Wideband spectrum analysis of ultra-high frequency radio-wave signals due to advanced one-phonon non-collinear anomalous light scattering

2017 ◽  
Vol 56 (12) ◽  
pp. 3402 ◽  
Author(s):  
Alexandre S. Shcherbakov ◽  
Adan Omar Arellanes
Keyword(s):  
Light Scattering ◽  
Radio Wave ◽  
Spectrum Analysis ◽  
High Frequency ◽  
Ultra High Frequency

Acousto-optical spectrum analysis of ultra-high-frequency radio-wave analogue signals with an improved resolution exploiting the collinear acoustic wave heterodyning

Optik ◽  
2010 ◽  
Vol 121 (16) ◽  
pp. 1497-1506 ◽  
Author(s):  
Alexandre S. Shcherbakov ◽  
Alexey M. Bliznetsov ◽  
Abraham Luna Castellanos ◽  
Daniel Sanchez Lucero
Keyword(s):  
Acoustic Wave ◽  
Radio Wave ◽  
Spectrum Analysis ◽  
High Frequency ◽  
Optical Spectrum ◽  
Ultra High Frequency ◽  
Analogue Signals

On the necessary complexity of modeling of the Polar Mesosphere Summer Echo Overshoot Effect

2012 ◽  
Vol 78 (3) ◽  
pp. 225-239 ◽  
Author(s):  
ALEXANDER BIEBRICHER ◽  
OVE HAVNES ◽  
RADOVAN BAST
Keyword(s):  
Experimental Data ◽  
Radio Wave ◽  
High Frequency ◽  
Characteristic Curve ◽  
Very High Frequency ◽  
Ultra High Frequency ◽  
Incoherent Scatter ◽  
Numerical Studies ◽  
Electrons And Ions ◽  
Very High

AbstractRecent numerical studies of the Polar Mesosphere Summer Echo (PMSE) Overshoot Effect predict the basic shape of the Overshoot Characteristic Curve (OCC) to undergo dramatic changes as the frequency of the radar decreases. Principally, this may render earlier modeling, which assumed near-instantaneous diffusion of electrons and ions, moot and exacerbate algebraic analysis of OCC obtained in the future with, e.g. the MORRO-radar (56 MHz) and a synchronized radio wave emitter, both at or near the European Incoherent Scatter (EISCAT) Scientific Association's site in Ramfjordmoen near Tromsø, Norway. Since, however, by far the most observational results on the PMSE Overshoot Effect have been assembled with the help of the Very High Frequency (VHF, 224 MHz) radar and the an Ultra High Frequency (UHF, 929 MHz) radar, both at the EISCAT site, we examine more closely whether near-instantaneous diffusion is a valid assumption for these particular frequencies. We show that, indeed, the earlier less complex and analytically more accessible model can still be considered sufficient for most, if not all, existing experimental data.

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