Radar Based Heartbeat Estimation in Time Domain

Non-contact methods for monitoring vital signs, like the heartbeat, offer convenience and hygiene benefits but face challenges in achieving accurate and reliable results. In this paper, we propose a novel approach for estimating heartbeat peaks in radar signals using a cross-correlation method based on a template function. By applying this correlative method to phase-extracted radar signals recorded from breathing individuals, cardiac information is isolated and heartbeat peaks are identified over time. Experiments using a 24 GHz FMCW radar system have been conducted, comparing the results with synchronized ECG data. Our approach not only demonstrates the effectiveness of non-contact cardiac monitoring but also showcases its potential for providing valuable insights into improved vital signs monitoring. This work showcases the potential of radar technology for real-time vital sign monitoring and healthcare applications.