Patent AT-E401637-T1: [Translated] MONITORING SYSTEM FOR DETERMINING POSITION IN A THREE-DIMENSIONAL SPACE

A surveillance system using an array of detectors onto which energy from the scene under surveillance is focused can indicate the direction of an event that has been recognised. The invention uses two or more arrays to locate events in three dimensions, and to define regions within the three dimensional space being surveyed. The events are located by detecting which elements from the respective arrays are stimulated by the occurrence of an event, and determining the location of the event to be at the intersection of the fields of view of the stimulated elements. <IMAGE>