Abstract: In one embodiment, detecting a target includes directing a laser beam towards an area and detecting the laser beam reflected from the area. Whether the received laser beam comprises an optically augmented reflection indicating retro-reflection from a target is determined. The target indicates presence of an explosive device. The target is detected if the received laser beam comprises the optically augmented reflection.

Abstract: In one embodiment of the disclosure, an explosive device detection system includes a thermal imaging camera and at least one radio frequency receiver that is coupled to a signal processing circuit. The thermal imaging camera is operable to produce a first electrical signal indicative of thermal energy radiated by an explosive device. The at least one radio frequency receiver is operable to produce at least one second electrical signal indicative of electro-magnetic energy emitted by the explosive device. The signal processing circuit is configured to combine the first electrical signal and the at least one second electrical signal on a display such that the explosive device is aligned on the display.

Abstract: In one embodiment, detecting a target includes directing a laser beam towards an area and detecting the laser beam reflected from the area. Whether the received laser beam comprises an optically augmented reflection indicating retro-reflection from a target is determined. The target indicates presence of an explosive device. The target is detected if the received laser beam comprises the optically augmented reflection.

Abstract: In one embodiment of the disclosure, an explosive device detection system includes a thermal imaging camera and at least one radio frequency receiver that is coupled to a signal processing circuit. The thermal imaging camera is operable to produce a first electrical signal indicative of thermal energy radiated by an explosive device. The at least one radio frequency receiver is operable to produce at least one second electrical signal indicative of electro-magnetic energy emitted by the explosive device. The signal processing circuit is configured to combine the first electrical signal and the at least one second electrical signal on a display such that the explosive device is aligned on the display.

Abstract: With a controlled scanning device (5, 6, 7), such as a FLIR, the scene which provides a modulated source is scanned with the scanning frequency being changed. This results in scanning of the scene with two different known scanning frequencies. By knowing the change in sampling frequency and correlating the changes in the Fourier frequency results in a spectrum analyzer (13), the frequency of the modulated source, including a source modulated at frequencies higher than the sampling rate of the sensor, is remotely measured.

Abstract: An infrared tracker for tracking a carrier in clutter comprises a pyrotechnically heated emitter, a beam concentrator, and a blanking means all of which are mounted on the carrier, and a command link, a thermal detector, a display signal storage means, a display, and a comparator all of which are located remotely to the carrier, said command link operative to provide an emitter start-up signal and a blanking command signal, said emitter and blanking means operative in response to the command signals sent to the carrier when there is clutter present that might be confused with the carrier, respectively, to actuate the emitter and blanking means, said display storage means operative to store a first video frame of the carrier while the emitter is blanked out, and said comparator for ocmparing the first video frame without the emitter to a subsequent video frame including the emitter to distinguish between the clutter is being substantially canceled.