Heartbeat Estimation and Respiratory Arrhythmia Detection Using 24 GHz Radar Signals

In this paper, we propose a novel non-contact method for monitoring vital signs, with a focus on heartbeat estimation using radar signals. Our approach utilizes a cross-correlation method based on a template function to isolate cardiac information from phase-extracted radar signals recorded during breathing. By accurately identifying heartbeat peaks over time, our method demonstrates the potential of radar technology for real-time vital sign monitoring in healthcare applications. Experiments conducted with a 24 GHz FMCW radar system, compared with synchronized ECG data, highlight the efficiency of our approach. Beyond showcasing non-contact cardiac monitoring, our method also sheds light on respiratory arrhythmia, providing valuable insights into the complex dynamics of cardiac and respiratory patterns.