Differential approach for Through-the-wall life signs detection

A very simple and effective method for detecting life signs for Through-the-wall Imaging applications is proposed and tested on experimental data. The proposed method properly exploits a Continuous Wave Microwave Transceiver working at 10 GHz and takes advantage from the displacement of the chest due to the respiratory movement for deriving a simple differential approach for detecting the respiratory and the heartbeat activities from the measured electromagnetic field. The proposed strategy allows to detect life signs of people in furnished room under concrete walls. The measurement set-up and the applied signal processing strategies are presented

[1]  I. Arai.  Survivor search radar system for persons trapped under earthquake rubble , 2001, APMC 2001. 2001 Asia-Pacific Microwave Conference (Cat. No.01TH8577).

[2]  Giovanni Leone,et al.  A Simple Strategy for Life Signs Detection via an X-Band Experimental Set-Up , 2009 .

[3]  J. Lin,et al.  Experiment and Spectral Analysis of a Low-Power $Ka$-Band Heartbeat Detector Measuring From Four Sides of a Human Body , 2006, IEEE Transactions on Microwave Theory and Techniques.

[4]  J.C. Lin.  Noninvasive microwave measurement of respiration , 1975, Proceedings of the IEEE.

[5]  Jenshan Lin,et al.  A Ka-Band Low Power Doppler Radar System for Remote Detection of Cardiopulmonary Motion , 2005, 2005 IEEE Engineering in Medicine and Biology 27th Annual Conference.

[6]  Carlo Atzeni,et al.  Non-Contact Detection of Breathing Using a Microwave Sensor , 2009, Sensors.

[7]  J. Van Bladel,et al.  Reflections from linearly vibrating objects: plane mirror at oblique incidence , 1981 .

[8]  Jenshan Lin,et al.  Range correlation and I/Q performance benefits in single-chip silicon Doppler radars for noncontact cardiopulmonary monitoring , 2004, IEEE Transactions on Microwave Theory and Techniques.

[9]  Changzhi Li,et al.  A Portable Noncontact Heartbeat and Respiration Monitoring System Using 5-GHz Radar , 2007, IEEE Sensors Journal.

[10]  Jingzhou Luo,et al.  A Viewpoint of Time Variant Dielectric Effect in Vital Sign Detection Using Microwave Radar , 2009 .

[11]  Carlo Atzeni,et al.  Detection of Breathing and Heartbeat Through Snow Using a Microwave Transceiver , 2008, IEEE Geoscience and Remote Sensing Letters.