A Blind Source Separation Technique for Extracting Sinusoidal Interferences in Ultrasonic Non-Destructive Testing

Authors:
Jorge Igual;Andrés Camacho;Luis Vergara
Affiliations:
Department Comunicaciones, Universidad Politécnica Valencia, Camino de Vera, S/N, Valencia 46020, Spain;Department Comunicaciones, Universidad Politécnica Valencia, Camino de Vera, S/N, Valencia 46020, Spain;Department Comunicaciones, Universidad Politécnica Valencia, Camino de Vera, S/N, Valencia 46020, Spain
Venue:
Journal of VLSI Signal Processing Systems
Year:
2004

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Abstract

Sinusoidal interferences are found in ultrasonic signals when we try to characterize a material, as for example interferences coming from PC cards. We are interested in obtaining a robust method that cancels these interferences preserving the waveform of the signal. A Blind Source Separation method to extract these sinusoids is presented in this paper. We will get so many linear mixtures of the backscattering echo of the material and the sinusoids as we need from different pulse responses of the material.