Results 11 to 20 of about 71,360 (201)

A Review of Ionospheric Scintillation Models [PDF]

Surveys in Geophysics, 2015
This is a general review of the existing climatological models of ionospheric radio scintillation for high and equatorial latitudes. Trans-ionospheric communication of radio waves from transmitter to user is affected by the ionosphere which is highly variable and dynamic in both time and space. Scintillation is the term given to irregular amplitude and
Priyadarshi S.
exaly   +7 more sources

Analysis of Ionospheric Scintillation Characteristics in Sub-Antarctica Region with GNSS Data at Macquarie Island [PDF]

Sensors, 2017
Ionospheric scintillation has a great impact on radio propagation and electronic system performance, thus is extensively studied currently. The influence of scintillation on Global Navigation Satellite System (GNSS) is particularly evident, making GNSS ...
Kai Guo, Yang Liu, Yan Zhao, Jinling Wang   +3 more
doaj   +2 more sources

Ionospheric scintillation monitoring and modelling [PDF]

Annals of Geophysics, 2009
This paper presents a review of the ionospheric scintillation monitoring and modelling by the European groups involved in COST 296. Several of these groups have organized scintillation measurement campaigns at low and high latitudes. Some characteristic results obtained from the measured data are presented.
Beniguel, Y., Romano, V., Alfonsi, L., Aquino, M., Bourdillon, A., Cannon, P., De Franceschi, G., Dubey, S., Gherm, V., Forte, B., Jakowski, Norbert, Materassi, M., Noack, Thoralf, Pozoga, M., Rogers, N., Spalla, P., Strangeways, H., Warrington, M., Wernik, A., Wilken, Volker, Zernov, N.   +20 more
openaire   +9 more sources

Modeling of ionospheric scintillation [PDF]

Journal of Space Weather and Space Climate, 2022
A signal, such as from a GNSS satellite or microwave sounding system, propagating in the randomly inhomogeneous ionosphere, experiences chaotic modulations of its amplitude and phase. This effect is known as scintillation. This article reviews basic theoretical concepts and simulation strategies for modeling the scintillation phenomenon. We focused our
Vasylyev, Dmytro, Beniguel, Yannick, Wilken, Volker, Kriegel, Martin, Berdermann, Jens   +4 more
openaire   +4 more sources

Detection of Ionospheric Scintillation Based on XGBoost Model Improved by SMOTE-ENN Technique

Remote Sensing, 2021
Ionospheric scintillation frequently occurs in equatorial, auroral and polar regions, posing a threat to the performance of the global navigation satellite system (GNSS). Thus, the detection of ionospheric scintillation is of great significance in regard
Xinhua Tang, Xiyuan Chen, Xuefen Zhu
exaly   +3 more sources

The ionospheric scintillation phenomenon

, 2022
The SAGAIE network was deployed in West-Africa in 2013 to assess the feasibility of an equatorial for ASECNA SBAS by studying ionospheric scintillation. This study of the network’s measurements, taken between 2013 and 2016, analyzes the characteristics of the scintillation recorded by five receivers that cover Sub-Saharan West-Africa.
Galmiche, Aurelien, Trilles, Sébastien, Rougerie, Sébastien, Fabbro, Vincent, Féral, Laurent, Lapie, Julie, Bakienon, Louis   +6 more
core   +6 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.
Paul S.J. Spencer
doaj   +3 more sources

Discovery of Regular Daily Ionospheric Scintillation

Atmosphere
The aim of this study was to find out whether, just like in March 2015, daily regular GPS positioning disturbances caused by ionospheric scintillations occurred in other months of the solar activity cycle 24.
Janis Balodis, Madara Normand, Ingus Mitrofanovs   +2 more
doaj   +2 more sources

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, Groves, Keith, Rogers, Neil   +2 more
core   +5 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.
Davies, Jackie, Breen, Andy, Rouillard, Alexis, Fallows, Richard, Brown, Daniel, Dorrian, Gareth   +5 more
core   +6 more sources