A novel phase-based algorithm for UWB Doppler radar improves noncontact detection of multiple heartbeats and subject localization by suppressing respiratory interference.
May enable contactless multi-subject cardiac monitoring; leaves open prospective clinical validation before practice adoption.
In this letter, a phase-based algorithm based on a logarithmic method, applicable to UWB radars and suitable to real-time monitoring, is proposed to detect the phase variations of reflected pulses caused by the tiny cardiac motions. Compared with conventional FFT vital signs detection method, this algorithm demonstrates advantage in respiration harmonics suppression and avoidance of intermodulation between respiration and heartbeat signals. Furthermore, it is experimentally shown that UWB Doppler radar is capable of multiple heartbeats detection and subject identification/localization.
No takes yet. Share an insight, caveat, or question.
Ren et al. (2015) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: