.Abstract This study demonstrates the intriguing and complex interplay among auroral precipitation, enhanced TEC, density irregularities, and amplitude scintillations observed during the November 2025 superstorm. For the first time, we present observations of strong amplitude scintillation across continental United States (CONUS)—nearly from coast to ...
E. Yizengaw +7 more
wiley +1 more source
Effect of magnetic activity on equatorial ionospheric scintillations
, 1986 Equatorial nighttime and daytime scintillation data at VHF have been examined to study the effect of magnetic activity on the ionospheric irregularities responsible for scintillations.
Krishna Murthy, B. V. +1 more
core +1 more source