Results 21 to 30 of about 4,721 (271)

The Inhomogeneous Characteristics of Evaporation Ducts in the Northern South China Sea Based on Information Entropy [PDF]

open access: yesEntropy
The inhomogeneity of the evaporation duct significantly influences electromagnetic propagation. Based on observation data from four buoy stations in the northern South China Sea (SCS) and European Centre for Medium-Range Weather Forecasts (ECMWF) data ...
Ning Yang   +3 more
doaj   +2 more sources

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

open access: yesResults 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   +5 more
exaly   +3 more sources

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

open access: yesRemote 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   +2 more sources

Spatial and temporal variability of the evaporation duct in the Gulf of Aden [PDF]

open access: yesTellus: Series A, Dynamic Meteorology and Oceanography, 2016
An evaporation duct climatology is constructed for the Gulf of Aden using a 31-year high-resolution data set from the climate reanalysis product National Centers for Environmental Prediction Climate Forecast System Reanalysis.
Qi Zhang, Kunde Yang, Yang Shi
doaj   +2 more sources

Research on Optimization Method of Evaporation Duct Prediction Model

open access: yesMathematics
The sea surface roughness parameterization and the universal stability function are key components of the evaporation duct prediction model based on the Monin–Obukhov similarity theory.
Yingxue Cui   +6 more
doaj   +2 more sources

Joint Inversion of Evaporation Duct Based on Radar Sea Clutter and Target Echo Using Deep Learning

open access: yesElectronics (Switzerland), 2022
Tropospheric duct is an anomalous atmospheric phenomenon over the sea surface that seriously affects the normal operation and performance evaluation of electromagnetic communication equipment at sea.
Hanjie Ji, Bo Yin, Jinpeng Zhang
exaly   +2 more sources

A Simulated and Experimental Analysis of Evaporation Duct Effects on Microwave Communications in the Irish Sea

open access: yesIEEE Transactions on Antennas and Propagation, 2022
This paper presents a simulated and experimental analysis of the effects of the evaporation duct on microwave propagation in the Irish Sea. The evaporation duct is a phenomenon that occurs almost permanently over all the world’s oceans and allows ...
Luke Robinson   +2 more
exaly   +2 more sources

Estimating Range-Dependent Evaporation Duct Height

open access: yesJournal of Atmospheric and Oceanic Technology, 2017
The refractivity from clutter (RFC) technique has been proved to be an effective way to estimate atmospheric duct structure. An important issue for RFC is how to make the estimate more robust, especially in range-dependent ducting conditions ...
Bruce M. Howe   +3 more
core   +2 more sources

An Experimental Study of the Effects of the Evaporation Duct on Microwave Propagation

open access: yesOCEANS 2019 MTS/IEEE SEATTLE, 2019
This paper presents the results of a study on the effects of the evaporation duct on microwave propagation in the Irish Sea. The evaporation duct is a phenomenon that occurs almost permanently over the earth’s oceans and can be exploited to enable over ...
Luke Robinson (12582262)   +7 more
core   +3 more sources

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

open access: yesRemote 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   +2 more sources

Home - About - Disclaimer - Privacy