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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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Remote Sensing, 2022 The atmospheric duct (AD) is an anomalous structure in which electromagnetic waves can make transhorizon propagation. ADs often occur in the formation, development and disappearance of tropical cyclones (TCs). In this work, the eXtreme Gradient Boosting (
Lang Huang +3 more
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Frontiers in Environmental Science, 2022 Atmospheric duct is an anomalous atmospheric structure that affects electromagnetic wave propagation. The important characteristics of the atmospheric ducts include duct probability, duct height, duct strength, and the thickness of the trapping layer. To
Lang Huang, Xiaofeng Zhao, Yudi Liu
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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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Quantitative Prediction of Sea Clutter Power Based on Improved Grey Markov Model
Atmosphere, 2022 The detection and prediction of sea clutter power is the basis of inversing atmospheric duct. At present, the technology of atmospheric duct within radar detection range is relatively perfect, but the long-distance inversion of atmospheric duct is ...
Zihao Chen +3 more
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A Sliced Parabolic Equation Method to Characterize Maritime Radio Propagation
Sensors, 2023 For maritime broadband communications, atmospheric ducts can enable beyond line-of-sight communications or cause severe interference. Due to the strong spatial–temporal variability of atmospheric conditions in near-shore areas, atmospheric ducts have ...
Yuzhen Wang +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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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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Dianxin kexue, 2022 Atmospheric duct interference is a seriousinternal interference of large-scale TDD wireless communication system according to specific meteorological conditions.The causes and classification of the atmospheric duct interference were analyzed firstly.Then
Xiaoyun WANG +4 more
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