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.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.