Ultrasonic imaging in highly attenuating materials with Walsh-Hadamard codes and the decomposition of the time reversal operator - Archive ouverte HAL Access content directly
Conference Papers Year : 2016

Ultrasonic imaging in highly attenuating materials with Walsh-Hadamard codes and the decomposition of the time reversal operator

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Abstract

In this work, the total focusing method is used to image defects in a high density polyethylene pipe. The viscoelastic attenuation of this material corrupts the images with a high electronic noise. To improve the image quality, the decomposition of the time reversal operator method is combined with spatial Walsh-Hadamard coded transmissions before calculating the images.
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Dates and versions

cea-01811903 , version 1 (11-06-2018)

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E.L. Villaverde, S. Robert, C. Prada. Ultrasonic imaging in highly attenuating materials with Walsh-Hadamard codes and the decomposition of the time reversal operator. IEEE International Ultrasonics Symposium, IUS, 2016, Tours, France. ⟨10.1109/ULTSYM.2016.7728744⟩. ⟨cea-01811903⟩
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