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Vital Sign Detection Method Based on Multiple Higher Order Cumulant for Ultrawideband Radar

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5 Author(s)
Yanyun Xu ; Key Lab. of Electromagn. Radiat. & Sensing Technol., Beijing, China ; Shun Dai ; Shiyou Wu ; Jie Chen
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The research on vital information extraction meets a lot challenges due to the narrow bandwidth and low signal-to-noise ratio of a vital sign in real environment. In this paper, a novel noncontract vital sign detection method based on multiple higher order cumulant is presented. According to the characteristic of vital sign for impulse ultrawideband radar, the quasi-periodic reflected echo in slow-time is analyzed. The novel method is theoretically deduced from fourth-order cumulant. It is proved to be better than the reference fast Fourier transform method by simulation and experiment. By using the new method, the range position and frequency information of life can be extracted accurately and automatically.

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Geoscience and Remote Sensing, IEEE Transactions on  (Volume:50 ,  Issue: 4 )