Patent ID: 7755041

Claim:
A method for remotely detecting a triacetone triperoxide cloud having a large optical absorption coefficient (i.e., optical absorption cross section) associated with a triacetone triperoxide explosive attached to a person comprising the steps of: employing a differential-absorption lidar system including differential-absorption lidar lasers to transmit a laser beam toward the person; operating the differential-absorption lidar lasers at differing wavelengths during said transmission of said laser beam; detecting a backscattered laser beam reflected from the person; detecting a backscattered laser beam reflected from an atmospheric aerosol lidar target or atmospheric cloud lidar target; and detecting a cloud of triacetone triperoxide having a large optical absorption coefficient (i.e., optical absorption cross section) in front of the person and between the person and the differential-absorption lidar system by receiving a differential-absorption signal having characteristics that identify the triacetone triperoxide.