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Analysis of the accuracy of using ERA5 reanalysis data for diagnosis of evaporation ducts in the East China Sea [PDF]

open access: goldFrontiers in Marine Science, 2023
Evaporation ducts are a phenomenon that occurs with extremely high frequency at the boundary between the atmosphere and the ocean. Because they directly affect the propagation of electromagnetic waves, it is necessary to study their various ...
Zhijin Qiu   +9 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

Evaporation duct effects on sea clutter [PDF]

open access: greenIEEE Transactions on Antennas and Propagation, 1990
Existing sea clutter models are in general agreement on the trends and magnitudes of sea reflectivity at low (1 degrees -10 degrees ) grazing angles. However, at extremely low grazing angles ( >
R. A. Paulus
openaire   +3 more sources

A Multi-Dimensional Deep-Learning-Based Evaporation Duct Height Prediction Model Derived from MAGIC Data [PDF]

open access: goldRemote Sensing, 2022
The evaporation duct height (EDH) can reflect the main characteristics of the near-surface meteorological environment, which is essential for designing a communication system under this propagation mechanism. This study proposes an EDH prediction network
Cheng Yang, Jian Wang, Yafei Shi
doaj   +2 more sources

Investigating the Role of Wave Process in the Evaporation Duct Simulation by Using an Ocean–Atmosphere–Wave Coupled Model [PDF]

open access: goldAtmosphere
In this study, a diagnostic model for evaporation ducts was established based on the Coupled Ocean–Atmosphere–Wave–Sediment Transport (COAWST) and the Naval Postgraduate School (NPS) models.
Zhigang Shan   +9 more
doaj   +2 more sources

On the Possibility of Detecting Evaporation Ducts Through GNSS Reflectometry [PDF]

open access: goldRemote Sensing
An evaporation duct is a kind of atmospheric event with a refractive index exceeding the curvature of the Earth, which mostly exists on the ocean surface.
Fu Li   +8 more
doaj   +2 more sources

Characterizing Evaporation Ducts Within the Marine Atmospheric Boundary Layer Using Artificial Neural Networks [PDF]

open access: green, 2019
We apply a multilayer perceptron machine learning (ML) regression approach to infer electromagnetic (EM) duct heights within the marine atmospheric boundary layer (MABL) using sparsely sampled EM propagation data obtained within a bistatic context.
Earls, Christopher J., Sit, Hilarie
core   +2 more sources

A New Diagnostic Model and Improved Prediction Algorithm for the Heights of Evaporation Ducts [PDF]

open access: goldFrontiers in Earth Science, 2020
This paper develops a new method for the diagnosis and prediction of the evaporation duct heights on the sea, which has certain reference significance for the study of the evaporation ducts.
Yanbo Mai   +9 more
doaj   +2 more sources

Continuous observation of evaporation ducts in Super Typhoon Koinu (202314) using clustered wave gliders: mechanisms and maritime communication implications [PDF]

open access: goldFrontiers in Marine Science
Formed by humidity stratification in the marine atmospheric boundary layer, evaporation ducts serve as critical natural channels for maritime over-the-horizon (OTH) wireless communication.
Shuwen Wang   +19 more
doaj   +2 more sources

Validation of atmospheric evaporation duct in the eastern Indian Ocean [PDF]

open access: goldFrontiers in Earth Science
An atmospheric duct is an anomalous atmospheric structural phenomenon that causes trap refraction in the troposphere to change the propagation paths and ranges of electromagnetic waves, thereby increasing the detection distances of radar and other ...
Zhe Qi   +6 more
doaj   +2 more sources

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