Abstract
In recent decades, there has been a great interest in the use of ultra-wideband (UWB) radar methods for detecting living biological objects hidden behind various barriers. The wide frequency band of the UWB radiation makes it possible to provide a high penetrating power along with a spatial resolution sufficient to detect oscillations characteristic of the respiration of a living organism. This article considers a model of an ultra-wideband radar for detecting a living biological object located behind an optically-nontransparent obstacle. The considered radar model consists of two channels, each of which has two independent antennas with orthogonal polarizations, that supports implement processing orthogonal polarization echo signals. A method is proposed to increase the information content by using the amplitude, phase and polarization characteristics of the reflected signals. This is done in order to isolate the signals reflected from biological objects against the background of interfering reflections. The use of the proposed method leads to reduce amount of processed data and a decrease the probability of false detection.
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