Conference paper
Evaluation of Shipboard Wave Estimation Techniques through Model-scale Experiments
Department of Mechanical Engineering, Technical University of Denmark1
Fluid Mechanics, Coastal and Maritime Engineering, Department of Mechanical Engineering, Technical University of Denmark2
Department of Electrical Engineering, Technical University of Denmark3
Automation and Control, Department of Electrical Engineering, Technical University of Denmark4
Norwegian University of Science and Technology5
The paper continues a study on the wave buoy analogy that uses shipboard measurements to estimate sea states. In the present study, the wave buoy analogy is formulated directly in the time domain and relies only partly on wave-vessel response amplitude operators (RAOs), which is in contrast to all previous works that either are formulated in the frequency domain and/or depend entirely on RAOs.
Specifically, the paper evaluates a novel concept for wave estimation based on combined techniques using a wave frequency estimator, not dependent on RAOs, to detect wave frequency and, respectively, nonlinear least squares fitting to estimate wave amplitude and phase. The concept has been previously tested with only numerical simulations but in this study the techniques are applied to model-scale experiments.
It is shown that the techniques successfully can be used to estimate the wave parameters of a regular wave train.
Language: | English |
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Publisher: | IEEE |
Year: | 2016 |
Pages: | 1-8 |
Proceedings: | OCEANS 2016 - Shanghai |
ISBN: | 1467397245 , 1467397253 , 9781467397247 and 9781467397254 |
Types: | Conference paper |
DOI: | 10.1109/OCEANSAP.2016.7485701 |
ORCIDs: | Nielsen, Ulrik Dam and Galeazzi, Roberto |
Estimation Frequency estimation Frequency-domain analysis Sea measurements Sea state Time-domain analysis frequency domain least squares approximations nonlinear least squares fitting numerical simulation ocean waves oceanographic techniques sea state estimation shipboard measurement shipboard wave estimation technique evaluation time domain wave buoy analogy wave frequency detection wave frequency estimator wave parameter wave-vessel response amplitude operator