Results 61 to 70 of about 42,321 (217)

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

Ionospheric Mechanisms Leading to Plasma‐Bubble Zonal Drift Reversal and Deformation During the 12 November 2025 Geomagnetic Storm

Space Weather, Volume 24, Issue 10, October 2026.
Abstract We present a multi‐instrument analysis of the ionospheric response to the intense geomagnetic storm of 12 November 2025 over the American sector, with emphasis on the longitudinally asymmetric deformation, latitudinal expansion, and zonal drift reversal of equatorial plasma bubbles (EPBs).
G. A. S. Picanço, I. Galkin, P. Song, E. Astafyeva, L. C. A. Resende, J. P. Marchezi, L. A. da Silva, P. R. Fagundes, C. M. Denardini, C. Martinis, A. M. Santos, V. G. Pillat, A. J. Coster, A. L. Christovam, S. R. Laranja, M. A. M. Lopes   +15 more
wiley   +1 more source

Morphological and ionospheric aspects of quasiperiodic scintillations

, 1977
Mult́i-satellite scintillations, at a transmission frequency of 150 MHz, and associated vertical-incidence ionosonde data were recorded at Brisbane from November 1973-January 1976. A distinct type of regular amplitude fadings, so-called quasiperiodic (QP)
Hajkowicz L.A.
core   +1 more source

Signal statistics of equatorial nighttime ionospheric scintillations

, 1980
Cumulative probability distribution functions of equatorial nighttime ionospheric scintillations are studied and are found to agree well with the Nakagami m distribution. Relationship between percentage occurrence of scintillations and S 4 index has been
Krishna Murthy, B. V., Krishna Moorthy, K., Raghava Reddi, C.   +2 more
core   +1 more source

Statistical Analysis of the Occurrence of Ionospheric Scintillations at the Low-Latitude Sanya Station During 2004–2021

Remote Sensing
The ionosphere of the Earth often becomes turbulent and develops electron density irregularities that can cause rapid and random changes in the amplitude and phase of radio signals, which is known as ionospheric scintillation.
Bo Xiong, Changhao Yu, Xiaolin Li, Yuxiao Li, Lianhuan Hu, Yuqing Wang, Lingxiao Du, Yuxin Wang   +7 more
doaj   +1 more source

ScintPi 4.0: A New GNSS‐Based Low‐Cost, Multi‐Constellation, Multi‐Frequency Ionospheric Scintillation and TEC Monitor for Education, Citizen Science, and Research Initiatives

Space Weather, Volume 24, Issue 10, October 2026.
Abstract ScintPi is a series of alternative ionospheric scintillation and total electron content (TEC) monitors. ScintPi monitors have been built by combining single‐board computers (Raspberry Pi) and commercial off‐the‐shelf (COTS) Global Navigation Satellite System (GNSS) receivers.
Isaac G. Wright, Josemaria Gomez Socola, Fabiano S. Rodrigues, Mário A. N. Azevedo Filho   +3 more
wiley   +1 more source

TRACERS Small‐Scale Field‐Aligned Currents and Intense GPS Amplitude and Phase Scintillations in the Nightside Auroral Region

Geophysical Research Letters
We present conjugate observations of ionospheric small‐scale magnetic perturbations (dB) and GPS scintillations from the Tandem Reconnection and Cusp Electrodynamics Reconnaissance Satellites (TRACERS) and the Canadian High Arctic Ionospheric Network ...
Yangyang Shen, Robert J. Strangeway, Hao Cao, James M. Weygand, Jiashu Wu, Anthony McCaffrey, P. T. Jayachandran, Daniel Billett, Magnus F. Ivarsen, Christopher Watson, Sheng Tian, Marit Oieroset, David Miles   +12 more
doaj   +1 more source

A Gaussian Process Regression Framework for Slant Ionospheric Delay Interpolation and Uncertainty Quantification With Applications to PPP‐RTK

Space Weather, Volume 24, Issue 10, October 2026.
Abstract Reliable slant ionospheric information is crucial for Precise Point Positioning Real‐time Kinematic (PPP‐RTK), yet its correction in low‐latitude regions remains difficult because of ionospheric variability, observable anomalies, and insufficiently reliable uncertainty characterization.
Gaojian Zhang, Qile Zhao, Jun Tao, Yihao Jiang, Jie Zhang   +4 more
wiley   +1 more source

Ionospheric scintillations modelling by MPS and MPC phase screens methods

, 2002
GPS navigation and SAR imaging systems performances depend on correct characterization of perturbations due to electromagnetic wave propagation through turbulent media such as ionosphere or troposphere.
Caouren, N., N. Caouren
core   +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