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http://dx.doi.org/10.5302/J.ICROS.2013.19.2.107

Development of 3-Dimensional Sensor Nodes using Electro-magnetic Waves for Underwater Localization  

Kwak, Kyung Min (Seoul National University of Science and Technology)
Kim, Jinhyun (Seoul National University of Science and Technology)
Publication Information
Journal of Institute of Control, Robotics and Systems / v.19, no.2, 2013 , pp. 107-112 More about this Journal
Abstract
In this paper, we discuss a 3-dimensional localization sensor node using EM waves (Electromagnetic waves) with RSSI (Received Signal Strength Indicator). Generally EM waves cannot be used in underwater environment, because the signal is highly attenuated by the water medium according to the distance. Although the signal quickly reduces in underwater, the reducing tendency is very clear and uniform. Hence EM waves have possibility as underwater distance sensors. The authors have verified the possibility by theory and several experiments, and developed calibration methods in case of linear and planer environment. For 3-dimensional localization in underwater, it must be known antenna's radiation pattern property in electric plane(called E-plane). In this paper, we proceed experiments to verify attenuation tendency with z axis movement, PLF (Polarization Loss Factor) and ILF (Inclination Loss Factor) with its theoretical approach.
Keywords
underwater localization; RF; RSSI; antenna; electro-magnetic waves;
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Times Cited By KSCI : 3  (Citation Analysis)
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