A Robust Detection Algorithm Using Frequency Diverse Multiple Observations
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Begun in 1973, the Review of Progress in Quantitative Nondestructive Evaluation (QNDE) is the premier international NDE meeting designed to provide an interface between research and early engineering through the presentation of current ideas and results focused on facilitating a rapid transfer to engineering development.
This site provides free, public access to papers presented at the annual QNDE conference between 1983 and 1999, and abstracts for papers presented at the conference since 2001.
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Abstract
The detection of a flaw embedded in large-grained material using high-resolution broadband ultrasonic pulses is hindered by high amplitude interfering echoes (speckle) due to the unresolvable grain boundaries. The application of an optimal linear processor in this case is complicated by the fact that statistical parameters of the grain noise are not known a priori