Method for measuring sea waves by means of ultrasonic waves, as well as sea wave measuring system
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United States of America Patent
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Mar 3, 2015
Grant Date -
Jun 14, 2012
app pub date -
Jul 30, 2010
filing date -
Aug 21, 2009
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Abstract
A method for measuring sea waves includes: transmitting ultrasonic waves from an ultrasonic transmitter 2 provided on a buoy 1 into the sea, and receiving the ultrasonic waves from three transponders 3 on the seabed together with the time signals; detecting distances between the transponders 3 and the ultrasonic transmitter 2 based on the propagation time of the ultrasonic waves; high-pass filtering the distance data to extract a short-term fluctuation component; preparing and solving linear equations to determine the displacement in the height direction of the short-term fluctuation component and obtain a wave height.
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