Research Article

A Multifrequency Radar System for Detecting Humans and Characterizing Human Activities for Short-Range Through-Wall and Long-Range Foliage Penetration Applications

Figure 14

Detection of a small trihedral target placed 1.22 m (4 ft) behind a 10.2 cm (4 in) thick brick wall. Both no target and target present cases are shown, as well as the implementation of the background subtraction algorithm which suppresses non-target responses and enhances target response.
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