AN OPTICAL FIBER INTRUSION LOCATION (FIBLOC) SENSOR FOR SURFACE AND SUBSURFACE PERIMETER PROTECTION

THE PROPOSED FIBLOC SENSOR PROVIDES AN ECONOMIC MEANS TO PROTECT, LITERALLY, MILES OF A PREFERRED PERIMETER REGION AGAINST UNAUTHORIZED INTRUSIONS. THE OPTICAL FIBERS EMPLOYED INT HE FIBLOC SENSOR PROPAGATE CW OR PULSED INFRARED LIGHT SIGNALS WHOSE TRANSMISSION AND/OR REFLECTION SENSITIVITY IS AFFECTED BY MECHANICAL PRESSURE SUCH AS WOULD BE PRODUCED BY THE DISTENSION OF SURFACED MOUNTED FIBERS ALONG, FOR EXAMPLE, A CHAIN LINK FENSE OR BY A FOOTSTEP ABOVE SUBSURFACED FIBER BUNDLES. THE DISTANCE FROM THE MONITORING STATION TO THE POINT OF PERIMETER INTRUSION IS DETERMINED BY SEVERAL NOVEL FIBER BUNDLE CONFIGURATIONS AND SIGNAL PROCESSING SCHEMES DESCRIBED IN THE PROPOSAL. THE PRINCIPAL TASK OF THE PHASE 1 PROGRAM IS TO STUDY AND EVALUATE THESE SCHEMES IN THE LABORATORY WITH SOME FIELD EXPERIMENTS AND TO RECOMMEND A PREFERRED AND COST-EFFECTIVE CONFIGURATION FOR THE PHASE 2 DEVELOPMENT EFFORT.