Abstract
A simultaneous Distributed Acoustic Sensing (DAS) and Distributed Temperature Sensing (DTS) system is presented. In DAS, perturbations across hundreds of metres of fibre are detected by the use of phase-sensitive Optical Time-Domain Reflectometry (OTDR) from Rayleigh backscattering caused by these perturbations. DTS relies on Raman OTDR in a similar fashion. The capabilities of the DAS system are presented, showing detection limits on the order of sub Hz to kHz while achieving spatial resolution on the order of metres. The ability to differentiate between different types of perturbation including tapping, transient signals and smooth, strumming motion is demonstrated.
Original language | English |
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Title of host publication | Proceedings of the 31st International Ocean and Polar Engineering Conference |
Publisher | International Society of Offshore and Polar Engineers |
Pages | 1056-1060 |
Number of pages | 5 |
ISBN (Print) | 9781880653821 |
Publication status | Published - 20 Jun 2021 |
Event | 31st International Ocean and Polar Engineering Conference 2021 - Virtual, Online Duration: 20 Jun 2021 → 25 Jun 2021 |
Conference
Conference | 31st International Ocean and Polar Engineering Conference 2021 |
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Abbreviated title | ISOPE 2021 |
City | Virtual, Online |
Period | 20/06/21 → 25/06/21 |
Keywords
- Distributed acoustic sensing
- Distributed temperature sensing
- Fiber sensing
- Power cable monitoring
ASJC Scopus subject areas
- Energy Engineering and Power Technology
- Ocean Engineering
- Mechanical Engineering