Sinusoidal Parameter Estimation and Application to Eddy Current NDT Data Records
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The general problem of assessing eddy current data from steam generators is complicated due to the presence of random noise and low frequency sinusoidal interference signals. The low frequency sinusoidal interference originates from periodic variations in the material properties or dimensions caused by manufacturing processes, behaviour of the component of the inspection system such as probe wobbling. The estimation of the sinusoidal parameters is obtained by using the cyclic-MUSIC algorithm which is a combination of two well known algorithms, Relaxed and MUSIC algorithms. The removal process generates waveforms from the estimated parameters and subtracts them from the original data. Application to several data records showed that using all the estimated parameters with two sinusoidal waveforms is the best fit due to the nature of the data. Moreover, the performance assessment was based on power measurements and correlation functions.
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Copyright © 2014 the author(s). Theses may be used for non-commercial research, educational, or related academic purposes only. Such uses include personal study, research, scholarship, and teaching. Theses may only be shared by linking to Carleton University Institutional Repository and no part may be used without proper attribution to the author. No part may be used for commercial purposes directly or indirectly via a for-profit platform; no adaptation or derivative works are permitted without consent from the copyright owner.
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- 2014
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