Remote sensing of heart rate and patterns of respiration on a stationary subject using 94-GHz millimeter-wave interferometry

Ilya V. Mikhelson, Sasan Bakhtiari, Thomas W. Elmer, Alan V. Sahakian

Research output: Contribution to journalArticle

78 Scopus citations

Abstract

Using continuous wave, 94-GHz millimeter-wave interferometry, a signal representing chest wall motion can be obtained that contains both the heart rate and respiration patterns of a human subject. These components have to be separated from each other in the received signal. Our method was to use the quadrature and in-phase components of the signal, after removing the mean of each, to find the phase, unwrap it, and convert it to a displacement measurement. Using this, the power spectrum was examined for peaks, which corresponded to the heart rate and respiration rate. The displacement waveform of the chest was also analyzed for discrete heartbeats using a novel wavelet decomposition technique.

Original languageEnglish (US)
Article number5709976
Pages (from-to)1671-1677
Number of pages7
JournalIEEE Transactions on Biomedical Engineering
Volume58
Issue number6
DOIs
StatePublished - Jun 1 2011

Keywords

  • Cardiography
  • heart rate
  • millimeter wave
  • noncontact
  • respiration

ASJC Scopus subject areas

  • Biomedical Engineering

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