Contactless sensing of physiological signals using wideband RF probes
Contactless sensing of physiological signals using wideband RF probes
复制标题
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:
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通讯作者:
M. al’Absi
中科院分区:
文献类型:
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作者:
Ju Gao;Emre Ertin;Santosh Kumar;M. al’Absi
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.