Analysis and Research on Chaotic Dynamics of Evaporation Duct Height Time Series with Multiple Time Scales [PDF]
Atmosphere, 2022 The evaporation duct is a particular type of atmospheric structure that always appears on the open ocean. Predicting the evaporation duct height (EDH) accurately and in a timely manner is of great significance for the practical application of marine ...
Qi Zhang, Xi Chen, Fuyu Yin, Fei Hong
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A Novel System for the Measurement of an Evaporation Duct Using the Magnetic Coupling Principle for Power Feeding and Data Transmission [PDF]
Sensors, 2022 Since the evaporation duct height (EDH) only covers the antenna height of most shipborne microwave radars, mastering the EDH in advance has great significance in achieving long-range target detection.
Qiang Wang +6 more
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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 +3 more
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EVAPORATION DUCT RETRIEVAL USING CHANGES IN RADAR SEA CLUTTER POWER VERSUS RECEIVING HEIGHT [PDF]
Progress In Electromagnetics Research, 2012 A method for retrieving evaporation duct height (EDH) is introduced in this paper. The proposed technique employs the changes in radar sea clutter power observed at difierent heights as input information. It identifles the EDH associated with the modeled clutter change pattern that best matches measured change patterns. The performance of the method is
Jinpeng Zhang +3 more
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Research on Evaporation Duct Height Prediction Modeling in the Yellow and Bohai Seas Using BLA-EDH [PDF]
AtmosphereEvaporation Duct Height (EDH) is a crucial parameter in evaporation duct modeling, as it directly influences the strength of the waveguide trapping effect and significantly impacts the over-the-horizon detection performance of maritime radars. To address
Xiaoyu Wu +4 more
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Estimating Range-Dependent Evaporation Duct Height
Journal of Atmospheric and Oceanic Technology, 2017 AbstractThe 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. Traditionally, statistical inversion methods need a large number of forward propagation model runs to ...
Xiaofeng Zhao +3 more
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EDH-STNet: An Evaporation Duct Height Spatiotemporal Prediction Model Based on Swin-Unet Integrating Multiple Environmental Information Sources [PDF]
Remote SensingGiven the significant spatial non-uniformity of marine evaporation ducts, accurately predicting the regional distribution of evaporation duct height (EDH) is crucial for ensuring the stable operation of radio systems.
Hanjie Ji +5 more
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A Comparison of the Machine Learning Algorithm for Evaporation Duct Estimation [PDF]
Radioengineering, 2013 In this research, a comparison of the relevance vector machine (RVM), least square support vector machine (LSSVM) and the radial basis function neural network (RBFNN) for evaporation duct estimation are presented.
C. Yang
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Variability of Silver Fir Needle (Abies alba Mill.) Anatomical Features in the Southeast Europe Natural Populations [PDF]
PlantsThe survival of marginal/peripheral silver fir (Abies alba Mill.) populations in the broader region of Southeast Europe is endangered due to climate change and population decline. This study aimed to determine the level and pattern of variability for the
Vladan Popović +6 more
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A New Diagnostic Model and Improved Prediction Algorithm for the Heights of Evaporation Ducts
Frontiers in Earth Science, 2020 This paper develops a new method for the diagnosis and prediction of the evaporation duct heights on the sea, which has certain reference significance for the study of the evaporation ducts.
Yanbo Mai +9 more
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