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- W2023391644 abstract "Time-delay is a very significant measurement in the field of non-destructive test. The accuracy of time-delay estimation (TDE) directly influences the precision and reliability of the relative measurement method used in non-destructive testing, such as leak location in underground pipeline leak test, ultrasonic blood velocity measurement, ultrasonic material stress measurement etc. In this paper, methods based on third-order cumulant are applied, including Cross Third-order Cumulant Method and Bispectrum Method, to ultrasonic time delay estimation. Higher-order cumulant can effectively suppress big noise interference. According to the principle that the third moment sequence of a zero-mean Gaussian process is identical to zero, we can use third-order cumulant to estimate time delay. Comparing with Generalized Cross-correlation Method, these methods can suppress the effect of correlated Gaussian noise sources and can be used as the substitution of Generalized Cross-correlation Method." @default.
- W2023391644 created "2016-06-24" @default.
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- W2023391644 date "2013-06-01" @default.
- W2023391644 modified "2023-09-24" @default.
- W2023391644 title "Time delay estimation via third-order cumulant" @default.
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- W2023391644 doi "https://doi.org/10.1109/fendt.2013.6635533" @default.
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