Experimental Investigations of Electromagnetic Wave Propagation in Seawater

It is often preferable to avoid using divers to undertake sub-sea activities, the alternatives being autonomous or remotely operated robotic vehicles and manipulators. This will only be achievable if robust communications can be established through seawater. Presently for such sub-sea activities it...

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Bibliographic Details
Main Authors: Shaw, A., Al-Shamma'a, A.I., Wylie, S.R., Toal, D.
Format: Conference Proceeding
Language:English
Subjects:
Electromagnetic propagation
Frequency
Manipulators
Mobile robots
Modems
Optical sensors
Remotely operated vehicles
Robot sensing systems
Robustness
Underwater acoustic communication
Underwater acoustics
Underwater antennas
Underwater optical communication
Underwater radio propagation
Underwater vehicle communication
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Summary:It is often preferable to avoid using divers to undertake sub-sea activities, the alternatives being autonomous or remotely operated robotic vehicles and manipulators. This will only be achievable if robust communications can be established through seawater. Presently for such sub-sea activities it is necessary to use acoustic modems, which are only capable of operating with data rates of up to 50kbs -1 . Optical sensors can also be used but these rely on clear water and in many sea conditions propagation beyond 10m is not possible. This paper presents new experimental results for electromagnetic wave propagation through seawater at MHz frequencies. These frequencies would enable the use of high speed data rates, suitable for a wide range of sub-sea activities
DOI:10.1109/EUMC.2006.281456