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논문 기본 정보

자료유형
학술대회자료
저자정보
Tae-Geon Chung (Hoseo University) Tae-Geon Chung (Hoseo University) Kwang-Young Chae (Hoseo University) Kye-Won Kim (Hoseo University) Sung-Hyun Park (Hoseo University) Hak-Lim Ko (Hoseo University)
저널정보
한국정보통신학회 INTERNATIONAL CONFERENCE ON FUTURE INFORMATION & COMMUNICATION ENGINEERING 2023 INTERNATIONAL CONFERENCE ON FUTURE INFORMATION & COMMUNICATION ENGINEERING Vo.14 No.1
발행연도
2023.1
수록면
299 - 302 (4page)

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초록· 키워드

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Global Positioning System (GPS) signals are not available underwater since they are absorbed by water, therefore, the lack of GPS restricts navigation and tracking in underwater communication systems, Moreover, the reliance on time synchronization for data communication in underwater networks is costly and increases the complexity of systems. However, localization is vital to applications used for rescue in a sea or a river to search for missing people or missing bodies. Typically searching an underwater area is much wider than is land rescue, so that long-distance localization ability is also important, and this requires high transmission power level[1]. However, energy sources are also a challenge in the underwater environment as solar energy cannot be exploited since water absorbs much of the spectrum of sunlight. Therefore, this paper examines Linear Frequency Modulation (LFM) acoustic signals to determine if they are appropriate to be used for localization signals of underwater rescue systems. Different distances, bandwidths, and lengths of an LFM signal were examined with extremely low tx power and the correlation was checked at a receiver. The on-site experiments demonstrate that the tracking ability of LSM signals greatly affected by channel bandwidth, duration of the signals, and the environmental stability

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Abstract
Ⅰ. INTRODUCTION
Ⅱ. EXPERIMENT ENVIRONMENT AND SCEINARIOS
Ⅲ. Experiment results
Ⅳ. Conclusions
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