Results 1 to 10 of about 13,455 (197)

Evaporation Duct Height Nowcasting in China’s Yellow Sea Based on Deep Learning [PDF]

open access: goldRemote Sensing, 2021
The evaporation duct is a weather phenomenon that often occurs in marine environments and affects the operation of shipborne radar. The most important evaluation parameter is the evaporation duct height (EDH).
Jie Han   +7 more
doaj   +4 more sources

LGB-PHY: An Evaporation Duct Height Prediction Model Based on Physically Constrained LightGBM Algorithm [PDF]

open access: goldRemote Sensing, 2022
The evaporation duct is a special atmospheric stratification that significantly influences the propagation path of electromagnetic waves at sea, and hence, it is crucial for the stability of the radio communication systems.
Xingyu Chai   +4 more
doaj   +3 more sources

XGB Model : Research on Evaporation Duct Height Prediction Based on XGBoost Algorithm [PDF]

open access: goldRadioengineering, 2020
Evaporation duct is a specific atmospheric structure at sea, which has an important influence on the propagation path of electromagnetic waves (EW).
W. P. Zhao   +5 more
doaj   +4 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   +3 more sources

A New Short-Term Prediction Method for Estimation of the Evaporation Duct Height [PDF]

open access: goldIEEE Access, 2020
Evaporation duct is a kind of chaotic phenomenon over the ocean. In this paper, a new nonlinear prediction algorithm, the Darwinian evolutionary algorithm (DEA), is introduced to obtain the specific nonlinear formula P(·) of the chaotic phenomenon.
Yanbo Mai   +5 more
doaj   +3 more sources

Evaporation Duct Height Short-Term Prediction Based on Bayesian Hyperparameter Optimization [PDF]

open access: goldAtmosphere
Accurately predicting evaporation duct height (EDH) is a crucial technology for enabling over-the-horizon communication and radar detection at sea.
Ye-Wen Wu   +5 more
doaj   +3 more sources

ENSO-Modulated Spatio-Temporal Variability of Evaporation Duct Height in the South China Sea [PDF]

open access: goldJournal of Marine Science and Engineering
The evaporation duct, formed above the ocean surface by sharp vertical gradients of humidity, would significantly influence electromagnetic wave propagation.
Jingju Wang   +7 more
doaj   +3 more sources

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

open access: goldAtmosphere, 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   +2 more sources

An Evaporation Duct Height Estimation Algorithm Based on Deep Neural Networks

open access: diamondJournal of Physics: Conference Series, 2022
Abstract In order to solve the problem of the evaporation duct height (EDH) estimation, focusing on the propagation loss (PL) features with different EDHs, this paper proposes an evaporation duct height estimation method based on Deep Neural Networks (DNN). The theoretical basis is Universal Approximation Theorem.
Yilin Jiang, Xin Yao, Yuxin Zhang
openalex   +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

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