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Studies into the detection of buried objects (particularly optical fibres) in saturated sediment. Part 1: background

By T.G. Leighton and R.C.P. Evans

Abstract

Damaged submarine fibre optic telecommunication cables have, in the past, been<br/>located by the use of remotely operated underwater vehicles. These are fitted with<br/>sensors which have the capability to detect the metal shielding in the metallic cores<br/>used in cable technology. However, it is anticipated that the next generation of cables<br/>will have a much reduced metal content, their strength being derived from synthetic<br/>materials such as aramid fibres. Such structures will have greatly reduced contrast for<br/>detection by both electromagnetic and acoustic radiations transmitted from an<br/>underwater vehicle, to then propagate through the seabed and scatter off the cable.<br/>The detection of such cables will require new approaches.<br/>This report is the first in a series of five written in support of the article “The<br/>detection by sonar of difficult targets (including centimetre-scale plastic objects and<br/>optical fibres) buried in saturated sediment” by T G Leighton and R C P Evans,<br/>written for a Special Issue of Applied Acoustics which contains articles on the topic of<br/>the detection of objects buried in marine sediment. Further support material can be<br/>found at http://www.isvr.soton.ac.uk/FDAG/uaua/target_in_sand.HTM

Topics: GC, QC, TC
Publisher: University of Southampton
Year: 2007
OAI identifier: oai:eprints.soton.ac.uk:46558
Provided by: e-Prints Soton

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