A Novel Rotary FMCW Radar for Omnidirectional Multiperson Localization and Vital Signs Detection

Omnidirectional multiperson localization and simultaneous vital signs detection are challenges for the single radar system. A novel rotary radar based on frequency-modulated continuous-wave (FMCW) modulation is proposed to achieve omnidirectional exploration. The model of this radar is brought out t...

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Published inIEEE transactions on microwave theory and techniques Vol. 72; no. 3; pp. 1886 - 1899
Main Authors Wang, Zibin, Li, Chengguang, Tu, Silong, Liu, Zhenyu
Format Journal Article
LanguageEnglish
Published New York IEEE 01.03.2024
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Continuous radiation
Continuous wavelet transforms
Detection algorithms
Frequency modulation
Frequency-modulated continuous wave (FMCW)
Localization
Location awareness
Monitoring
omnidirectional
Omnidirectional antennas
Performance enhancement
Radar antennas
Radar detection
Radar equipment
rotary
Signal detection
Signal to noise ratio
Torso
vital signs detection
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Abstract Omnidirectional multiperson localization and simultaneous vital signs detection are challenges for the single radar system. A novel rotary radar based on frequency-modulated continuous-wave (FMCW) modulation is proposed to achieve omnidirectional exploration. The model of this radar is brought out to simultaneously locate multiple persons and detect their vital signs in all directions. However, the human torso width that will cross some fan-shaped recognition areas of the radar brings difficulties for precise localization. In addition, because the intensity of vital signs contributed by different torso parts is diverse, the detection performance of the respiration rate (RR) and heartbeat rate (HR) are affected. To this end, an energy aggregation analysis (EAA) is proposed to select sector and range-bin for human localization. Moreover, a multicell correlation fusion (MCF) method is presented to improve the performance of RR and HR, by merging the reflected intensity of different torso parts. Experimental results have shown the feasibility and practicability of the proposed methods. EAA is proven to enhance the ability of multiperson localization, and MCF is verified to improve the SNR of RR and HR. Furthermore, the multiperson experiment shows that the locations and vital signs of multiple subjects in different directions can be obtained simultaneously.
AbstractList Omnidirectional multiperson localization and simultaneous vital signs detection are challenges for the single radar system. A novel rotary radar based on frequency-modulated continuous-wave (FMCW) modulation is proposed to achieve omnidirectional exploration. The model of this radar is brought out to simultaneously locate multiple persons and detect their vital signs in all directions. However, the human torso width that will cross some fan-shaped recognition areas of the radar brings difficulties for precise localization. In addition, because the intensity of vital signs contributed by different torso parts is diverse, the detection performance of the respiration rate (RR) and heartbeat rate (HR) are affected. To this end, an energy aggregation analysis (EAA) is proposed to select sector and range-bin for human localization. Moreover, a multicell correlation fusion (MCF) method is presented to improve the performance of RR and HR, by merging the reflected intensity of different torso parts. Experimental results have shown the feasibility and practicability of the proposed methods. EAA is proven to enhance the ability of multiperson localization, and MCF is verified to improve the SNR of RR and HR. Furthermore, the multiperson experiment shows that the locations and vital signs of multiple subjects in different directions can be obtained simultaneously.
Author Tu, Silong
Wang, Zibin
Liu, Zhenyu
Li, Chengguang
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Snippet Omnidirectional multiperson localization and simultaneous vital signs detection are challenges for the single radar system. A novel rotary radar based on...
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SubjectTerms Continuous radiation
Continuous wavelet transforms
Detection algorithms
Frequency modulation
Frequency-modulated continuous wave (FMCW)
Localization
Location awareness
Monitoring
omnidirectional
Omnidirectional antennas
Performance enhancement
Radar antennas
Radar detection
Radar equipment
rotary
Signal detection
Signal to noise ratio
Torso
vital signs detection
Title A Novel Rotary FMCW Radar for Omnidirectional Multiperson Localization and Vital Signs Detection
URI https://ieeexplore.ieee.org/document/10229978
https://www.proquest.com/docview/2938005778
Volume 72
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