Journal article
The wave buoy analogy - estimating high-frequency wave excitations
The paper deals with the wave buoy analogy where a ship is considered as a wave buoy, so that measured ship responses are used as a basis to estimate wave spectra and associated sea state parameters. The study presented follows up on a previous paper, Nielsen [Nielsen UD. Response-based estimation of sea state parameters — influence of filtering.
Ocean Engineering 2007;34:1797–810.], where time series of ship responses were generated from a known wave spectrum for the purpose of the inverse process — the estimation of the underlying wave excitations. Similar response generations and vice versa processes are carried out in the present paper; however with one of the responses being the relative motion which is a type of response that is sensitive to high-frequency excitations.
Based on the present study it is shown that by including the relative motion, the frequency-wise energy distribution can be estimated reasonably well, even considering high-frequency wave components of a wind sea wave spectrum.
Language: | English |
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Year: | 2008 |
Pages: | 100-106 |
ISSN: | 18791549 and 01411187 |
Types: | Journal article |
DOI: | 10.1016/j.apor.2008.07.002 |
ORCIDs: | Nielsen, Ulrik Dam |