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arXiv 1205.3753cs.ITmath.IT
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基于高阶谱分析和小波变换的超声信号盲反卷积

Blind Deconvolution of Ultrasonic Signals Using High-Order Spectral Analysis and Wavelets

Roberto H. Herrera, Eduardo Moreno, Héctor Calas, Rubén Orozco

摘要:

超声法缺陷检测受脉冲宽度的限制。可以通过利用脉冲的先验信息的反卷积过程或通过其估计来提高分辨率。本文提出了一种基于小波收缩的维纳滤波器正则化方法,用于反射率函数的估计。最后的结果表明,提高了信噪比与更好的轴向分辨率。

英文摘要:

Defect detection by ultrasonic method is limited by the pulse width. Resolution can be improved through a deconvolution process with a priori information of the pulse or by its estimation. In this paper a regularization of the Wiener filter using wavelet shrinkage is presented for the estimation of the reflectivity function. The final result shows an improved signal to noise ratio with better axial resolution.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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