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Proceedings Paper

Nuisance alarm suppression techniques for fibre-optic intrusion detection systems
Author(s): Seedahmed S. Mahmoud; Yuvaraja Visagathilagar; Jim Katsifolis
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Paper Abstract

The suppression of nuisance alarms without degrading sensitivity in fibre-optic intrusion detection systems is important for maintaining acceptable performance. Signal processing algorithms that maintain the POD and minimize nuisance alarms are crucial for achieving this. A level crossings algorithm is presented for suppressing torrential rain-induced nuisance alarms in a fibre-optic fence-based perimeter intrusion detection system. Results show that rain-induced nuisance alarms can be suppressed for rainfall rates in excess of 100 mm/hr, and intrusion events can be detected simultaneously during rain periods. The use of a level crossing based detection and novel classification algorithm is also presented demonstrating the suppression of nuisance events and discrimination of nuisance and intrusion events in a buried pipeline fibre-optic intrusion detection system. The sensor employed for both types of systems is a distributed bidirectional fibre-optic Mach Zehnder interferometer.

Paper Details

Date Published: 30 January 2012
PDF: 8 pages
Proc. SPIE 8351, Third Asia Pacific Optical Sensors Conference, 83513J (30 January 2012); doi: 10.1117/12.915950
Show Author Affiliations
Seedahmed S. Mahmoud, Future Fibre Technologies Pty Ltd. (Australia)
Yuvaraja Visagathilagar, Future Fibre Technologies Pty Ltd. (Australia)
Jim Katsifolis, Future Fibre Technologies Pty Ltd. (Australia)

Published in SPIE Proceedings Vol. 8351:
Third Asia Pacific Optical Sensors Conference
John Canning; Gangding Peng, Editor(s)

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