A Novel Wireless-Netted UWB Life-Detection Radar System for Quasi-Static Person Sensing

In actual life-detection radar applications, a quasi-static person with weak respiration is difficult to find when relying on the echoes from a single fixed observation point. To effectively sense the weak respiration of a quasi-static person in complex through-wall and through-floor conditions, thi...

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Bibliographic Details
Published in:Applied sciences 2021-01, Vol.11 (1), p.424
Main Authors: Yan, Kun, Wu, Shiyou, Ye, Shengbo, Fang, Guangyou
Format: Article
Language:English
Subjects:
Antennas
Construction materials
Design
Efficiency
Field programmable gate arrays
Floors
Golay complementary code
life detection radar
multi-observation point system
Noise
Radar
Radar detection
Radar equipment
Radar systems
Radiation
Receivers & amplifiers
Reinforced concrete
Respiration
Signal to noise ratio
Synchronism
Synchronization
through-the-wall radar
Transmitters
Ultrawideband
Ultrawideband radar
Wireless communications
Wireless networks
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Summary:In actual life-detection radar applications, a quasi-static person with weak respiration is difficult to find when relying on the echoes from a single fixed observation point. To effectively sense the weak respiration of a quasi-static person in complex through-wall and through-floor conditions, this paper proposes a novel multi-observation point detection system composed of multiple Golay complementary coded radars in which communication and synchronization are carried out wirelessly. The collaboration structure and Golay complementary coded transmitter improve the signal to noise ratio (SNR). Proof-of-principle experiments are carried out with our designed radar prototype and prove that the radar system can detect a respiring target 21 m behind a brick wall or a respiring target behind two levels of reinforced concrete floors, validating the effectiveness of a multi-observation point working mode for the efficient detection of weak human respiration.
ISSN:2076-3417
2076-3417
DOI:10.3390/app11010424