Results 51 to 60 of about 71,360 (201)

Improving the GNSS positioning stochastic model in the presence of ionospheric scintillation [PDF]

, 2009
Ionospheric scintillations are caused by time-varying electron density irregularities in the ionosphere, occurring more often at equatorial and high latitudes.
Dodson, A. H., De Franceschi, G., Marques, H. [UNESP], Aquino, M., Monico, J. F. G., Monico, J. F. G. [UNESP], Romano, V., Alfonsi, L., Marques, H., Alfonsi, Lu., Andreotti, M.   +10 more
core   +1 more source

Ionospheric F‐Layer Scintillation Variabilities Over the American Sector During Sudden Stratospheric Warming Events

Space Weather, 2021
The present study investigates the ionospheric F‐layer scintillation responses in the American sector (90°W–0°, ±50° dip latitude) during the Northern Hemisphere winter sudden stratospheric warming events of 2007–2008, 2008–2009, 2009–2010, and 2012–2013.
Hailun Ye, Xianghui Xue, Tao Yu, Yang‐Yi Sun, Wen Yi, Chi Long, Weifan Zhang, Xiankang Dou   +7 more
doaj   +1 more source

Latitudinal Dependence of the Geomagnetic and Solar Activity Effect on Sporadic‐E Layer

Space Weather, Volume 24, Issue 8, August 2026.
Abstract Based on the global COSMIC occultation data, the latitudinal dependence of the geomagnetic and solar activity effect on the sporadic‐E (Es) layer is statically investigated. At middle geomagnetic latitudes, Es occurrence rates generally decrease with increasing solar activity, except during winter and spring in the Southern Hemisphere.
Qiong Tang, Wenjun Liu, Yuqiang Zhang, Ren Zhang, Zhibin Yu   +4 more
wiley   +1 more source

Global morphology of ionospheric scintillations

Proceedings of the IEEE, 1982
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

Solar Activity Impacts on Ionospheric Scintillation and Precise Point Positioning Based on Multi‐Year GNSS and Scintillation Observations

Space Weather
Solar activity induces ionospheric irregularities that degrade Global Navigation Satellite System (GNSS) performance through amplitude and phase scintillation.
Jincheng Li, Qi Liu, Xiaomin Luo, Manuel Hernández‐Pajares, Enric Monte‐Moreno, Guangxia Wang, Heng Yang, Chuanding Zhang, Li Yang, Yaoyao Liu   +9 more
doaj   +1 more source

Auroral Amplitude Scintillations Revealed With High‐Rate Scintillation Indices From a GNSS Array

Space Weather, Volume 24, Issue 8, August 2026.
Abstract As Global Navigation Satellite Signals pass through the ionosphere, particularly at high latitudes, they can refract and diffract, resulting in a phenomenon known as scintillation. Irregularities of all scale sizes can cause scintillation to occur.
G. Blinstrubas, S. Datta‐Barua
wiley   +1 more source

Beyond the Electrostatic Approach: Numerical Simulations of Martian Ionospheric Irregularities

AGU Advances, Volume 7, Issue 5, August 2026.
Abstract Numerical simulations play an essential role in the study of ionospheric irregularities. In the past few decades, electrostatic simulations have successfully simulated the nonlinear evolution of terrestrial ionospheric irregularities. However, the Mars Atmosphere and Volatile EvolutioN (MAVEN) observations reveal that the Martian ionospheric ...
Konghan Jiang, Jiuhou Lei, Maodong Yan
wiley   +1 more source

On the Mitigation of Ionospheric Scintillation in Advanced GNSS Receivers [PDF]

IEEE Transactions on Aerospace and Electronic Systems, 2018
Ionospheric scintillation is one of the major threats and most challenging propagation scenarios affecting Global Navigation Satellite Systems (GNSS) and related applications. The fact that this phenomenon causes severe degradations only in equatorial and high latitude regions has led to very few contributions dealing with the fundamental scintillation
Jordi Vilà-Valls, Pau Closas, Carles Fernández-Prades, James T. Curran   +3 more
openaire   +6 more sources

Climatology of GNSS ionospheric scintillation at high latitudes

, 2009
We analyse GNSS ionospheric scintillation data in the polar areas of both hemispheres to develop a climatology over a large geomagnetic quiet period. The conditions of the near-Earth environment leading to scintillation scenarios are investigated via ...
De Franceschi, G., Spogli, L., Dodson, A., Aquino, M.H.O., Romano, V., Alfonsi, Lu.   +5 more
core   +1 more source

Measuring Equatorial Ionospheric Scintillation over EIA Using L-Band SAR: A Case Study

Space: Science & Technology
The scintillation amplitude stripes have been frequently observed in numerous equatorial nighttime acquisitions of the Advanced Land Observing Satellite Phased Array-type L-band Synthetic Aperture Radar (PALSAR).
Feixiang Tang, Yifei Ji, Yongsheng Zhang, Zhen Dong, Zirui Chen, Yixun Zhu   +5 more
doaj   +1 more source