On Models and Approaches for Human Vital Signs Extraction from Short Range Radar Signals
arxiv(2024)
摘要
The paper centres on an assessment of the modelling approaches for the
processing of signals in CW and FMCW radar-based systems for the detection of
vital signs. It is shown that the use of the widely adopted phase extraction
method, which relies on the approximation of the target as a single point
scatterer, has limitations in respect of the simultaneous estimation of both
respiratory and heart rates. A method based on a velocity spectrum is proposed
as an alternative with the ability to treat a wider range of application
scenarios.
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