Key result
A new signal processing method called the projection matrix method was proposed and experimentally validated for extracting heart rate signals from respiratory variation using FMCW radar.
The projection matrix method applied to FMCW radar is a valid approach for extracting heart rate signals by suppressing unrequired respiratory variation components.
Small displacement detection has been studied for extracting heart rate signal from the respiratory variation component of the human body with the FMCW radar method. And a new signal processing method of vital signal has been proposed for suppression of unrequired variation components called projection matrix method. We have presented experimental results of small displacement detection to confirm the validity of the method.
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Zhang et al. (2013) studied this question. FMCW radar with projection matrix method was evaluated on Small displacement detection of vital signal. A new signal processing method called the projection matrix method was proposed and experimentally validated for extracting heart rate signals from respiratory variation using FMCW radar.
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