Ionospheric electron heating, optical emissions, and striations induced by powerful HF radio waves at high latitudes: Aspect angle dependence [PDF]
, 2003 In recent years, large electron temperature increases of 300% (3000 K above background) caused by powerful HF-radio wave injection have been observed during nighttime using the EISCAT incoherent scatter radar near Tromsø in northern Norway.
Rietveld, M. T. +5 more
core +5 more sources
The role of natural E-region plasma turbulence in the enhanced absorption of HF radio waves in the auroral ionosphere:Implications for RF heating of the auroral electrojet [PDF]
Annales Geophysicae, 1994 Physical processes which affect the absorption of radio waves passing through the auroral E-region when Farley-Buneman irregularities are present are examined.
T. R. Robinson
doaj +1 more source
A tunable metamaterial absorber using varactor diodes
New Journal of Physics, 2013 We present the design, analysis and measurements of a polarization-insensitive tunable metamaterial absorber with varactor diodes embedded between metamaterial units.
Jie Zhao +5 more
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Propagation of Electromagnetic Wave into an Illuminated Polysilicon PV Cell
International Journal of Antennas and Propagation, 2020 The increasing cohabitation between telecommunication antennas generating electromagnetic waves and solar panels poses the problem of interaction between these radio waves and solar cells. In order to study the effect of radio waves on the performance of
Vinci de Dieu Bokoyo Barandja +5 more
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Experimental simulation of satellite observations of 100 kHz radio waves from relativistic electron beams above thunderclouds [PDF]
Atmospheric Chemistry and Physics, 2011 Relativistic electron beams above thunderclouds emit 100 kHz radio waves which illuminate the Earth's atmosphere and near-Earth space. This contribution aims to clarify the physical processes which are relevant for the spatial spreading of the radio ...
M. Füllekrug, C. Hanuise, M. Parrot
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Time-frequency analysis-based deep interference classification for frequency hopping system
EURASIP Journal on Advances in Signal Processing, 2022 It is known that interference classification plays an important role in protecting the authorized communication system and avoiding its performance degradation in the hostile environment.
Changzhi Xu +6 more
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Electromagnetic manifestation of the lithosphere in the ULF-VLF range
Геофизический журнал, 2012 Brief analysis of the current state of research in natural electromagnetic field at the Earth’s surface in the SLF-VLF range has been conducted. A set of estimations of field levels ratios of lithospheric and storm origin has been made. It has been shown
V. N. Uvarov
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Scattering Characteristics of Targets above a Rough Surface in SAR Images
International Journal of Antennas and Propagation, 2013 The modeling, simulation, and analysis of target characteristics are essential to a synthetic aperture radar (SAR) image-based autotarget recognition (ATR) system.
Bo Zhao, Tie Jun Cui
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Excitation of plasma waves by unstable photoelectron and thermal electron populations on closed magnetic field lines in the Martian ionosphere [PDF]
Annales Geophysicae, 2005 It is argued that anisotropic electron pitch angle distributions in the closed magnetic field regions of the Martian ionosphere gives rise to excitation of plasma instabilities.
N. Borisov, N. Borisov, E. Nielsen
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ENHANCEMENT OF BANDWIDTH AND BEAM FORMING ANTENNA ARRAYS IN 5G CELLULAR COMMUNICATION NETWORKS
ICTACT Journal on Communication Technology, 2022 In general, an antenna is an interface that transmits signal data and receives incoming signal data. The radio waves received through this interface help to do the necessary things for the transmitter and receiver circuit systems used there. Also a radio
Mohammad Shahnawaz Shaikh +3 more
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