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1 2011

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Onboard Wave Sensing with Velocity Information GPS

Aray Y., Pedersen E., Kouguchi N., Yamada K.

TransNav : International Journal on Marine Navigation and Safety of Sea Transportation

2011

Vol. 5, no. 2

205--211

Even though it is essential that the wave information promotes greater safety also efficiency to navigate and/or operate a ship not only ocean going but also docking/landing, it is very difficult to sense a wave information such as wave heights and periods or wave lengths in real time at the present time. On the other hand, the Velocity Information (VI) GPS is developed as the stand-alone 3D velocities measurement equipment of which accuracies are precise (less than 1 cm/s) and the coverage is all over the world. It is able to drive the wave information from the time history of not only wave amplitudes but also wave velocities. The algorithm to sense the wave information such as not only significant wave height but also plural wave heights and period intervals of encounter was presented by the authors in IAIN2009 and ANC2010. In this paper, the introduction and the performance of wave sensing with VI-GPS and some results of onboard experiments are described and discussed.