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Defect Detection in Correlated Noise
AIP Conference Proceedings
  • Aleksandar Dogandžić, Iowa State University
  • Nawanat Eua-Anant, Iowa State University
Document Type
Conference Proceeding
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We present methods for detecting NDE defect signals in correlated noise having unknown covariance. The proposed detectors are derived using the statistical theory of generalized likelihood ratio (GLR) tests and multivariate analysis of variance (MANOVA). We consider both real and complex data models. To allow accurate estimation of the noise covariance, we incorporate secondary data containing only noise into detector design. Probability distributions of the GLR test statistics are derived under the null hypothesis, i.e. assuming that the signal is absent, and used for detector design. We apply the proposed methods to simulated and experimental data and demonstrate their superior performance compared with the detectors that neglect noise correlation.

The following article appeared in AIP Conference Proceedings 700 (2004): 628 and may be found at doi:10.1063/1.1711680.

Copyright 2004 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.
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American Institute of Physics
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Citation Information
Aleksandar Dogandžić and Nawanat Eua-Anant. "Defect Detection in Correlated Noise" AIP Conference Proceedings Vol. 700 (2004) p. 628 - 635
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