THE STATE OF THE ART OF LASERS MAKES IT FEASIBLE TO "LISTEN" TO REMOTE TARGETS WHICH CAN BE APPRECIABLE DISTANCES AWAY.

THE STATE OF THE ART OF LASERS MAKES IT FEASIBLE TO "LISTEN" TO REMOTE TARGETS WHICH CAN BE APPRECIABLE DISTANCES AWAY. THIS IS ACCOMPLISHED BY USING A LASER AS A DOPPLER MOTION DETECTOR. ALSO BECUASE OF THE UNIQUE CHARACTERISTICS OF VIBRATING MACHINERY, (E.G., TANK WITH ITS ENGINE RUNNING) ITS SIGNAL CAN BE READILY SEPARATED FROM THE DOPPLER SHIFT THAT WOULD RESULT FROM THE GROUND RETURN FROM A LASER BEAMED BROM A RAPIDLY MOVING AIRCRAFT OR FROM RETURNS FROM LEAVES MOVING IN THE WIND. THE OBJECTIVE OF THIS RESEARCH PROGRAM IS TO SHOW THAT AN ACTIVE "REAL TARGET" WILL UNIQUELY MODULATE REFLECTED LASER ENERGY DUE TO VIBRATIONS ON THE TARGET'S SURFACE CAUSED BY ACTIVITY WITHIN THE TARGET (E.G. ENGINE RUNNING) OR BY THE TARGET (I.E. MOVEMENT OF TRACKS, WHEELS).