海浪方向谱估计方法的比较
Comparisons on estimating method of directional spectrum
-
摘要: 分别利用数值模拟和实测资料对目前被认为分辨力较高的最大似然法(MLM)、扩展本征矢方法(EEV)、扩展最大滴方法(EMEP)以及贝叶斯方法(BDM)等四种海浪方向谱估计方法的可靠性进行了分析,从不同频率、不同噪声水平和不同方向集中度三个角度检验其再现性、稳定性和实用性,结果表明MLM、EEV和BDM大致给出相同的方向分布,其中BDM的再现性最好,但实用性逊于MLM和EEV,EMEP由于稳定性差,不适用于实测资料的分析.Abstract: Based on numerical simulation and observation data, the four estimating methods of directional spectrum, maximum-likelihood method(MLM), extended eigenvector method(EEV), extended maximum-entropy principle(EMEP) and Bayesian directional method(BDM) are studied about their reliabilities respectively. It is shown that MLM, EEV and BDM basically give the same directional distribution in general. However, BDM holds the best reproducibility in any cases, and is inferior to MLM and EEV in practicality. EMEP is not suitable to real observation data because of its poor stability.
-
Barber N F.The directional resolving power of an array of wave detectors.Ocean Wave Spectra,Prentice Hall,Englewood Cliffs,N.J.,USA,1963, 137-150 Isobe M,Konda K,Horikawa K.Extension of MLM for estimating directional wave spectrum.In:Symposium on Description and Modelling of Directional Seas.DHI and MMI,Copenhagen, 1984, 1-15 管长龙,文圣常,张大错.分析海浪方向谱的扩展本征矢方法—Ⅰ.方法的导出.海洋与湖沼,1995,26(1):58-62 管长龙,文圣常,张大错.分析海浪方向谱的扩展本征矢方法—Ⅱ.方法的验证、比较和应用.海洋与湖沼,1995,26(3):241一246 桥本典明,永井纪彦,浅井正等.海洋波の方向スペクトルの推定における最大エントロピ—原理法(MEP).扩张.港湾技术研究所报告,1993,32(1),3-25 Hashimoto H,Kobune K,Kameyama Y.Estimation of directional spectrum using the Bayesian approach and its application to field data analysis.Report of the Port and Harbour Research Institute,1987,(26):57-100 柳淑学,俞幸修.方向谱估计方法.港口工程,1994(1):25-32 Capon J, Greenfield R J, Kolker R J.Multidimensional maximum-likelihood processing of a large aperture seismic array.Proceedings IEEE,1967,55,192-211 Msrsden R F,Juszko B A.An eigenvector method for the calculation of directional spectra from heave,pitch and roll buoy data.J.Phys.Oceanogr.,1987,16,2052-2060 Zhao Dongliang, Masuda Akira, Wen Shengchang.A laboratory study of directional spectra with maximum-likelihood method-1.Developing wind wave.Acta Oceanologica Sinica, 1999,18(1),59-74
点击查看大图
计量
- 文章访问数: 925
- HTML全文浏览量: 16
- PDF下载量: 953
- 被引次数: 0