Research on millimeter-wave radiometric imaging for concealed contraband detection on personnel

As a result of the fact that millimeter-wave (MMW) can penetrate through smoke, fog, clouds and clothing of certain thickness, the MMW radiometric imaging has established itself in a wide range of military and civil practical applications. Based on the particular analysis of MMW radiometric imaging model which is used for concealed contraband detection on personnel, a dual-channel radiometric imaging system has been implemented at W-band with the mode of two-dimensional planar scanning. In addition, a series of experiments are carried out indoors and outdoors to verify the performance of this imaging system. Furthermore, the original experimental results are presented and analyzed to validate the significance of the imaging model and it is indicated that the imaging system is capable of detecting the metal objects hidden underneath clothing.