Cross-spectral phase method for time delay estimation in acoustic leak detection
Cross-spectral phase method for time delay estimation in acoustic leak detection
This paper introduces a method for estimating time delays in acoustic/vibration leak signals within water distribution systems, using linear segmentation of the cross-spectral phase. The method applies linear regression to undistorted regions of the phase, automatically identified by a simple algorithm, to calculate the time delay. Simulation and experimental results demonstrate that the method accurately estimates time delays without the need for pre-filtering, even in the presence of multiplicative noise that distorts the cross-spectral phase—offering a significant improvement over correlation-based techniques. Furthermore, the method provides a confidence interval that quantifies the uncertainty in the estimated leak location, thereby enhancing the reliability of leak localisation.
confidence interval, cross-power spectrum, leakage, linear regression, localisation, phase, time delay estimation, Leakage, Phase, Linear regression, Time delay estimation, Confidence interval, Localisation, Cross-power spectrum
Uchendu, Ndubuisi
4d00be49-162b-4d25-b4cf-b253f06b567c
Muggleton, Jen
2298700d-8ec7-4241-828a-1a1c5c36ecb5
White, Paul
2dd2477b-5aa9-42e2-9d19-0806d994eaba
25 March 2025
Uchendu, Ndubuisi
4d00be49-162b-4d25-b4cf-b253f06b567c
Muggleton, Jen
2298700d-8ec7-4241-828a-1a1c5c36ecb5
White, Paul
2dd2477b-5aa9-42e2-9d19-0806d994eaba
Uchendu, Ndubuisi, Muggleton, Jen and White, Paul
(2025)
Cross-spectral phase method for time delay estimation in acoustic leak detection.
Applied Acoustics, 235, [110695].
(doi:10.1016/j.apacoust.2025.110695).
Abstract
This paper introduces a method for estimating time delays in acoustic/vibration leak signals within water distribution systems, using linear segmentation of the cross-spectral phase. The method applies linear regression to undistorted regions of the phase, automatically identified by a simple algorithm, to calculate the time delay. Simulation and experimental results demonstrate that the method accurately estimates time delays without the need for pre-filtering, even in the presence of multiplicative noise that distorts the cross-spectral phase—offering a significant improvement over correlation-based techniques. Furthermore, the method provides a confidence interval that quantifies the uncertainty in the estimated leak location, thereby enhancing the reliability of leak localisation.
Text
Cross-Spectral Phase Method for Time Delay Estimation in Acoustic Leak Detection REVIEW
- Accepted Manuscript
Text
1-s2.0-S0003682X25001677-main
- Version of Record
More information
Accepted/In Press date: 18 March 2025
e-pub ahead of print date: 25 March 2025
Published date: 25 March 2025
Keywords:
confidence interval, cross-power spectrum, leakage, linear regression, localisation, phase, time delay estimation, Leakage, Phase, Linear regression, Time delay estimation, Confidence interval, Localisation, Cross-power spectrum
Identifiers
Local EPrints ID: 500088
URI: http://eprints.soton.ac.uk/id/eprint/500088
ISSN: 0003-682X
PURE UUID: 9ec98e6b-d89f-41c5-a5db-a3b3c58bc0a8
Catalogue record
Date deposited: 15 Apr 2025 16:54
Last modified: 27 Aug 2025 01:34
Export record
Altmetrics
Contributors
Author:
Ndubuisi Uchendu
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics