Investigating the response of distributed fibre optic acoustic sensing for subsea cable motion monitoring

James Jackson, John Macarthur, Brian Sellar, William N. Macpherson, Henry T. Bookey

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

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 languageEnglish
Title of host publicationProceedings of the 31st International Ocean and Polar Engineering Conference
PublisherInternational Society of Offshore and Polar Engineers
Pages1056-1060
Number of pages5
ISBN (Print)9781880653821
Publication statusPublished - 20 Jun 2021
Event31st International Ocean and Polar Engineering Conference 2021 - Virtual, Online
Duration: 20 Jun 202125 Jun 2021

Conference

Conference31st International Ocean and Polar Engineering Conference 2021
Abbreviated titleISOPE 2021
CityVirtual, Online
Period20/06/2125/06/21

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

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