| 非线性合成孔径聚焦超声成像 |
| |
| 引用本文： | 罗斌,王邓志,罗宏建,刘一舟.非线性合成孔径聚焦超声成像[J].应用声学,2003,22(5):5-8,30. |
| |
| 作者姓名： | 罗斌 王邓志 罗宏建 刘一舟 |
| |
| 作者单位： | 1. 武汉大学动机学院,武汉,430072
2. 九江学院材料工程系,九江,332005 |
| |
| 摘 要： | 论文介绍了合成孔径聚焦超声成像系统原理。建立了一个无损检测超声成像系统。同时，为了进一步提高分辨率，设计了基于相关系数的非线性合成孔径聚焦算法。然后利用此算法对试块成像，结果表明，与延时叠加合成孔径算法相比，基于相关性分析的非线性合成孔径算法提高了图像的分辨率，改善了图像质量。
|
| 关 键 词： | 非线性合成孔径聚焦超声成像 原理 无损检测超声成像系统 分辨率 图像 质量 SAFT |
Non-linear synthetic aperture focusing for ultrasonic imaging |
| |
| LUO Bin,WANG Dengzhi,LUO Hongjian and LIU Yizhou.Non-linear synthetic aperture focusing for ultrasonic imaging[J].Applied Acoustics,2003,22(5):5-8,30. |
| |
| Authors: | LUO Bin WANG Dengzhi LUO Hongjian and LIU Yizhou |
| |
| Institution: | M.E Dept of Wuhan University, Wuhan 430072;M.E. Dept of Jiujiang University, Jiujiang 332005;M.E Dept of Wuhan University, Wuhan 430072;M.E Dept of Wuhan University, Wuhan 430072 |
| |
| Abstract: | This paper mention briefly the principle of ultrasonic imaging system based on Synthetic Aperture Focusing Technology, and show an ultrasonic imaging system for NDT. At the same time, to improve the resolution, the authors design a non-linear SAFT algorithm based on the concept of correlation coefficient, uses the algorithm to reconstruct an ultrasonic imaging for a specimen, Results of the test indicate: compare to the time-delay SAFT principles, the SAFT principle based on the concept of correlation analysis improved the axial resolution and meliorated the imaging shaping effectively. |
| |
| Keywords: | Synthetic aperture focusing technology No destructive testing Ultrasonic imaging Correlation coefficient |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《应用声学》浏览原始摘要信息 |
| 点击此处可从《应用声学》下载免费的PDF全文 |
|
