Results 21 to 30 of about 2,215 (219)

Multi-Scale Ionospheric Anomalies Monitoring and Spatio-Temporal Analysis during Intense Storm

Atmosphere, 2021
The ionosphere is a significant component of the geospace environment. Storm-induced ionospheric anomalies severely affect the performance of Global Navigation Satellite System (GNSS) Positioning, Navigation, and Timing (PNT) and human space activities ...
Na Cheng, Shuli Song, Wei Li
doaj   +1 more source

Measurements and simulation of ionospheric scattering on VHF and UHF radar signals : coherence times, coherence bandwidths and S4 [PDF]

, 2009
Irregularities in the electron density of the ionosphere cause phase and amplitude scintillation on transionospheric VHF and UHF radar signals, particularly at lower radio frequencies.
Cannon, Paul, Cannon, Paul; id_orcid, Groves, Keith, Rogers, Neil, Rogers, NC, Groves, KM   +5 more
core   +1 more source

Severe L-band scintillation over low-to-mid latitudes caused by an extreme equatorial plasma bubble: joint observations from ground-based monitors and GOLD

Earth, Planets and Space, 2023
The occurrence of plasma irregularities and ionospheric scintillation over the Caribbean region have been reported in previous studies, but a better understanding of the source and conditions leading to these events is still needed.
Jonas Sousasantos, Josemaria Gomez Socola, Fabiano S. Rodrigues, Richard W. Eastes, Christiano G. M. Brum, Pedrina Terra   +5 more
doaj   +1 more source

Precursors Identification for Forecasting UHF‐Band Ionospheric Scintillation Events Over Chinese Low‐Latitude Region by Deep Learning

Earth and Space Science, 2022
The occurrences of the UHF‐band ionospheric scintillation events caused by Equatorial Plasma Bubbles (EPBs) in the low‐latitude region depend on many factors.
Hongbo Zhang, Feifei Wang, Dongsheng Sheng, Panpan Ban, Yumei Liu   +4 more
doaj   +1 more source

Broadband meter‐wavelength observations of ionospheric scintillation [PDF]

Journal of Geophysical Research: Space Physics, 2014
Abstract Intensity scintillations of cosmic radio sources are used to study astrophysical plasmas like the ionosphere, the solar wind, and the interstellar medium. Normally, these observations are relatively narrow band.
Fallows, RA, Coles, WA, Mckay-Bukowski, D, Vierinen, J, Virtanen, II, Postila, M, Ulich, T, Enell, CF, Kero, A, Iinatti, T, Lehtinen, M, Orispää, M, Raita, T, Roininen, L, Turunen, E, Brentjens, M, Ebbendorf, N, Gerbers, M, Grit, T, Gruppen, P, Meulman, H, Norden, MJ, deReijer, JP, Schoenmakers, A, Stuurwold, K   +24 more
openaire   +4 more sources

Simultaneous interplanetary scintillation and Heliospheric Imager observations of a coronal mass ejection [PDF]

, 2008
We describe simultaneous Interplanetary Scintillation (IPS) and STEREO Heliospheric Imager (HI) observations of a coronal mass ejection (CME) on 16 May 2007. Strong CME signatures were present throughout the IPS observation.
Rouillard AP, Fallows, R. A., Rouillard, Alexis, Dorrian, G. D., Davies, J.A., Dorrian GD, Rouillard, A.P., Brown DS, Rouillard, A. P., Breen, A. R., Brown, D.S., Brown, Daniel, Fallows, R.A., Davies, Jackie, Breen, Andy, Fallows RA, Davies, J. A., Brown, Daniel Stephen, Davies JA, Dorrian, G.D., Fallows, Richard, Breen AR, Breen, A.R., Dorrian, Gareth   +23 more
core   +1 more source

ScintPi 2.0 and 3.0: low-cost GNSS-based monitors of ionospheric scintillation and total electron content

Earth, Planets and Space, 2022
We have devoted efforts to the development and performance evaluation of new low-cost ionospheric instruments for studies that require distributed observations and for educational and citizen science initiatives.
Josemaria Gomez Socola, Fabiano S. Rodrigues   +1 more
doaj   +1 more source

GPS phase scintillation and proxy index at high latitudes during a moderate geomagnetic storm [PDF]

Annales Geophysicae, 2013
The amplitude and phase scintillation indices are customarily obtained by specialised GPS Ionospheric Scintillation and TEC Monitors (GISTMs) from L1 signal recorded at the rate of 50 Hz.
P. Prikryl, R. Ghoddousi-Fard, B. S. R. Kunduri, E. G. Thomas, A. J. Coster, P. T. Jayachandran, E. Spanswick, D. W. Danskin   +7 more
doaj   +1 more source

Effects of GNSS receiver tuning on the PLL tracking jitter estimation in the presence of ionospheric scintillation

, 2020
Ionospheric scintillation is an interference characterized by rapid and random fluctuations inradio frequency signals when passing through irregularities in the ionosphere.
S. Vadakke Veettil, Aquino, M., K. Guo, M. Aquino, Guo, K., Vadakke Veettil, S.   +5 more
core   +1 more source

Geomagnetic storm-time scintillation study in Antarctica - A comparison of model and observation

, 2021
The polar region is the gateway of the magnetospheric processes induced due to the solar events; through which Sun-illuminated plasma enter into the polar ionosphere.
S. Priyadarshi, Q.-H. Zhang, Y. Wang, Priyadarshi, S., Wang, Y., Zhang, Q.-H.   +5 more
core   +1 more source