Year
1996
Abstract
The purpose of an intelligent alarm analysis system is to provide complete and manageable information to a central alarm station operator by applying alarm processing and fiwion tectilques to sensor information. This paper discusses the sensor fhsion approach taken to perfbrm intelligent alarm analysis for the Advanced Exterior Sensor (AES). The AES is an intrusion detection and assessment system designed for wide-area coverage, quick deploymen~ low t%lse/nuisance alarm operati~ and immediate visual assessment. It combines three sensor technologies (visible, infhre~ and millimeter wave radar) collocated on a compact and portable remote sensor module. The remote sensor module rotates at a rate of 1 revolution per second to detect and track motion and provide assessment in a continuous 360° field-of-regard. Sensor fision techniques are used to correlate and integrate the track data from these three sensors into a single track for operator observation. Additional inputs to the fbsion process include environmental dam knowledge of sensor performance under certain weather conditions, sensor priority, and recent operator feedback. A confidence value is assigned to the track as a result of the tiion process. This helps to reduce nuisance alarms and to increase operator confidence in the system while reducing the workload of the operator.