Selecting Target Range with Accurate Vital Sign Using Spatial Phase Coherency of FMCW Radar
Respiration and heartbeat are basic indicators of the physiological state of human beings. Frequency-modulated continuous wave (FMCW) radar can sense micro-displacement in the human body surface without contact, and is used for vital-sign (respiration and heartbeat) monitoring. For the extraction of...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-05-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/11/10/4514 |
| _version_ | 1797533952758513664 |
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| author | Ho-Ik Choi Woo-Jin Song Heemang Song Hyun-Chool Shin |
| author_facet | Ho-Ik Choi Woo-Jin Song Heemang Song Hyun-Chool Shin |
| author_sort | Ho-Ik Choi |
| collection | DOAJ |
| description | Respiration and heartbeat are basic indicators of the physiological state of human beings. Frequency-modulated continuous wave (FMCW) radar can sense micro-displacement in the human body surface without contact, and is used for vital-sign (respiration and heartbeat) monitoring. For the extraction of vital-sign, it is essential to select the target range containing vital-sign information. In this paper, we exploit the coherency of phase in different range-bins of FMCW radar to effectively select the range-bins that contain accurate signals for remote monitoring of human respiration and heartbeat. To quantify coherency, the spatial phase coherency (SPC) index is introduced. The experimental results show that the SPC can select a range-bin containing more accurate vital-sign signals than conventional methods. This result demonstrates that the proposed method is accurate for monitoring of vital signs by using FMCW radar. |
| first_indexed | 2024-03-10T11:22:58Z |
| format | Article |
| id | doaj.art-742bd0b89f394a8f9962a3faff33ea28 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T11:22:58Z |
| publishDate | 2021-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-742bd0b89f394a8f9962a3faff33ea282023-11-21T19:53:48ZengMDPI AGApplied Sciences2076-34172021-05-011110451410.3390/app11104514Selecting Target Range with Accurate Vital Sign Using Spatial Phase Coherency of FMCW RadarHo-Ik Choi0Woo-Jin Song1Heemang Song2Hyun-Chool Shin3Department of Electrical Engineering, Pohang University of Science and Technology, Pohang 37673, KoreaDepartment of Electrical Engineering, Pohang University of Science and Technology, Pohang 37673, KoreaDepartment of Electronic Engineering, Soongsil University, Seoul 06978, KoreaDepartment of Software Convergence, Soongsil University, Seoul 06978, KoreaRespiration and heartbeat are basic indicators of the physiological state of human beings. Frequency-modulated continuous wave (FMCW) radar can sense micro-displacement in the human body surface without contact, and is used for vital-sign (respiration and heartbeat) monitoring. For the extraction of vital-sign, it is essential to select the target range containing vital-sign information. In this paper, we exploit the coherency of phase in different range-bins of FMCW radar to effectively select the range-bins that contain accurate signals for remote monitoring of human respiration and heartbeat. To quantify coherency, the spatial phase coherency (SPC) index is introduced. The experimental results show that the SPC can select a range-bin containing more accurate vital-sign signals than conventional methods. This result demonstrates that the proposed method is accurate for monitoring of vital signs by using FMCW radar.https://www.mdpi.com/2076-3417/11/10/4514FMCW radarrespirationheartbeatrange selectionspatial phase coherency |
| spellingShingle | Ho-Ik Choi Woo-Jin Song Heemang Song Hyun-Chool Shin Selecting Target Range with Accurate Vital Sign Using Spatial Phase Coherency of FMCW Radar Applied Sciences FMCW radar respiration heartbeat range selection spatial phase coherency |
| title | Selecting Target Range with Accurate Vital Sign Using Spatial Phase Coherency of FMCW Radar |
| title_full | Selecting Target Range with Accurate Vital Sign Using Spatial Phase Coherency of FMCW Radar |
| title_fullStr | Selecting Target Range with Accurate Vital Sign Using Spatial Phase Coherency of FMCW Radar |
| title_full_unstemmed | Selecting Target Range with Accurate Vital Sign Using Spatial Phase Coherency of FMCW Radar |
| title_short | Selecting Target Range with Accurate Vital Sign Using Spatial Phase Coherency of FMCW Radar |
| title_sort | selecting target range with accurate vital sign using spatial phase coherency of fmcw radar |
| topic | FMCW radar respiration heartbeat range selection spatial phase coherency |
| url | https://www.mdpi.com/2076-3417/11/10/4514 |
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