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Modeling on multi‐eigenpath channel in marine atmospheric duct
Radio Science, 2009A 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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Background covariance of atmospheric duct properties based on ensembles
2015 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium), 2015In Refractivity Data Fusion (RDF), the Cartesian representation of refractivity calculated from the Numerical Weather Prediction (NWP) output is mapped into a set of 2-dimensional diagnostic variables which are surfaces over the NWP domain. The diagnostic parameters (e.g. duct base height, duct strength, duct thickness, evaporation duct height) include
Neil D. Gordon +4 more
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Propagation of the transient electromagnetic field above atmospheric surface duct
Applied Mathematics and Computation, 2003zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Analysis of Ultra-short Wave Propagation in Atmospheric Duct
2018 12th International Symposium on Antennas, Propagation and EM Theory (ISAPE), 2018Aiming 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, 2007This 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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A Radar Sea Clutter Model for Atmospheric Ducting Conditions
1984Abstract : 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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Carcinoma of the Extrahepatic Bile Ducts
Ca-A Cancer Journal for Clinicians, 1969R D Brasfield
exaly
Observed characteristics of atmospheric ducts over the South China Sea in autumn
Chinese Journal of Oceanology and Limnology, 2015Yinhe Cheng +2 more
exaly
Application of satellite data assimilation in monitoring the atmospheric duct
Earth Observing Systems XXIV, 2019Xiaojing 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), 2021openaire +1 more source