Research on vital sign information extraction and localization algorithm based on WA-EMD ultra-wideband radar

In order to effectively identify the respiration and heartbeat information from the radar echo signal, reduce the positioning error, and improve the detection accuracy of the ultra-wideband radar life detector. The WA-EMD denoising and reconstruction algorithm is proposed, and the peak-to-peak value, variance, standard deviation and distance error of the PE method are compared and analyzed. The results show that the WA-EMD algorithm can effectively separate the respiration and heartbeat from the preprocessed signal. The detection target error of the PE method is determined to be less than 5%, which verifies the feasibility of the detection distance of the PE algorithm.