Using low-cost reflective tags placed on objects, LBIMS maps the precise location of high-value items. The laser can scan many points per second and can detect small changes - less than a centimeter - in the reflected signal, meaning tampering can be immediately detected.
The precision of the system is made possible by a high-resolution two-axis laser scanner capable of looking at a 60-degree field of view in 0.0005-degree increments, dividing the field of view into more than 10 billion individual pointing locations. A camera with comparable resolution over the same field of view would require a 10,000-megapixel detector.
Tests performed at the International Atomic Energy Agency in Vienna, Austria, and at the Joint Research Center in Ispra, Italy, have shown LBIMS to be relatively impervious to various attacks designed to foil the system. The Joint Research Center is involved in the development and testing of highly sophisticated laser scanning systems for a variety of applications. Even tests in highly reflective rooms such as one with stainless steel walls proved no challenge for LBIMS.
May 18, 2007
Long range laser surveillance
Laser surveillance of reflective tags offers high precision and long range tracking alternative to short range RFIDs