Respiration Rate Extraction of Moving Subject Using Velocity Change in FMCW Radar

We propose a novel approach to determine the respiration rate of a moving subject, in terms of the velocity change, by using a frequency-modulated continuous-wave radar. In conventional methods, the respiration rate is determined by considering the variation in the distance between the targets and r...

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Bibliographic Details
Published inApplied sciences Vol. 12; no. 9; p. 4114
Main Authors Lee, Jin-Mo, Song, Heemang, Shin, Hyun-Chool
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.05.2022
Subjects
Continuous wave radar
COVID-19
Doppler velocity
Experiments
FMCW radar
Frequency dependence
Radar
random body movement
Research methodology
Research methods
Respiration
Sensors
Signal processing
Velocity
vital monitoring
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Summary:We propose a novel approach to determine the respiration rate of a moving subject, in terms of the velocity change, by using a frequency-modulated continuous-wave radar. In conventional methods, the respiration rate is determined by considering the variation in the distance between the targets and radar; however, these methods are vulnerable to the subject’s movements. The proposed approach estimates the respiration rate by considering the velocity, instead of the distance. An experiment was conducted to measure respiration in several subjects performing various movements. The experimental results demonstrate that the proposed method is more robust to the subject’s movements compared to conventional research methods, and can more accurately estimate the respiration rate.
ISSN:2076-3417
2076-3417
DOI:10.3390/app12094114