Wave spectra are estimated from wave frequency motions of a vessel at zero or low advance speed. Minimization of a cost functional that indicates how well the estimated spectrum results in the measured motion spectra was based on sequential quadratic programming and a genetic algorithm. Two procedures have been developed and applied to numerically simulated motions of a 59 m length offshore supply vessel.
Ocean Wave Spectral Estimation Using Vessel Wave Frequency Motions
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Pascoal, R., Guedes Soares, C., and Sørensen, A. J. (March 28, 2006). "Ocean Wave Spectral Estimation Using Vessel Wave Frequency Motions." ASME. J. Offshore Mech. Arct. Eng. May 2007; 129(2): 90–96. https://doi.org/10.1115/1.2426986
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