Results 31 to 40 of about 1,274 (202)

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

Frontiers 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, Jincai Li, Jun Zhao, Yifan Hu, Yifan Hu, Xiaofeng Zhao   +5 more
doaj   +1 more source

Application of Machine Learning in the Research of Evaporation Duct Height: A review

Journal of Physics: Conference Series, 2022
Abstract Evaporation duct is a kind of special atmospheric stratification that frequently appears on the sea surface, which has an important influence on the propagation and attenuation of electromagnetic waves, and is an important factor affecting the efficiency of marine radars and communication equipment. After the development in more
Xingyu Chai, Jincai Li, Jun Zhao, Xiaofeng Zhao   +3 more
openaire   +1 more source

Performance analysis of code division multiplexing communication under evaporation duct environment

Frontiers in Signal Processing, 2022
The evaporation duct is an effective means for realizing non-line-of-sight (NLOS) wireless transmission over the sea. However, the effects of marine weather conditions on electromagnetic propagation have rarely been studied.
Wenjing Liu, Xiqing Liu, Shi Yan, Linglan Zhao, Mugen Peng   +4 more
doaj   +1 more source

The influence of seasonal and nonreciprocal evaporation duct on electromagnetic wave propagation in the Gulf of Aden

Results in Physics, 2020
In this paper, the adaptability of ERA5 reanalysis data in the Gulf of Aden was validated by the data of shipborne sensors. Based on the reanalysis data, the seasonal distribution of nonreciprocal evaporation duct in the Gulf of Aden was obtained with PJ
Bin Tian, Qianqian Liu, Jun Lu, Xiaoguang He, Guodong Zeng, Liu Teng   +5 more
doaj   +1 more source

Regional Spatiotemporal Statistical Database of Evaporation Ducts Over the South China Sea For Future Long-Range Radio Application

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022
To fully grasp the characteristics and provide a basis for establishing an evaporation duct communication system for the South China Sea (SCS), we constructed a regional statistical database based on remote sensing meteorological parameters and a ...
Cheng Yang, Yafei Shi, Jian Wang, Feng Feng   +3 more
doaj   +1 more source

An Evaporation Duct Height Estimation Algorithm Based on Deep Neural Networks

Journal 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
openaire   +1 more source

Long-term over-the-horizon microwave channel measurements and statistical analysis in evaporation ducts over the Yellow Sea

Frontiers in Marine Science, 2023
Maritime high-speed over-the-horizon wireless communication is realizable through evaporation ducts. Detailed measurement, analysis, and modeling of duct channels are essential for application of this communication technique.
Shuwen Wang, Shuwen Wang, Shuwen Wang, Kunde Yang, Kunde Yang, Kunde Yang, Yang Shi, Yang Shi, Hao Zhang, Hao Zhang, Fan Yang, Fan Yang, Fan Yang, Dawei Hu, Dawei Hu, Dawei Hu, Guoyu Dong, Guoyu Dong, Guoyu Dong, Yihang Shu, Yihang Shu, Yihang Shu   +21 more
doaj   +1 more source

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

Frontiers 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, Zhijin Qiu, Cheng Zhang, Cheng Zhang, Bo Wang, Tong Hu, Jing Zou, Zhiqian Li, Shizhe Chen, Sheng Wu   +9 more
doaj   +1 more source

Exploring Relationships of Evaporation Duct Height with Wind Speed and Humidity

, 2023
Changes in humidity near the ocean surface can produce a phenomenon called evaporation ducts, which are nearly permanent features within the marine atmospheric surface layer (first ~100 m above the ocean surface).
Vaughan, Alexis
core  

Electric field intensity in cross-section of evaporation duct [PDF]

, 2019
This paper is devoted to the investigation of an evaporation duct in the context of its impact on microwave links communication stability. The work contains the numerical results for previously developed mathematical model based on using the dyadic Green'
Serebriakov, D. G., Abdullin, R. R.
core   +1 more source