2013/10/08 by Somayeh Kazemi, Kazemi, Somayeh, Ayaz Ghorbani +5
Engineering · Medicine · #ECG Monitoring and Analysis #FOS: Biological sciences #FOS: Physical sciences #Hemodynamic Monitoring and Therapy #Medical Physics (physics.med-ph) #Non-Invasive Vital Sign Monitoring #Quantitative Methods (q-bio.QM)
paper · pdf · doi:10.48550/arxiv.1310.2293
openalex publication_date 2013/10/08 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
Heart and respiration rate measurement using Doppler radar is a non-contact and non-obstructive way for remote thorough-clothing monitoring of vital signs. The modulated back-scattered radar signal in the presence of high noise and interference is non-stationary with hidden periodicities, which cannot be detected by ordinary Fourier analysis. In this paper we propose a cyclostationary approach for such signals and show that by using non-linear transformation and then Fourier analysis of the radar signal, the hidden periodicities can be accurately obtained. Numerical results show that the vital signs can be extracted as cyclic frequencies, independent of SNR and without any filtering or phase unwrapping.