ROBUST REAL-TIME HEART RATE MONITORING METHOD BASED ON HEARTBEAT HARMONICS USING SMALL-SCALE RADAR

摘要

The present disclosure relates to a heart rate monitoring method based on heartbeat harmonics. First, mixed data of a subject, which includes a fundamental respiration signal, respiration harmonics, a fundamental heartbeat signal, and heartbeat harmonics, is acquired by scanning a set of range bins. Range Doppler processing of the mixed data is performed to determine a range bin of interest. Data spectrum is then extracted based on a portion of the mixed data acquired at the range bin of interest. Next, the data spectrum is adaptively filtered to at least remove a spectrum peak of the fundamental respiration signal and a spectrum peak of the fundamental heartbeat signal mixed with a portion of respiration harmonics that are spectrally close to the fundamental heartbeat signal. Finally, the fundamental heartbeat signal is recovered based on a strongest heartbeat harmonic in the filtered data spectrum.