Results 41 to 50 of about 2,215 (219)

Tackling ionospheric scintillation threat to GNSS in Latin America [PDF]

, 2011
Scintillations are rapid fluctuations in the phase and amplitude of transionospheric radio signals which are caused by small-scale plasma density irregularities in the ionosphere.
Aquino, M., Spogli, L., Elcia Ferreira Da Silva, Forte, Biagio, Romano, V., Romano, Vincenzo, Forte, B., Wernik, A W, Vincenzo Romano, Sleewaegen, J-M, Alfonsi, Lu., Alfonsi, L, Bougard, Bruno, De Franceschi, Giorgiana, Sleewaegen, Jean-Marie, Craig Hancock, Lucilla Alfonsi, Elmas, Z., Spogli, L, Romano, V, Aquino, Marcio, Andrzej W. Wernik, De Franceschi, G., Canto, A, Bruno Bougard, Hancock, Craig, Galera Monico, J. F., Giorgiana De Franceschi, Galera Monico, Joao Francisco, Alfonsi, Lucilla, Canto´, A., Galera Monico, Joao Francisco [UNESP], Luca Spogli, Da Silva, E. F., Monico, Joao F G, Veettil Sreeja, V., Andrea Cantó, Sreeja, Vadakke Veettil, Wernik, Andrzej W., Zeynep Elmas, Jean-Marie Sleewaegen, Hancock, C., Marcio Aquino, Sleewaegen, J. M., Bougard, B., Joao Francisco Galera Monico, Biagio Forte, Canto, Andrea, Wernik, A. W., Da Silva, Elcia F, Da Silva, Elcia Ferreira, Aquino, M, Elmas, Zeynep, Spogli, Luca, Vadakke Veettil Sreeja   +54 more
core   +1 more source

Investigating the Effects of Ionospheric Scintillation on Multi‐Frequency BDS‐2/BDS‐3 Signals at Low Latitudes

Space Weather, 2023
Ionospheric scintillation could seriously disrupt the signal tracking of the global navigation satellite systems (GNSS), further causing positioning accuracy degradation or unavailability.
Hang Liu, Xiaodong Ren, Xiaohong Zhang, Dengkui Mei, Pengxin Yang   +4 more
doaj   +1 more source

Observations and modeling of scintillation in the vicinity of a polar cap patch

Journal of Space Weather and Space Climate, 2022
Small-scale ionospheric plasma structures can cause scintillation in radio signals passing through the ionosphere. The relationship between the scintillated signal and how plasma structuring develops is complex.
Lamarche Leslie J., Deshpande Kshitija B., Zettergren Matthew D.   +2 more
doaj   +1 more source

The Drag of Ionosphere Plasma Drifts on Thermospheric Zonal Winds During the 10–12 May 2024 Superstorm

Geophysical Research Letters, Volume 53, Issue 11, 16 June 2026.
Abstract The observations from GRACE‐FO and DMSP satellites are utilized to analyze the ion‐neutral interaction near dusk during the 10–12 May 2024 super‐storm. The horizontal plasma convection dragged the anti‐sunward wind in the polar cap and sunward winds around the auroral and subauroral regions during whole storm times.
Ruilong Zhang, Libo Liu, Wenbo Li, Rongjin Du, Yuzhou Wang, Yiding Chen, Huijun Le   +6 more
wiley   +1 more source

Identification of ionospheric scintillation in the low-latitude African sector using a commercial CubeSat constellation

Journal of Space Weather and Space Climate
Radio occultation (RO) measurements performed by Global Navigation Satellite System (GNSS) receivers onboard low-earth orbit (LEO) satellites are commonly used for a variety of atmospheric applications, including ionospheric and space weather studies. We
Mohanty Shradha, Hoque M. Mainul, Angling Matthew J.   +2 more
doaj   +1 more source

Open Magnetic Field Lines Partition Auroral Oval Segments Into Transpolar Arcs

Geophysical Research Letters, Volume 53, Issue 11, 16 June 2026.
Abstract Transpolar arcs (TPAs) are auroral structures spanning the polar cap. One type appears in conjugate hemispheres and is thought to be located on closed field lines, but how closed flux enters the open polar cap remains debated. We address this using observation and simulation of conjugate TPAs after an interplanetary magnetic field (IMF) By ...
Xin‐Ming Chen, Zan‐Yang Xing, Qing‐He Zhang, Hui‐Gen Yang, L. R. Lyons, K. Oksavik, Yong‐Liang Zhang, S. E. Milan, Xiang‐Yu Wang, Yu‐Zhang Ma, Yong Wang, Lu Sheng, Duan Zhang, Zhi‐Feng Xiu, Bian‐Long Zhao   +14 more
wiley   +1 more source

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

Amplitude scintillation detection with geodetic GNSS receivers leveraging machine learning decision tree

Satellite Navigation
The amplitude scintillation detection is typically achieved by using the scintillation index generated by dedicated and costly ionospheric scintillation monitoring receivers (ISMRs).
Wang Li, Yiping Jiang, Hongyuan Ji, Wenqiang Wei   +3 more
doaj   +1 more source

The Prediction of Day‐to‐Day Occurrence of Low Latitude Ionospheric Strong Scintillation Using Gradient Boosting Algorithm

Space Weather, 2021
Ionospheric scintillations caused by equatorial plasma bubbles (EPBs) can seriously affect various high technology systems based on Global Navigation Satellite System (GNSS) signals at equatorial and low latitudes.
Xiukuan Zhao, Guozhu Li, Haiyong Xie, Lianhuan Hu, Wenjie Sun, Sipeng Yang, Yi Li, Baiqi Ning, Hisao Takahashi   +8 more
doaj   +1 more source

Height‐Dependent Evolution of the Ionospheric Response to the May 2024 Superstorm: Global GNSS‐POD, GNSS‐RO, and Ground‐Based Observations

Journal of Geophysical Research: Space Physics, Volume 131, Issue 6, June 2026.
Abstract Capturing global ionospheric response during extreme geomagnetic storms remains a major observational challenge. During 10–11 May, 2024 superstorm, we investigate the height‐dependent response of the F‐region using multi‐constellation GNSS‐POD limb‐sounding measurements from COSMIC‐2, Spire, PlanetiQ, and FengYun‐3 satellites. Approximately 12,
Nimalan Swarnalingam, Dong L. Wu, Daniel J. Emmons, Cornelius Csar Jude H. Salinas   +3 more
wiley   +1 more source