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A Novel System for the Measurement of an Evaporation Duct Using the Magnetic Coupling Principle for Power Feeding and Data Transmission [PDF]

open access: yesSensors, 2022
Since the evaporation duct height (EDH) only covers the antenna height of most shipborne microwave radars, mastering the EDH in advance has great significance in achieving long-range target detection.
Qiang Wang   +6 more
doaj   +2 more sources

Application of the PJ and NPS evaporation duct models over the South China Sea (SCS) in winter. [PDF]

open access: yesPLoS ONE, 2017
The detection of duct height has a significant effect on marine radar or wireless apparatus applications. The paper presents two models to verify the adaptation of evaporation duct models in the SCS in winter. A meteorological gradient instrument used to
Shaobo Yang   +4 more
doaj   +2 more sources

Research on a Multimodel Fusion Diagnosis Method for Evaporation Ducts in the East China Sea [PDF]

open access: yesSensors, 2023
Evaporation ducts are abnormal states of the atmosphere in the air–sea boundary layer that directly affect the propagation trajectory of electromagnetic (EM) waves.
Cheng Zhang   +8 more
doaj   +2 more sources

Near-Surface Thermodynamic Influences on Evaporation Duct Shape

open access: yesAtmosphere
This study utilizes in situ measurements and numerical weather prediction forecasts curated during the Coupled Air–Sea Processes Electromagnetic Ducting Research (CASPER) east field campaign to assess how thermodynamic properties in the marine ...
Sarah E. Wessinger   +3 more
doaj   +2 more sources

Variability of Silver Fir Needle (Abies alba Mill.) Anatomical Features in the Southeast Europe Natural Populations [PDF]

open access: yesPlants
The survival of marginal/peripheral silver fir (Abies alba Mill.) populations in the broader region of Southeast Europe is endangered due to climate change and population decline. This study aimed to determine the level and pattern of variability for the
Vladan Popović   +6 more
doaj   +2 more sources

Deep Learning Method for Evaporation Duct Inversion Based on GPS Signal

open access: yesAtmosphere, 2022
Accurate evaporation duct prediction is one of the critical technologies for realizing the over-the-horizon impact of marine communication, ship radar, and other systems.
Ming-Yu Cui, Yu Zhang
doaj   +1 more source

Experimental Analysis of Atmospheric Ducts and Navigation Radar Over-the-Horizon Detection

open access: yesRemote Sensing, 2022
Since the height of sea detection radar antenna and ship targets is relatively low, it is generally believed that its over-the-horizon detection is mainly caused by the evaporation duct at sea.
Li-Feng Huang   +7 more
doaj   +1 more source

Time Series Analysis of Evaporation Duct Height over South China Sea: A Stochastic Modeling Approach

open access: yesAtmosphere, 2021
The evaporation duct could significantly affect the work status of maritime microwave communication systems in the South China Sea. Therefore, the exact forecasting of the evaporation duct is vital for the normal operation of the systems.
Fei Hong, Qi Zhang
doaj   +1 more source

NWPP-EDH: Numerical weather prediction products evaporation duct regional prediction model

open access: yesFrontiers in Earth Science, 2023
The evaporation duct is a special atmospheric stratification that can affect the propagation path of electromagnetic waves at sea, thus it is crucial for the ability of the radio communication systems.
Xingyu Chai   +5 more
doaj   +1 more source

Atmospheric Ducts and Their Electromagnetic Propagation Characteristics in the Northwestern South China Sea

open access: yesRemote Sensing, 2023
The propagation of electromagnetic waves beyond the line of sight can be caused by atmospheric ducts, which are significant concerns in the fields of radar and communication.
Ning Yang, Debin Su, Tao Wang
doaj   +1 more source

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