Results 21 to 30 of about 187,706 (222)

Markov Chain‐Based Stochastic Modeling of Deep Signal Fading: Availability Assessment of Dual‐Frequency GNSS‐Based Aviation Under Ionospheric Scintillation

Space Weather, 2021
Deep signal fading due to ionospheric scintillation severely impacts global navigation satellite system (GNSS)‐based applications. GNSS receivers run the risk of signal loss under deep fading, which directly leads to a significant decrease in navigation ...
Andrew K. Sun, Hyeyeon Chang, S. Pullen, H. Kil, Jiwon Seo, Y. Jade Morton, Jiyun Lee   +6 more
semanticscholar   +1 more source

Mitigating high latitude ionospheric scintillation effects on GNSS Precise Point Positioning exploiting 1-s scintillation indices

Journal of Geodesy, 2021
Ionospheric scintillation refers to rapid and random fluctuations in radio frequency signal intensity and phase, which occurs more frequently and severely at high latitudes under strong solar and geomagnetic activity. As one of the most challenging error
K. Guo, S. Vadakke Veettil, B. Weaver, M. Aquino   +3 more
semanticscholar   +1 more source

Ionospheric Phase Scintillation Index Estimation Based on 1 Hz Geodetic GNSS Receiver Measurements by Using Continuous Wavelet Transform

Space Weather, 2022
The adverse effect of the ionospheric scintillation on Global Navigation Satellite System (GNSS) requires scintillation monitoring on a global scale.
Dongsheng Zhao, Wang Li, Chendong Li, Xu Tang, Qianxin Wang, Craig M. Hancock, Gethin Wyn Roberts, Kefei Zhang   +7 more
doaj   +1 more source

Climatology of GPS phase scintillation at northern high latitudes for the period from 2008 to 2013 [PDF]

Annales Geophysicae, 2015
Global positioning system scintillation and total electron content (TEC) data have been collected by ten specialized GPS Ionospheric Scintillation and TEC Monitors (GISTMs) of the Canadian High Arctic Ionospheric Network (CHAIN).
P. Prikryl, P. Prikryl, P. T. Jayachandran, R. Chadwick, T. D. Kelly   +4 more
doaj   +1 more source

Ionospheric Scintillation Prediction on S4 and ROTI Parameters Using Artificial Neural Network and Genetic Algorithm

Remote Sensing, 2021
Irregularities in electron density usually correlate with ionospheric plasma perturbations. These variations causing radio signal fluctuations, in response, generate ionospheric scintillations that frequently occur in low-latitude regions.
A. Atabati, M. M. Alizadeh, H. Schuh, L. Tsai   +3 more
semanticscholar   +1 more source

A comparison of satellite scintillation measurements with HF radar backscatter characteristics [PDF]

Annales Geophysicae, 2005
We examine the correspondence between high latitude ionospheric scintillation measurements made at 250MHz with the occurrence of 10MHz HF coherent radar backscatter, on 13 and 14 December 2002.
S. E. Milan, S. Basu, T. K. Yeoman, R. E. Sheehan   +3 more
doaj   +1 more source

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

PECULIARITIES IN THE IONOSPHERIC SCINTILLATION SPECTRAL INDEX BEHAVIOR BY OBSERVATIONS OF THE COSMIC RADIO SOURCES AT THE DECAMETER WAVELENGTHS

Radio Physics and Radio Astronomy, 2019
Purpose: With relation to radio astronomy, ionospheric scintillation of discrete cosmic radio sources is an undesirable effect. At the same time, ionospheric scintillations carry information on the ionospheric turbulence and are a separate object of ...
S. K. Panishko, O. A. Lytvynenko
doaj   +1 more source

Statistical models to provide meaningful information to GNSS users in the presence of ionospheric scintillation

GPS Solutions, 2021
Ionospheric scintillation is one of the most challenging problems in Global Navigation Satellite Systems (GNSS) positioning and navigation. Scintillation occurrence can not only lead to an increase in the probability of losing the GNSS signal lock but ...
S. Vadakke Veettil, M. Aquino
semanticscholar   +1 more source

Broadband meter‐wavelength observations of ionospheric scintillation [PDF]

Journal of Geophysical Research: Space Physics, 2014
AbstractIntensity 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. With Low‐Frequency Array (LOFAR) technology at the Kilpisjärvi Atmospheric Imaging Receiver Array (KAIRA) station in northern Finland ...
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