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• W2738974727 abstract "Abstract Leak detection and localisation is critical for water distribution system pipelines. This paper examines the use of the time-domain impulse response function (IRF) for leak detection and localisation in a pressurised water pipeline with a pseudo random binary sequence (PRBS) signal excitation. Compared to the conventional step wave generated using a single fast operation of a valve closure, a PRBS signal offers advantageous correlation properties, in that the signal has very low autocorrelation for lags different from zero and low cross correlation with other signals including noise and other interference. These properties result in a significant improvement in the IRF signal to noise ratio (SNR), leading to more accurate leak localisation. In this paper, the estimation of the system IRF is formulated as an optimisation problem in which the l 2 norm of the IRF is minimised to suppress the impact of noise and interference sources. Both numerical and experimental data are used to verify the proposed technique. The resultant estimated IRF provides not only accurate leak location estimation, but also good sensitivity to small leak sizes due to the improved SNR." @default.
• W2738974727 created "2017-07-31" @default.
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• W2738974727 date "2018-01-01" @default.
• W2738974727 modified "2023-10-17" @default.
• W2738974727 title "Least squares deconvolution for leak detection with a pseudo random binary sequence excitation" @default.
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• W2738974727 doi "https://doi.org/10.1016/j.ymssp.2017.07.003" @default.
• W2738974727 hasPublicationYear "2018" @default.
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