THE MODELING OF THE DETECTION OF WEAPONS ON THE HUMAN BODY BY PULSED IRRADIATION

The possibilities of detection and identification of metal items and especially weapons, with the size of the order of one to two decimeters, which are hidden on human body, based on the use of phased array antenna, which includes ultra-wideband transceivers are considered. Through the use of UWB-signals the excitation of oscillations at the resonant frequencies, and especially at the main resonance, that defines a clear object selection. Broadband irradiation object of microwave signal in the corresponding frequency range is several hundred MHz, leads to the occurrence of low-frequency resonances and delay response for the receiver when using phased arrays for imaging radio images. Further processing of the reflected signal includes the classification of a hidden object based on the respective resonance frequencies, which allows to distinguish the guns and knives from useful items such as mobile phones and cameras

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