Nuisance alarm suppression techniques for fibre-optic intrusion detection systems

Seedahmed S. Mahmoud; Yuvaraja Visagathilagar; Jim Katsifolis

doi:10.1117/12.915950

30 January 2012 Nuisance alarm suppression techniques for fibre-optic intrusion detection systems

Seedahmed S. Mahmoud, Yuvaraja Visagathilagar, Jim Katsifolis

Proceedings Volume 8351, Third Asia Pacific Optical Sensors Conference; 83513J (2012) https://doi.org/10.1117/12.915950
Event: Asia Pacific Optical Sensors Conference, 2012, Sydney, Australia

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.

Citation Download Citation

Seedahmed S. Mahmoud, Yuvaraja Visagathilagar, and Jim Katsifolis "Nuisance alarm suppression techniques for fibre-optic intrusion detection systems", Proc. SPIE 8351, Third Asia Pacific Optical Sensors Conference, 83513J (30 January 2012); https://doi.org/10.1117/12.915950

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