摘要
简单地回顾了全息术的基本原理,全息术的应用范围及发展历史。对声全息技术进行了分类,并对各类声全息技术的特点进行了评述,就近场声全息技术(NAH)中常用的各类重建计算方法及适用范围、声全息数据的各类采集方法、特点及声全息成像的分辨率、各类声场全息图像的表达方法等问题的研究现状进行了详尽的分析,并重点分析了基于声压测量的近场声全息技术和基于声强测量的近场声全息技术(BAHIM)的研究现状,从而指出了这两种近场声全息技术有待进一步深入研究的问题,并对NAH及BAHIM技术发展前景进行了展望。
The basic theory and development of acoustical holography are reviewed in this paper. Acoustical holographic techniques are classified, and their features are discussed. A number of aspects including widely used calculation methods of near-field holography (NAH) and the scope of their applications, data acquisition methods, resolution of holographic images, and representative methods of acoustical holography are analyzed. The paper emphasizes the present status of NAH based both on sound pressure measurement and sound intensity measurement. Finally, existing problems requiring further studies of these two types of NAH are pointed out, and a preview of the future development is provided.
出处
《声学技术》
CSCD
2003年第2期120-125,129,共7页
Technical Acoustics
基金
安徽省自然科学基金(00047418)
安徽省十五科技攻关课题(01012002)
