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Prediction of Atmospheric Duct Conditions from a Clutter Power Spectrum Using Deep Learning
Remote SensingThis paper presents a method for predicting atmospheric duct conditions from a clutter power spectrum using deep learning. To accurately predict the duct conditions, deep learning with a binary classification is applied to the proposed refractivity from ...
Taekyeong Jin +3 more
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Journal of Marine Science and Engineering, 2023 Atmospheric ducts are special super-refractive atmospheric structures that can cause over-the-horizon propagation of electromagnetic waves. Different types of atmospheric ducts have different influences on electromagnetic wave propagation.
Yang Shi +3 more
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The detectable double atmospheric ducts for RFC [PDF]
2014 IEEE Antennas and Propagation Society International Symposium (APSURSI), 2014 Refractivity from clutter (RFC) systems are defined for retrieving the atmospheric ducts from the sea clutter echo of a radar in open sea or coastal environment. However, some ducts hardly have an effect on the clutter echo. Consequently, the RFC technique suffers inherent limitations and is unable to provide information about these ducts.
Douvenot, Rémi +2 more
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Atmosphere, 2020 Intraseasonal oscillation of the evaporation duct, lasting 30–60 days, has been identified over the South China Sea (SCS) summer monsoon region based on multiple reanalyses and observational data.
Wentao Jia +3 more
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IEEE AccessLow-altitude atmospheric ducts are anomalous atmospheric phenomena in the troposphere, significantly affecting the operation of microwave or ultrashort-wave radio systems.
Mian Wu +3 more
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Machine Learning and Deep Learning-Based Atmospheric Duct Interference Detection and Mitigation in TD-LTE Networks [PDF]
Future InternetThe variations in the atmospheric refractivity in the lower atmosphere create a natural phenomenon known as atmospheric ducts. The atmospheric ducts allow radio signals to travel long distances.
Rasendram Muralitharan +3 more
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Low-Level Atmospheric Ducts [PDF]
Nature, 1948 DURING 1943-46, the Signals Research and Development Establishment operated a series of experimental centimetre-wave radio links along a 60-mile oversea path across Cardigan Bay. One major purpose of the investigation, which was carried out for an inter-Service committee under the chairmanship of Sir Edward Appleton, was to determine the degree to ...
J. S. MCPETRIE, B. STARNECKI
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Deep learning for classifying and characterizing atmospheric ducting within the maritime setting [PDF]
Computers & Geosciences, 2021 Real-time characterization of refractivity within the marine atmospheric boundary layer can provide valuable information that can potentially be used to mitigate the effects of atmospheric ducting on radar performance. Many duct characterization models are successful at predicting parameters from a specific refractivity profile associated with a given ...
Hilarie Sit, Christopher J. Earls
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Low-Level Atmospheric Ducts [PDF]
Nature, 1949 IN a communication in Nature1, I suggested an explanation for the occurrence of low-level atmospheric ducts over the sea, which had been reported by McPetrie and Starkey2 in conditions of strong winds. It was suggested that the previous history of the air was the governing factor in deciding whether an atmospheric duct would occur. I am indebted to Dr.
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Ducting Approach to Atmospheric Sound Propagation [PDF]
The Journal of the Acoustical Society of America, 1969 The velocity profile V=V0/1+Az+Bz2)12 is investigated for nonfocus situations. When A is negative, sound rays are refracted back to the ground and are reflected. When A is positive, sound rays are refracted away from the ground and a shadow zone is formed.
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