|本期目录/Table of Contents|

 多阵元合成孔径聚焦超声成像研究(PDF)

《纳米技术与精密工程》[ISSN:1672-6030/CN:12-1351/O3]

期数:
2014年3期
页码:
162-166
栏目:
精密测量
出版日期:
2014-05-15

文章信息/Info

Title:
 Multi-Element Synthetic Aperture Focusing
Ultrasonic Imaging
作者:
 杜英华 祁欣
 (北京化工大学物理与电子科学系,北京100029)
Author(s):
 Du Yinghua Qi Xin
 ( Department of Physics and Electronics, Beijing University of Chemical Technology, Beijing 100029, China)
关键词:
 多阵元 合成孔径 超声成像
Keywords:
 multi-element synthetic aperture ultrasonic imaging
分类号:
TB553
DOI:
10.13494/j.npe.20130109
文献标识码:
A
摘要:
对多阵元合成孔径聚焦超声成像进行了全面的研究.根据声场的辐射理论推导了多阵元孔径的声压分布,并分别对单阵元、多阵元聚焦和多阵元非聚焦的声场和缺陷响应进行了仿真,发现多阵元非聚焦的声场更适合于合成孔径聚焦超声成像,并根据这个原则进行了成像实验,结果表明在远场情况下,多阵元合成孔径聚焦超声成像可以获得比单阵元合成孔径聚焦成像更高的成像质量和分辨力.
Abstract:
 The principle of multi-element synthetic aperture focusing imaging was studied. Acoustic field characteristics of multielement aperture are derived employing the acoustics radiation theory. And simulation of one-element, multi-element focusing and multi-element un-focusing acoustic field and defect was respectively carried out. It is shown that better results can be achieved in synthetic aperture imaging in multi-element un-focusing acoustic field. Experiments were implemented based on this conclusion. The results show that better resolution and image quality can be achieved through multi-element imaging than single element in the far field.

参考文献/References

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备注/Memo

备注/Memo:
收稿日期: 2014-03-14.
作者简介: 杜英华(1974— ), 女, 博士,讲师.
通讯作者: 祁欣, 教授, qixin@mail.buct.edu.cn.
更新日期/Last Update: 2014-08-14