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An approximate inverse scattering technique for reconstructing blockage profiles in water pipelines using acoustic
Liwen Jing1, Zhao Li1, Wenjie Wang1
1Department of Electronic and Computer Engineering, the Hong Kong University of Science and Technology, Hong Kong, China.
Abstract:
An approximate inverse scattering technique is proposed for reconstructing cross-sectional area variation along water pipelines to deduce the size and position of blockages. The technique allows the reconstructed blockage profile to be written explicitly in terms of the measured acoustic reflectivity. It is based upon the Born approximation and provides good accuracy, low computational complexity, and insight into the reconstruction process. Numerical simulations and experimental results are provided for long pipelines with mild and severe blockages of different lengths. Good agreement is found between the inverse result and the actual pipe condition for mild blockages.
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