Remote heart-rate estimation based on phase accumulation-linear interpolation method for mm-wave FMCW radar

Abstract

Vital signs measurement with phase analysis for mm-wave FMCW radar contains various kinds of noise. In this research, a phase accumulation-linear interpolation (PA-LI) method for mm-wave FMCW radar is proposed, which can quickly and efficiently reduce phase noise and improve the SNR of the radar vital sign before EMD/EEMD processing. Experimental results show that the proposed method can accurately extract the heartbeat signal with high SNR and the HR estimation is more accurate.