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
Online-Zugang:Volltext
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Beschreibung
Zusammenfassung: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.
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ISSN:0018-9480
1557-9670
DOI:10.1109/TMTT.2014.2320464