期刊文献+

一种改进的合成孔径聚焦算法研究 预览 被引量:4

Study on an Improved SAFT Algorithm
在线阅读 免费下载
收藏 分享 导出
摘要 在超声混凝土检测时,合成孔径聚焦技术(SAFT)是一种有效的方法。为了进一步提高混凝土材料深度探测分辨力,该文提出了一种改进的合成孔径成像算法。此法将SAFT原理与波包原子分解算法相结合,能更有效聚焦,提高混凝土探测成像的分辨力,并可减少成像算法的运算量。利用仿真实验对这种改进的合成孔径算法进行了验证。结果表明,和传统SAFT算法比较,此法的成像目标定位能力增强,能获得更好的成像效果。 In ultrasonic test for concrete structure, the synthetic aperture focusing technique (SAFT) is an effective method. In this contribution, an improved SAFT algorithm has been presented for improving the resolution of detection for the concrete materials. Better focusing effect can be obtained and the imaging resolution can be enhanced by combining SAFT with a new atomic decomposition of wavepacket algorithm. Furthermore, the operation time of the imaging algorithm can be saved by using this method. The improved algorithm has been verified by the simulation experiment. Comparing with the traditional SAFT, the improved SAFT method can increase the ability of localizing object greatly and give better imaging effect.
作者 李秋锋 石立华 金信鸿 梁大开 LI Qiu-feng , SHI Li-hua , JIN Xin-hong , LIANG Da-kai (1. Key Lab. of Nondestructive Testing, Ministry of Education, Nanchang Hangkong University, Nanchang 330063,China; 2. Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China; 3. Engineering Institute of Corps of Engineers PLA University of Science and Technology, Nanjing 210007, China )
出处 《压电与声光》 CSCD 北大核心 2009年第3期 440-443,共4页 PIEZOELECTRICS ACORSTOOPTICS
基金 国家自然科学基金资助项目(60477031) 解放军理工大学预研基金资助项目(0603005) 南昌航空大学重点科研项目(EA200908019)
关键词 超声探测 混凝土 合成孔径聚焦 波包原子分解 ultrasonic detection concrete SAFT atomic decomposition of wavepacket
作者简介 李秋锋(1976-),男,江西南昌人,博士,主要研究方向为超声检测及检测信号处理。
  • 相关文献

参考文献10

  • 1CHAIX J F,GARNIER V,CORNELOUP G.Concrete damage evolution analysis by backscattered ultrasonic waves[J].NDT&E International,2003,36 (7):461-469. 被引量:1
  • 2PRASSIANAKIS I N,PRASSIANAKIS N I.Ultrasonic testing of non-metallic materials:concrete and marble[J].Theoretical and Applied Fracture Mechanics,2004,42(22):191-198. 被引量:1
  • 3SCHICKERT M.Ultrasonic NDE of concrete[A].2002 IEEE ultrasonics symposium[C].NY:Institute of Electrical and Electronics Engineers (IEEE),2002:718-727. 被引量:1
  • 4DELSANTO P P,HIRSEKORN S.A unified treat-ment of nonclassical nonlinear effects in the propagation of ultrasound in heterogeneous media[J].Ultrasonics,2004,42(1):1 005-1 010. 被引量:1
  • 5ANUGONDA P,WIEHN J S,TURNER J A.Diffusion of ultrasound in concrete[J].Ultrasonics,2001,39(6):429-435. 被引量:1
  • 6SCHICKERT M.Progress in ultrasonic imaging of concrete[J].Materials and Structures,Special issue on Concrete Science and Engineering,2005,38 (9):807-815. 被引量:1
  • 7孙宝申,张凡.合成孔径聚焦声成像时域算法研究[J].声学学报,1997,22(1):42-49. 被引量:8
  • 8孙宝申,沈建中.合成孔径聚焦超声成像(一)[J].应用声学,1993,12(3):43-48. 被引量:32
  • 9孙宝申,沈建中.合成孔径聚焦超声成像(二)[J].应用声学,1993,12(5):39-44. 被引量:19
  • 10SHI Li-hua,CHEN Bin,GAO Cheng.Design and modeling of signals by using wavelets for the pulseecho NDT approaches[A].Proc of SPIE-int soc opt eng[C].Washington:SPIE,2001,4 336 (5):146-153. 被引量:1

二级参考文献3

共引文献43

同被引文献43

  • 1孙宝申,沈建中.合成孔径聚焦超声成像(一)[J].应用声学,1993,12(3):43-48. 被引量:32
  • 2孙宝申,沈建中.合成孔径聚焦超声成像(二)[J].应用声学,1993,12(5):39-44. 被引量:19
  • 3蔡兰,兰从庆.合成孔径聚焦成像方法研究[J].武汉工业大学学报,1996,18(1):84-87. 被引量:7
  • 4冯诺.超声手册[M].南京:南京大学出版社,1999.357. 被引量:28
  • 5STEPINSKI T,LINGVALL F.Optimized algorithm for synthetic aperture imaging[C] //2004 IEEE Ultrasonics Symposium.Sweden:Uppsala University,2004:701-704. 被引量:1
  • 6SHI Li-hua,CHEN Bin,GAO Cheng.Design and modeling of signals by using wavelets for the pulse-echo NDT approaches[J].SPIE,2001,4336:146-153. 被引量:1
  • 7JASTRZEBSKI M,DUSATKO T,FORTIN J,et al.Enhancement of synthetic apperture focusing technique (SAFT) by advanced signal processing[C] //16th World Conference on nondestructive Testing.Montreal,Canada:University of Toronto,2004:11-18. 被引量:1
  • 8SIN S K,CHEN Chi-hau.A comparison of deconvolution techniques for the ultrasonic nondestructive evaluation of materials[J].IEEE Trans.on Image Processing,1992,1 (1):3-10. 被引量:1
  • 9TANG X M,ZHU Z,TOKOZ M N.Radiation patterns of compressional sheartransducers at the surface of an elastic half-shape[J].Acoust.Soc.Am.,1994,95(1):71-76. 被引量:1
  • 10SCHICKERT M, KRAUSE M, MULLER W. Ultra- sonic imaging of concrete elements using reconstruction by synthetic aperture focusing technique[J]. Journal of Materials in Civil Engineering, 2003, 15 : 235-246. 被引量:1

引证文献4

二级引证文献7

投稿分析

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部 意见反馈
新型冠状病毒肺炎防控与诊疗专栏