摘要
近场声全息(NAH:Near-field Acoustic Holography)技术采用近场测量,可以有效地记录垂直于源表面并随距离增加而迅速衰减的倏逝波,这一特点使得NAH技术可获得不受波长限制的重建分辨率。论文中对水下结构辐射声场进行数值仿真及试验研究,在获得声场重构结果的基础上分析测量条件对分析结果的影响,论证声全息技术应用于水下结构辐射噪声测试的可行性及应用场景。
The near-field acoustic holography technology uses near field measurements,recorded evanescent wave that perpendicular to the source surface effectively and rapidly, this feature makes the reconstruction of the NAH technology independent of the wavelength resolu tion limit. In this paper, the acoustic radiation of underwater structures numerical simulation and experimental study has been putted forward, Based on the sound field reconstruction results, the affect of the measurement conditions has been discussed,demonstrated the feasibility and application scenarios of acoustic holography that applied to underwater structure radiated noise test.
出处
《舰船电子工程》
2013年第9期88-90,共3页
Ship Electronic Engineering
关键词
声全息技术
近场测量
噪声测试
数值仿真及试验
Acoustic Holography, near-field measurements, noise test, numerical simulation and experimental study
