TY - GEN
T1 - A Spectrum-Efficient FSK Radar Solution for Stationary Human Subject Localization Based on Vital Sign Signals
AU - Wang, Jing
AU - Karp, Tanja
AU - Munoz-Ferreras, Jose Maria
AU - Gomez-Garcia, Roberto
AU - Li, Changzhi
N1 - Funding Information:
ACKNOWLEDGMENT The authors would like to acknowledge grant support from National Science Foundation (NSF) ECCS-1808613 and CNS-1718483.
Publisher Copyright:
© 2019 IEEE.
PY - 2019/6
Y1 - 2019/6
N2 - Beyond the traditional use of frequency-shift keying (FSK) radar in tracking moving targets, this work further extends its capability in localizing stationary human subject based on the phase information extracted from the detected vital sign signals. Unlike the I/Q-trajectory-based range detection method that relies on trajectory analysis and therefore is prone to the effect of DC offset and trajectory distortion, the FSK-based technique used in this paper works in spectrum domain utilizing only the motion frequency of the target with a reliable signal-to-noise ratio (SNR). A 5.8-GHz industrial, scientific, and medical (ISM) band FSK radar with a frequency difference of 15 MHz is designed and implemented. Experiments demonstrate that, besides tracking walking human subject, the proposed FSK technique can successfully recover range information of a seated human subject at different locations. A preliminary investigation of the detection robustness and consistency is presented by measuring the range of a 4-mm peak-to-peak periodic motion generated by an actuator over a 90-s observation window.
AB - Beyond the traditional use of frequency-shift keying (FSK) radar in tracking moving targets, this work further extends its capability in localizing stationary human subject based on the phase information extracted from the detected vital sign signals. Unlike the I/Q-trajectory-based range detection method that relies on trajectory analysis and therefore is prone to the effect of DC offset and trajectory distortion, the FSK-based technique used in this paper works in spectrum domain utilizing only the motion frequency of the target with a reliable signal-to-noise ratio (SNR). A 5.8-GHz industrial, scientific, and medical (ISM) band FSK radar with a frequency difference of 15 MHz is designed and implemented. Experiments demonstrate that, besides tracking walking human subject, the proposed FSK technique can successfully recover range information of a seated human subject at different locations. A preliminary investigation of the detection robustness and consistency is presented by measuring the range of a 4-mm peak-to-peak periodic motion generated by an actuator over a 90-s observation window.
KW - FSK radar
KW - Spectrum efficiency
KW - dual frequency radar
KW - noncontact biomedical sensor
KW - short-range localization
KW - stationary human subject
KW - vital signs monitoring
UR - http://www.scopus.com/inward/record.url?scp=85069976519&partnerID=8YFLogxK
U2 - 10.1109/mwsym.2019.8700837
DO - 10.1109/mwsym.2019.8700837
M3 - Conference contribution
AN - SCOPUS:85069976519
T3 - IEEE MTT-S International Microwave Symposium Digest
SP - 140
EP - 143
BT - 2019 IEEE MTT-S International Microwave Symposium, IMS 2019
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2019 IEEE MTT-S International Microwave Symposium, IMS 2019
Y2 - 2 June 2019 through 7 June 2019
ER -