Ultrasonic imaging in highly attenuating materials with Walsh-Hadamard codes and the decomposition of the time reversal operator
- Resource Type
- Conference
- Authors
- Villaverde, Eduardo Lopez; Robert, Sebastien; Prada, Claire
- Source
- 2016 IEEE International Ultrasonics Symposium (IUS) Ultrasonics Symposium (IUS), 2016 IEEE International. :1-4 Sep, 2016
- Subject
- Fields, Waves and Electromagnetics
Signal to noise ratio
Sparse matrices
Focusing
Arrays
Data acquisition
Symmetric matrices
non-destructive testing
array ultrasonic imaging
time reversal
attenuating material
defect characterization
- Language
- ISSN
- 1948-5727
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.