Sea state estimation using vessel response in dynamic positioning
Journal article, Peer reviewed
Accepted version
Permanent lenke
http://hdl.handle.net/11250/2577406Utgivelsesdato
2018Metadata
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- Institutt for marin teknikk [3472]
- Publikasjoner fra CRIStin - NTNU [38688]
Sammendrag
This paper presents a novel method for estimating the sea state parameters based on the heave, roll and pitch response of a vessel conducting station keeping automatically by a dynamic positioning (DP) system, i.e., without forward speed. The proposed algorithm finds the wave spectrum estimate from the response measurements by iteratively solving a set of linear equations, and it is computationally efficient. The main vessel parameters are required as input. Apart from this the method is signal-based, with no assumptions on the wave spectrum shape. Performance of the proposed algorithm is demonstrated on full-scale experimental DP data of a vessel in three different sea states at head, bow quartering, beam, stern quartering and following sea waves, respectively.