| ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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Influence of obstacle on electromagnetic wave propagation in evaporation duct with experiment verification |
| Shi Yang (史阳), Yang Kun-De (杨坤德), Yang Yi-Xin (杨益新), Ma Yuan-Liang (马远良) |
| School of Marine Science and Technology, Northwestern Polytechnical University, Xi'an 710072, China |
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Abstract In this paper, the influence of obstacle on electromagnetic wave propagation in an evaporation duct is investigated, both from numerical simulation and experimental observation. A comparison of electromagnetic wave propagation in evaporation duct with and without obstacle for a typical case is presented. The presence of obstacle causes a significant increase in path loss. The obstacle has significant impact on electromagnetic wave propagation when the frequency is higher than 5 GHz and when the evaporation duct height is higher than 10 m. The influence of an island on electromagnetic wave propagation was observed in the experiment held in the South China Sea, October 2012. The experiment result shows that the island causes about 30–40 dB increase in path loss. The discrepancy between model and measurement is analyzed and the errors of transmitting antenna height and relative humidity are the possible causes of the discrepancy.
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Received: 10 September 2014
Revised: 14 November 2014
Accepted manuscript online:
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PACS:
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41.20.Jb
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(Electromagnetic wave propagation; radiowave propagation)
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94.20.ws
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(Electromagnetic wave propagation)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant No. 11174235) and the Fundamental Research Funds for the Central Universities of China (Grant No. 3102014JC02010301). |
Corresponding Authors:
Yang Kun-De
E-mail: ykdzym@nwpu.edu.cn
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| About author: 41.20.Jb; 94.20.ws |
Cite this article:
Shi Yang (史阳), Yang Kun-De (杨坤德), Yang Yi-Xin (杨益新), Ma Yuan-Liang (马远良) Influence of obstacle on electromagnetic wave propagation in evaporation duct with experiment verification 2015 Chin. Phys. B 24 054101
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