2010 Fiscal Year Final Research Report
Study on Spectral Analysis of Non-linear and Non-stationary Ship Motion Data
| Project/Area Number |
20560744
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Naval and maritime engineering
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| Research Institution | Tokyo University of Marine Science and Technology |
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Principal Investigator |
ISEKI Toshio Tokyo University of Marine Science and Technology, 海洋工学部, 教授 (70212959)
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| Research Collaborator |
ULRIK Dam Nielsen デンマーク工科大学, 機械工学科, 准教授
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| Project Period (FY) |
2008 – 2010
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| Keywords | 高次スペクトル解析 / 非線形・非定常船体運動 |
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| Research Abstract |
In this study, the real-time algorithm of higher order spectral analysis is proposed in order to investigate the non-linear and non-stationary ship motions. The algorithm is based on the time-varying vector auto-regressive modeling and can be considered as an extension of the instantaneous power spectral analysis. The analyzed results of the full scale ship motion data were presented at the domestic and international conferences and were highly regarded. Therefore, it can be recognized that the objectives of this study have been achieved.
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