Static Human Localization Using FMCW MIMO Radar

Although a FMCW MIMO radar can effectively track moving people, it is a challenge for radar to detect static people. When a person is at rest, radar signals reflected from the human body are mixed up with that from stationary objects. In this paper, we present a static human localization method using FMCW MIMO radar. The method uses radar signal variations and spectral characteristics caused by vital activities to identify human locations. We test the proposed method with an off-the-shelf radar. The results show that our method can detect human presence and get human locations in a large area. Furthermore, the detected human location can be used to judge whether the target is lying on the floor, which is helpful for fall detection.