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Through-Wall Bio-Radiolocation With UWB Impulse Radar: Observation, Simulation and Signal Extraction

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3 Author(s)
Lanbo Liu ; Dept. of Civil & Environ. Eng., Univ. of Connecticut, Storrs, CT, USA ; Zijian Liu ; Barrowes, B.E.

In this paper the cardio-respiratory signatures of human beings were studied using both an ultra-wide band (UWB) impulse radar system in a laboratory through-wall experiment and a numerical simulation using the finite difference time domain (FDTD) method. Signals from both the physical experiment and numerical simulation are processed with the Hilbert-Huang Transform (HHT), a novel signal processing approach for nonlinear and non-stationary data analysis. The results show that by using the HHT, human respiration characteristics can be successfully identified and differentiated for different subjects and a variety of respiratory statuses. However, reliable detection of cardiologic signatures requires a radar system with higher central frequency. Our results demonstrate that this combination of UWB impulse radar and HHT data processing has potential for through-wall life detection and possibly other applications.

Published in:

Selected Topics in Applied Earth Observations and Remote Sensing, IEEE Journal of  (Volume:4 ,  Issue: 4 )

Date of Publication:

Dec. 2011

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