ARMA Processing for NDE Ultrasonic Imaging

Pao, Yoh‐Han; El-Sherbini, Ahmed

doi:10.1007/978-1-4684-1194-2_41

Review of Progress in Quantitative Nondestructive Evaluation 1984

DOI: 10.1007/978-1-4684-1194-2_41

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ARMA Processing for NDE Ultrasonic Imaging

Yoh‐Han Pao

Ahmed El-Sherbini

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1985

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Acoustic Tomographic Reconstruction of Anomalies in Three-Dimensional Bodies

Bevensee

1985

Review of Progress in Quantitative Nondestructive Evaluation

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We present a theory of acoustic tomography based on data processing shear wave scattered field over an observational plane, including frequency and polarization diversities. The theory is based on the Gubernatis formulation of scattering and does not require solution of the Fredholm equation for material displacement u. An essential feature of the theory is an expansion of VjkUk in even powers of frequency to obtain an "equivalent frequency insensitive" source in the anomaly.We treat data inversion both in cartesian coordinates via the twodimensional fast-Fourier transform (FFT) and in cylindrical coordinates via the one-dimensional Hankel transform. We note the advantages of polarization diversity. Sampling formulae are quoted. AR (auto regressive) and ARMA (auto regressive moving-average) modeling are mentioned as means of improving anomaly resolution. Both frequency and polarization diversities tend to reduce speckle noise.

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Acoustic Tomographic Reconstruction of Anomalies in Three-Dimensional Bodies

Bevensee

1985

Review of Progress in Quantitative Nondestructive Evaluation

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show abstract

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ARMA Processing for NDE Ultrasonic Imaging

Cited by 1 publication

References 10 publications

Acoustic Tomographic Reconstruction of Anomalies in Three-Dimensional Bodies

Acoustic Tomographic Reconstruction of Anomalies in Three-Dimensional Bodies

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