Abstract: Problems of the detection of conductive and dielectric targets buried below the surface with active-mode microwave radiometer are discussed. The broadband noise source is used to increase the subsurface detection possibilities of microwave radiometry at active mode. Additionally the bifocal receiving-emitting antenna is used for the increasing of the spatial resolution. The microwave radiometer is designed for measurements of reflection coefficient distribution of searched subsurface part and for synthesis of the radio images. Some of the proposed approaches have been used for detection of anti-infantry mines buried in the sand. The results of laboratory trials are presented. Similar technology was used by us for searching objects like guns, knives, plastic elements, etc. hidden under clothing. !5
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