Application of Linear-Frequency-Modulated Continuous-Wave (LFMCW) Radars for Tracking of Vital Signs

This paper focuses on the exploitation of linear-frequency-modulated continuous-wave (LFMCW) radars for noncontact range tracking of vital signs, e.g., respiration. Such short-range system combines hardware simplicity and tracking precision, thus outperforming other remote-sensing approaches in the...

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Veröffentlicht in:	IEEE transactions on microwave theory and techniques Jg. 62; H. 6; S. 1387 - 1399
Hauptverfasser:	Wang, Guochao, Munoz-Ferreras, Jose-Maria, Gu, Changzhan, Li, Changzhi, Gomez-Garcia, Roberto
Format:	Journal Article
Sprache:	Englisch
Veröffentlicht:	New York, NY IEEE 01.06.2014 Institute of Electrical and Electronics Engineers The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Schlagworte:	Algorithms Applied sciences Architecture Biomedical applications Clutter Computer simulation Doppler radar Exact sciences and technology Exploitation History linear-frequency-modulated continuous-wave (LFMCW) radars Maintenance Mathematical analysis Monitoring Radar Radar tracking Radiolocalization and radionavigation range tracking short-range radars Telecommunications Telecommunications and information theory Tracking vital signs wireless sensors Parameter estimation Frequency modulation Prototype Wireless telecommunication Clutter Implementation Remote sensing Mathematical analysis linear-frequency-modulated continuous-wave (LFMCW) radars Robustness Monitoring Biomedical engineering Target tracking vital signs Biomedical applications CW radar Multiple scattering short-range radars Algorithm wireless sensors Simulation Phase estimation Coherence range tracking Biomedical electronics Non contact measurement Short range radar
ISSN:	0018-9480, 1557-9670
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Abstract	This paper focuses on the exploitation of linear-frequency-modulated continuous-wave (LFMCW) radars for noncontact range tracking of vital signs, e.g., respiration. Such short-range system combines hardware simplicity and tracking precision, thus outperforming other remote-sensing approaches in the addressed biomedical scenario. A rigorous mathematical analysis of the operating principle of the LFMCW radar in the context of vital-sign monitoring, which includes the explanation of key aspects for the maintenance of coherence, is detailed. A precise phase-based range-tracking algorithm is also presented. Exhaustive simulations are carried out to confirm the suitability and robustness against clutter, noise, and multiple scatterers of the proposed radar architecture, which is subsequently implemented at the prototype level. Moreover, live data from real experiments associated to a metal plate and breathing subjects are obtained and studied.
AbstractList	This paper focuses on the exploitation of linear-frequency-modulated continuous-wave (LFMCW) radars for noncontact range tracking of vital signs, e.g., respiration. Such short-range system combines hardware simplicity and tracking precision, thus outperforming other remote-sensing approaches in the addressed biomedical scenario. A rigorous mathematical analysis of the operating principle of the LFMCW radar in the context of vital-sign monitoring, which includes the explanation of key aspects for the maintenance of coherence, is detailed. A precise phase-based range-tracking algorithm is also presented. Exhaustive simulations are carried out to confirm the suitability and robustness against clutter, noise, and multiple scatterers of the proposed radar architecture, which is subsequently implemented at the prototype level. Moreover, live data from real experiments associated to a metal plate and breathing subjects are obtained and studied.
Author	Munoz-Ferreras, Jose-Maria Guochao Wang Gomez-Garcia, Roberto Changzhan Gu Changzhi Li
Author_xml	– sequence: 1 givenname: Guochao surname: Wang fullname: Wang, Guochao – sequence: 2 givenname: Jose-Maria surname: Munoz-Ferreras fullname: Munoz-Ferreras, Jose-Maria – sequence: 3 givenname: Changzhan surname: Gu fullname: Gu, Changzhan – sequence: 4 givenname: Changzhi surname: Li fullname: Li, Changzhi – sequence: 5 givenname: Roberto surname: Gomez-Garcia fullname: Gomez-Garcia, Roberto
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Keywords	Parameter estimation Frequency modulation Prototype Wireless telecommunication Clutter Implementation Remote sensing Mathematical analysis linear-frequency-modulated continuous-wave (LFMCW) radars Robustness Monitoring Biomedical engineering Target tracking vital signs Biomedical applications CW radar Multiple scattering short-range radars Algorithm wireless sensors Simulation Phase estimation Coherence range tracking Biomedical electronics Non contact measurement Short range radar
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SubjectTerms	Algorithms Applied sciences Architecture Biomedical applications Clutter Computer simulation Doppler radar Exact sciences and technology Exploitation History linear-frequency-modulated continuous-wave (LFMCW) radars Maintenance Mathematical analysis Monitoring Radar Radar tracking Radiolocalization and radionavigation range tracking short-range radars Telecommunications Telecommunications and information theory Tracking vital signs wireless sensors
Title	Application of Linear-Frequency-Modulated Continuous-Wave (LFMCW) Radars for Tracking of Vital Signs
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