中国舰船研究2011，Vol.6Issue(4)：19-24,6.DOI:10.3969/j.issn.1673-3185.2011.04.004
基于相位共轭方法识别结构表面法向振速
Identification of the Surface Normal Velocity of a Structure Based on Phase Conjugation Method
摘要
Abstract
The identification of the underwater radiated sound field of a plate and cylindrical shell were studied numerically by using the phase conjugation method. The normal velocity distribution of the structure was reconstructed by two different methods after obtaining the surface pressure distribution. One method was based on the pressure gradient and only required the dimension and the location of the structure in the sound field, the other was based on the surface impendence relationship of the structure vibration and the surface pressure distribution. The results show that the pressure gradient method can get the approximate distribution of the surface normal velocity and is simple to implement even if the surface impendence relationship is unknown. The method based on the surface impendence relationship achieves more accurate identification results of the surface normal velocity.关键词
相位共轭/法向振速/辐射声场识别/声压梯度/阻抗Key words
phase conjugation/normal velocity/identification/pressure gradient/impendence分类
通用工业技术引用本文复制引用
刘松,黎胜,赵德有..基于相位共轭方法识别结构表面法向振速[J].中国舰船研究,2011,6(4):19-24,6.基金项目
国家自然科学基金(10972046) （10972046）
