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

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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https://hal-cea.archives-ouvertes.fr/cea-01811903
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Submitted on : Monday, June 11, 2018 - 8:04:13 AM
Last modification on : Thursday, July 4, 2019 - 11:00:06 AM

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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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