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Underwater E-plane Attenuation Model of Omnidirectional Antenna Using Half Power Beam Width (HPBW)
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 Title & Authors
Underwater E-plane Attenuation Model of Omnidirectional Antenna Using Half Power Beam Width (HPBW)
Kwak, Kyungmin; Park, Daegil; Kim, Younghyeon; Chung, Wan Kyun; Kim, Jinhyun;
In this paper, we use the characteristics of electromagnetic waves underwater attenuation for estimating linear distance between a transmitting node and receiving node, and research underwater vertical plane attenuation model for constructing the underwater localization system. The underwater localization of 2 dimensional with the plane attenuation model in the horizontal plane (H-plane) was proposed previous research. But for the 3 dimensional underwater localization, the additional vertical plane (E-plane) model should be considered. Because the horizontal plane of omnidirectional antenna has the same attenuation tendency in x-y plane according to the distance, whereas in vertical plane shows an irregular pattern in x-z plane. For that reason, in the vertical plane environment, the attenuation should be changed by the position and inclination. Hence, in this paper the distance and angle between transmitting and receiving node are defined using spherical coordinate system and derive an antenna gain pattern using half power beam width (HPBW). The HPBW is called a term which defines antenna's performance between isotropic and other antennas. This paper derives omnidirectional antenna's maximum gain and attenuation pattern model and define vertical plane's gain pattern model using HPBW. Finally, experimental verifications for the proposed underwater vertical plane's attenuation model was executed.
HPBW;underwater localization;RF localization;antenna pattern;omni-directional antenna;RSS;directivity;
 Cited by
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