Contactless sensing of physiological signals using wideband RF probes

Contactless sensing of physiological signals using wideband RF probes
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使用宽带射频探头非接触式传感生理信号

DOI:
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发表时间:
2013
期刊:
Asilomar Conference on Signals, Systems and Computers
影响因子:
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通讯作者:
M. al’Absi
M. al’Absi
中科院分区:
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文献类型:
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作者:
Ju Gao;Emre Ertin;Santosh Kumar;M. al’Absi

文献摘要

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在本文中,我们提出了一种新的原型超宽带(UWB)射频(RF)传感器和相关的信号恢复算法,用于感测心脏和肺的运动,而不需要与皮肤接触。我们提出的问题,从UWB RF后向散射测量恢复反射率剖面的身体作为一个盲目的反卷积问题,并提出了一个迭代算法的解决方案。我们还提出了基于子空间的检测器,用于在这种新的成像模式中检测心跳。
In this paper, we present a new prototype ultrawideband (UWB) radio frequency (RF) sensor and associated signal recovery algorithms for sensing of heart and lung motion without requiring contact with the skin. We pose the problem of recovering reflectivity profile of the body from UWB RF backscatter measurements as a blind deconvolution problem, and present an iterative algorithm for its solution. We also present subspace based detectors for detecting heart beats in this new imaging modality.