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dc.contributor.authorTong, F.
dc.contributor.author童峰
dc.contributor.authorXu, X. M.
dc.contributor.author许肖梅
dc.contributor.authorFang, S. L.(Southeast Univ, Dept Radio Engn, Nanjing 210018, Peoples R China)
dc.date.accessioned2011-05-25T14:25:58Z
dc.date.available2011-05-25T14:25:58Z
dc.date.issued2008-08-15
dc.identifier.citationMATERIALS LETTERS,2008,62(21-22):3700-3703zh_CN
dc.identifier.issn0167-577X
dc.identifier.urihttp://dx.doi.org/doi:10.1016/j.matlet.2008.04.050
dc.identifier.urihttps://dspace.xmu.edu.cn/handle/2288/9165
dc.description.abstractThe performance of ultrasonic non-destructive estimation (NDE) is strongly dependent on the axial resolution of ultrasonic echoes. However, the highly band-pass signals commonly used in ultrasonic NDE systems pose significant limitations upon the time resolution enhancement due to seriously oscillatory cost function under classic estimation methods. In the present paper, a novel approach to improve the fidelity of sinusoidal NDE signals is presented which incorporating the pre-whitening of the non-linear least-squares (LS) cost function with the evolutionary optimization to facilitate the efficient search of global minimum. Simulation results are presented, demonstrating the feasibility of the proposed algorithm. (C) 2008 Elsevier B.V. All rights reserved.zh_CN
dc.language.isoenzh_CN
dc.publisherELSEVIER SCIENCE BVzh_CN
dc.subjectultrasonic NDEzh_CN
dc.subjectcharacterisation methodszh_CN
dc.subjectsensorszh_CN
dc.titleIdentification of highly oscillatory ultrasonic NDE echoes through evolutionary algorithmzh_CN
dc.typeArticlezh_CN


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