GUVI Biblio





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Found 4 entries in the Bibliography.


Showing entries from 1 through 4


2014

Modelling ionospheric effects for L band GNSS receivers at high latitudes

The main objective of this study was to figure out a relationship between space weather environment phenomena (linked to solar and geomagnetic activity) and ionospheric events that impact L-band operating satellite systems (scintillations, electron content gradients), especially satellite navigation services, in the Nordic European area. A simple empirical model to forecast index of rate of change of the total electron content (ROTI) at high latitude has been developed associated with Kp geomagnetic prediction and the use ...

Boscher, D.; Carvalho, F.; Fabbro, V.; Lemorton, J.; Fleury, R.;

Published by:       Published on:

YEAR: 2014     DOI: 10.1109/EuCAP.2014.6902380

high latitude; Ionosphere; radiowave propagation; scintillation; solar and geomagnetic activity

2013

Impacts of atmospheric ultrafast Kelvin waves on radio scintillations in the equatorial ionosphere

We present a statistical analysis of the amplitudes of GPS scintillations (S4 index) observed throughout 2008\textendash2010 using the satellite radio occultation measurements of the Constellation Observing System for Meteorology, Ionosphere, and Climate (COSMIC). Here, for the first time, periodic variability in the occurrence of S4 is investigated using these data. Significant variations of S4 with periods of 2.5\textendash4 days (quasi-3 days) are identified from the observations during postsunset hours (1900\textendas ...

Liu, Guiping; Immel, Thomas; England, Scott; Frey, Harald; Mende, Stephen; Kumar, Karanam; Ramkumar, Geetha;

Published by: Journal of Geophysical Research: Space Physics      Published on: 02/2013

YEAR: 2013     DOI: 10.1002/jgra.50139

day-to-day variability; Equatorial ionosphere; scintillation; Ultra Fast Kelvin planetary wave

2012

An empirical model of the drift velocity of equatorial plasma depletions

The Far-Ultraviolet Imager on the IMAGE spacecraft (IMAGE-FUV) has been used to observe O+plasma depletions in the post-sunset equatorial ionosphere. Small-scale density irregularities associated with such depletions are believed to adversely affect trans-ionospheric radio signals such as GPS. Prediction of the motion of these plasma depletions is a necessary component of the ability to forecast the occurrence of such radio signal interference. An automated method has recently been developed to identify and tra ...

England, S.; Immel, T.;

Published by: Journal of Geophysical Research: Space Physics      Published on: 12/2012

YEAR: 2012     DOI: 10.1029/2012JA018091

Ionosphere; plasma drift; scintillation

2010

Coordinated UV imaging of equatorial plasma bubbles using TIMED/GUVI and DMSP/SSUSI

Comberiate, Joseph; Paxton, L.;

Published by: Space Weather      Published on: Jan-01-2010

YEAR: 2010     DOI: 10.1029/2009SW000546

Equatorial ionosphere; ionospheric irregularities; scintillation



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