Results 231 to 240 of about 2,709 (248)
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Propagation of the transient electromagnetic field above atmospheric surface duct

Applied Mathematics and Computation, 2003
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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A narrow-angle parabolic equation model in atmospheric ducts

2016 11th International Symposium on Antennas, Propagation and EM Theory (ISAPE), 2016
In this paper, the narrow-angle parabolic equation (NAPE) model applied on atmospheric ducts is solved by using the improved discrete mixed Fourier transform (IDMFT) method which is an efficient form of the split-step Fourier transform (SSFT) algorithm under the impedance boundary conditions.
Yajiao Wang, Lixin Guo, Qingliang Li
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Modeling on multi‐eigenpath channel in marine atmospheric duct

Radio Science, 2009
A multi‐eigenpath channel model is proposed to simulate the microwave transhorizon communication signal in marine atmospheric duct environment. The channel model identifies the relation between multiperiodical delay components and subeigenpath components. The simplified algorithm of subeigen signal is proposed on the basis on signal‐to‐multipath ratio.
Xiao‐long Zhao   +2 more
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Analysis of Ultra-short Wave Propagation in Atmospheric Duct

2018 12th International Symposium on Antennas, Propagation and EM Theory (ISAPE), 2018
Aiming at the phenomenon of Ship-borne AIS over-the-horizon communication in some area in the Yellow Sea in June 2, 2018, which influenced by atmospheric duct, the atmospheric duct is calculated by using the atmospheric temperature and humidity profiles measured at that time.
Haichuan Tang   +3 more
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Tracking atmospheric ducts using radar clutter: evaporation duct tracking using kalman filters

2007 IEEE Antennas and Propagation Society International Symposium, 2007
This paper addresses the problem of tracking evaporation ducts in marine environments. The method tracks the evolution of the range and height-dependent index of refraction using the radar sea clutter. A split-step fast Fourier transform (FFT) based parabolic equation (PE) approximation to the wave equation is used to compute the clutter return in ...
Caglar Yardim   +2 more
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The effect of atmospheric duct on modern OFDM-based digital broadcasting systems

33rd European Microwave Conference Proceedings (IEEE Cat. No.03EX723C), 2003
The aim of this paper is to investigate the effect of atmospheric ducts on modern OFDM-based broadcasting systems in VHF, UHF and L bands. Full-wave parabolic equation method will be used for calculation of electromagnetic field strength in time domain.
Homayoon Oraizi, Shahram Hosseinzadeh
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A Radar Sea Clutter Model for Atmospheric Ducting Conditions

1984
Abstract : The Integrated Refractive Effects Prediction System (IREPS) should consider sea clutter effects under atmospheric ducting conditions. The IREPS, undergoing research and development at Naval Ocean Systems Center (NOSC), is intended to provide a shipboard environmental data processing and display capability to assess refractive effects of the ...
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Application of satellite data assimilation in monitoring the atmospheric duct

Earth Observing Systems XXIV, 2019
Xiaojing Hao   +3 more
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Propagation loss of radio wave in atmospheric duct environment

2021 13th International Symposium on Antennas, Propagation and EM Theory (ISAPE), 2021
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Observed characteristics of atmospheric ducts over the South China Sea in autumn

Chinese Journal of Oceanology and Limnology, 2015
Yinhe Cheng   +2 more
exaly  

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