Polarization Characteristics of Reflected Pulses of Ultrawideband Radiation at Detection of Metal Objects in Conditions of Limited Visibility

The measurement results of polarization characteristics of ultrawideband pulses reflected from metal objects of different sizes are presented. A transmitting antenna array of 2x2 combined antennas with linear polarization was used. The antenna array was excited with a bipolar voltage pulse of duration 0.5 ns. Pulses reflected from metal objects were recorded by a dual-polarized receiving antenna array. A polarization structure of the pulses reflected from the objects was measured in the presence and absence of a dielectric barrier between the transceiver and the objects. The influence of the wall inhomogeneities on the polarization characteristics was demonstrated.