Why the study?
Doppler cardiogram technology via Doppler radar sensors requires sustained performance improvements for practical remote presentation of heart activities.
A V-band Doppler radar sensor with novel algorithms demonstrates enhanced robustness and accuracy for remote detection of Doppler cardiograms.
Capable of remote presentations of human heart activities, the Doppler cardiogram (DCG) can be detected by an agile Doppler radar sensor. However, as a recently developed technology, its performance needs sustained improvements for the future practical applications. In this work, a continuous-wave,V-band Doppler radar sensor was implemented to improve the discrimination of the receiver, for detecting micrometer-level details of heartbeat motions conducted to the chest skin. Besides, new algorithms were derived to achieve high linearity, to demodulate the Doppler phases and retrieve the fine details of DCG waveforms. Experimental measurements to different subjects showed significantly enhanced robustness and accuracy. The obtained results imply a promising potential of DCGs in wide application scenarios such as medical wisdom and personal healthcare.
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Zhu et al. (2021) studied this question.
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