Results 31 to 40 of about 2,215 (219)

VARIATIONS OF IONOSPHERIC SCINTILLATION INDEX FOR THE SHORT-TIME INTERVALS OBSERVED ON THE POWER COSMIC RADIO SOURCES AT THE DECAMETER WAVELENGTHS

Radio Physics and Radio Astronomy, 2017
Purpose: Variations of ionospheric scintillation index of the power cosmic radio sources (3С144, 3С274, 3С405, and 3С461) observed for the year-to-day time intervals with the radio telescope at the decameter wavelengths are analyzed.
O. A. Lytvynenko, S. K. Panishko
doaj   +1 more source

SEPARATING NIGHTSIDE INTERPLANETARY AND IONOSPHERIC SCINTILLATION WITH LOFAR [PDF]

The Astrophysical Journal Letters, 2016
ABSTRACT Observation of interplanetary scintillation (IPS) beyond Earth-orbit can be challenging due to the necessity to use low radio frequencies at which scintillation due to the ionosphere could confuse the interplanetary contribution. A recent paper by Kaplan et al.
R. A. Fallows, M. M. Bisi, B. Forte, Th. Ulich, A. A. Konovalenko, G. Mann, C. Vocks   +6 more
openaire   +2 more sources

Improving the GNSS positioning stochastic model in the presence of ionospheric scintillation [PDF]

, 2009
Ionospheric scintillations are caused by time-varying electron density irregularities in the ionosphere, occurring more often at equatorial and high latitudes.
Dodson, A. H., De Franceschi, G., Marques, H. [UNESP], Aquino, M., Monico, J. F. G., Monico, J. F. G. [UNESP], Romano, V., Alfonsi, L., Marques, H., Alfonsi, Lu., Andreotti, M.   +10 more
core   +1 more source

Estimation and correction of scintillation effects on spaceborne P-band SAR images

, 2012
A correction method for distortions induced by ionospheric scintillation effects on P-band quad-pol synthetic aperture radar (SAR) data acquired in polar and high latitude regions is presented.
Konstantinos P. Papathanassiou, Papathanassiou, Kostas, Jun Su Kim, Shaun Quegan, Quegan, Shaun, Rogers, Neil, Kim, Jun Su, Papathanassiou, Konstantinos, Neil Rogers   +8 more
core   +1 more source

Probing the high latitude ionosphere from ground-based observations: The state of current knowledge and capabilities during IPY (2007-2009) [PDF]

, 2008
During the International Polar Year (IPY), one area of great interest is co-coordinated, multi-instrument probing of the ionosphere at high latitudes. This region is important not only for the applications that rely upon our understanding of it, but also
Freeman, M., Mitchell, C. N., Liu, R., Luntama, J.-P., Alfonsi, Lucilla, Kauristie, Kirsti, Cilliers, Pierre, Correia, Emilia, Zherebtsov, G. A., Mitchell, C.N., Freeman, Mervyn, Mitchell, Cathryn N., Kavanagh, Andrew J., Alfonsi, Lu., Zherebtsov, G.A., Kauristie, K., Freeman, M.P., Amata, E., Kavanagh, A.J., Liu, Ruiyuan, Correia, E., Amata, Ermanno, Kavanagh, A. J., Luntama, Juha-Pekka, Alfonsi, L., Luntama, J-P., Cilliers, P.   +26 more
core   +1 more source

An interhemispheric comparison of GPS phase scintillation with auroral emission observed at the South Pole and from the DMSP satellite

Annals of Geophysics, 2013
The global positioning system (GPS) phase scintillation caused by high-latitude ionospheric irregularities during an intense high-speed stream (HSS) of the solar wind from April 29 to May 5, 2011, was observed using arrays of GPS ionospheric ...
Paul Prikryl, Yongliang Zhang, Yusuke Ebihara, Reza Ghoddousi-Fard, Periyadan T. Jayachandran, Joe Kinrade, Cathryn N. Mitchell, Allan T. Weatherwax, Gary Bust, Pierre J. Cilliers, Luca Spogli, Lucilla Alfonsi, Vincenzo Romano, Baiqi Ning, Guozhu Li, Martin J. Jarvis, Donald W. Danskin, Emma Spanswick, Eric Donovan, Mike Terkildsen   +19 more
doaj   +1 more source

Scintillation Effects in S-Band Telemetry Link of INPE’s Earth Station in Cuiaba-Brazil [PDF]

Radioengineering, 2021
One of the main earth stations that INPE uses to track and control its satellites is located in the city of Cuiaba (15.33°S, 56.46°W, dip latitude, 6.1°S), between the magnetic equator and the peak of the equatorial anomaly.
A. M. P. de Lucena, F. de A. T. F. da Silva, A. S. da Silva   +2 more
doaj  

Anisotropic ionospheric scintillation in weak scattering regime [PDF]

, 2023
Transionospheric radio signals might undergo random modulations of their amplitude and phase caused by scattering on irregular structures in the ionosphere.
Volker Wilken, Martin Kriegel, Dmytro Vasylyev, Jens Berdermann, Beniguel, Yannick, Wilken, Volker, Kriegel, Martin, Berdermann, Jens, Yannick Béniguel, Vasylyev, Dmytro   +9 more
core   +1 more source

GPS scintillations and total electron content climatology in the southern low, middle and high latitude regions

Annals of Geophysics, 2013
In recent years, several groups have installed high-frequency sampling receivers in the southern middle and high latitude regions, to monitor ionospheric scintillations and the total electron content (TEC) changes.
Luca Spogli, Lucilla Alfonsi, Pierre J. Cilliers, Emília Correia, Giorgiana De Franceschi, Cathryn N. Mitchell, Vincenzo Romano, Joe Kinrade, Miguel Angel Cabrera   +8 more
doaj   +1 more source

Ionospheric scintillation intensity fading characteristics and GPS receiver tracking performance at low latitudes

, 2019
Ionospheric scintillation refers to rapid fluctuations in signal amplitude/phase when radio signals propagate through irregularities in the ionosphere.
Guo, Kai, Veetill, Sreeja Vadakke, Aquino, Marcio   +2 more
core   +1 more source