Ionospheric Effects on Microwave Signals

2013 ◽  
pp. 35-71 ◽  
Author(s):  
Mahdi M. Alizadeh ◽  
Dudy D. Wijaya ◽  
Thomas Hobiger ◽  
Robert Weber ◽  
Harald Schuh
Keyword(s):  
Ionospheric Effects ◽  
Microwave Signals

scholarly journals Quantifying ionospheric effects on global 21-cm observations

2021 ◽  
Vol 503 (1) ◽  
pp. 344-353
Author(s):  
Emma Shen ◽  
Dominic Anstey ◽  
Eloy de Lera Acedo ◽  
Anastasia Fialkov ◽  
Will Handley
Keyword(s):  
Parameter Space ◽  
Spatial Model ◽  
Ionospheric Effects ◽  
Temporal Variance ◽  
Foreground Calibration ◽  
Over Time

ABSTRACT We modelled the two major layer of Earth’s ionosphere, the F-layer and the D-layer, by a simplified spatial model with temporal variance to study the chromatic ionospheric effects on global 21-cm observations. From the analyses, we found that the magnitude of the ionospheric disruptions due to ionospheric refraction and absorption can be greater than the expected global 21-cm signal, and the variation of its magnitude can differ, depending on the ionospheric conditions. Within the parameter space adopted in the model, the shape of the global 21-cm signal is distorted after propagating through the ionosphere, while its amplitude is weakened. It is observed that the ionospheric effects do not cancel out over time, and thus should be accounted for in the foreground calibration at each timestep to account for the chromaticity introduced by the ionosphere.

Ionospheric Effects on HF Radio Wave Propagation

2021 ◽  
pp. 439-492
Author(s):  
Manuel A. Cervera ◽  
Trevor J. Harris ◽  
David A. Holdsworth ◽  
David J. Netherway
Keyword(s):  
Wave Propagation ◽  
Radio Wave ◽  
Radio Wave Propagation ◽  
Ionospheric Effects

scholarly journals On the ionospheric effects of 26 June, 1999 solar flare

2012 ◽  
Vol 1 (2) ◽  
pp. 179-185
Author(s):  
A. Abseim ◽  
M. Youssef ◽  
S.M. Youssef ◽  
Magdy Y. Amin ◽  
M.G. Rashed ◽  
...  
Keyword(s):  
Solar Flare ◽  
Ionospheric Effects

Ionospheric effects of the gravity wave launched by the September 18, 1974, sudden commencement

1978 ◽  
Vol 83 (A3) ◽  
pp. 999 ◽  
Author(s):  
R. G. Roble ◽  
A. D. Richmond ◽  
W. L. Oliver ◽  
R. M. Harper
Keyword(s):  
Gravity Wave ◽  
Sudden Commencement ◽  
Ionospheric Effects
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