Parametric estimation in the wave buoy analogy - an elaborated approach based on energy considerations
An accurate estimation of the ocean wave directional spectrum at the location of an advancing ship is very useful for the ship master to improve operation and safety in a seaway. Research has been conducted to obtain sea state estimates by the Wave Buoy Analogy. The method deals with processing the...
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Language: | English |
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American Society of Mechanical Engineers
2014
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Online Access: | https://orbit.dtu.dk/en/publications/83058cb4-667f-496a-8fac-ff3ac25c7c14 https://doi.org/10.1115/omae2014-24646 |
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ftdtupubl:oai:pure.atira.dk:publications/83058cb4-667f-496a-8fac-ff3ac25c7c14 2023-06-18T03:38:24+02:00 Parametric estimation in the wave buoy analogy - an elaborated approach based on energy considerations Montazeri, Najmeh Nielsen, Ulrik Dam 2014 https://orbit.dtu.dk/en/publications/83058cb4-667f-496a-8fac-ff3ac25c7c14 https://doi.org/10.1115/omae2014-24646 eng eng American Society of Mechanical Engineers info:eu-repo/semantics/closedAccess Montazeri , N & Nielsen , U D 2014 , Parametric estimation in the wave buoy analogy - an elaborated approach based on energy considerations . in Proceedings of the ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering (OMAE 2014) . , OMAE2014-24646 , American Society of Mechanical Engineers , 33rd International Conference on Ocean, Offshore and Arctic Engineering , San Francisco, CA , United States , 08/06/2014 . https://doi.org/10.1115/omae2014-24646 contributionToPeriodical 2014 ftdtupubl https://doi.org/10.1115/omae2014-24646 2023-06-07T22:57:46Z An accurate estimation of the ocean wave directional spectrum at the location of an advancing ship is very useful for the ship master to improve operation and safety in a seaway. Research has been conducted to obtain sea state estimates by the Wave Buoy Analogy. The method deals with processing the ship’s wave-induced responses based on different statistical inferences including parametric and non-parametric approaches. This paper considers a concept to improve the estimate obtained by the parametric method for sea state estimation. The idea is illustrated by an analysis made on full-scale response measurements carried out on a 9400 TEU container ship. The process of fitting a standard JONSWAP spectrum takes into account an analysis of residuals formed by the difference between measured and estimated amount of energy of the response(s). A couple of motion responses and also bending moment are considered as the input of the estimation process. A comparison is made between the results and also with some in-hand outputs from other estimation sources, e.g., wave radar measurements and sea surface elevation by microwave sensors. The discussed and analyzed procedure could also lead to an automatic selection of response combinations for sea state estimation. Article in Journal/Newspaper Arctic Technical University of Denmark: DTU Orbit Volume 8B: Ocean Engineering |
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Open Polar |
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Technical University of Denmark: DTU Orbit |
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ftdtupubl |
language |
English |
description |
An accurate estimation of the ocean wave directional spectrum at the location of an advancing ship is very useful for the ship master to improve operation and safety in a seaway. Research has been conducted to obtain sea state estimates by the Wave Buoy Analogy. The method deals with processing the ship’s wave-induced responses based on different statistical inferences including parametric and non-parametric approaches. This paper considers a concept to improve the estimate obtained by the parametric method for sea state estimation. The idea is illustrated by an analysis made on full-scale response measurements carried out on a 9400 TEU container ship. The process of fitting a standard JONSWAP spectrum takes into account an analysis of residuals formed by the difference between measured and estimated amount of energy of the response(s). A couple of motion responses and also bending moment are considered as the input of the estimation process. A comparison is made between the results and also with some in-hand outputs from other estimation sources, e.g., wave radar measurements and sea surface elevation by microwave sensors. The discussed and analyzed procedure could also lead to an automatic selection of response combinations for sea state estimation. |
format |
Article in Journal/Newspaper |
author |
Montazeri, Najmeh Nielsen, Ulrik Dam |
spellingShingle |
Montazeri, Najmeh Nielsen, Ulrik Dam Parametric estimation in the wave buoy analogy - an elaborated approach based on energy considerations |
author_facet |
Montazeri, Najmeh Nielsen, Ulrik Dam |
author_sort |
Montazeri, Najmeh |
title |
Parametric estimation in the wave buoy analogy - an elaborated approach based on energy considerations |
title_short |
Parametric estimation in the wave buoy analogy - an elaborated approach based on energy considerations |
title_full |
Parametric estimation in the wave buoy analogy - an elaborated approach based on energy considerations |
title_fullStr |
Parametric estimation in the wave buoy analogy - an elaborated approach based on energy considerations |
title_full_unstemmed |
Parametric estimation in the wave buoy analogy - an elaborated approach based on energy considerations |
title_sort |
parametric estimation in the wave buoy analogy - an elaborated approach based on energy considerations |
publisher |
American Society of Mechanical Engineers |
publishDate |
2014 |
url |
https://orbit.dtu.dk/en/publications/83058cb4-667f-496a-8fac-ff3ac25c7c14 https://doi.org/10.1115/omae2014-24646 |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Montazeri , N & Nielsen , U D 2014 , Parametric estimation in the wave buoy analogy - an elaborated approach based on energy considerations . in Proceedings of the ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering (OMAE 2014) . , OMAE2014-24646 , American Society of Mechanical Engineers , 33rd International Conference on Ocean, Offshore and Arctic Engineering , San Francisco, CA , United States , 08/06/2014 . https://doi.org/10.1115/omae2014-24646 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1115/omae2014-24646 |
container_title |
Volume 8B: Ocean Engineering |
_version_ |
1769003418999848960 |