A hybrid chaos-Doppler radar for through-wall life detection

作者：Li, Ying; Xu, Hang^*; Zhang, Jianguo; Liu, Li

来源：Journal of Electromagnetic Waves and Applications, 2018, 32(13): 1654-1663.

DOI：10.1080/09205071.2018.1464964

• Life-detection radar
• Boolean chaos
• correlation method
• micro-Doppler
• Michelson interference principle

We experimentally demonstrate a hybrid radar system that incorporates a wideband Boolean-chaos mode and a phase-based Doppler mode for human localization and life signal (respiration and heartbeat) monitoring. The measurement principle and signal-processing technology allow this radar to worksimultaneously at two different modes for different purposes. The wideband Boolean-chaos mode is responsible for accurate range detection while the phase-based Doppler mode is utilized for life signal monitoring. Experimental results show that the proposed hybrid radar can realize the simultaneous detection for range and life signal with high-range resolution, high sensitivity, and large dynamic range. The down-range resolution and dynamic range for range detection behind a 20-cm-thick wall are 15cm and 50dB, respectively. Meanwhile, the dynamic ranges for heartbeat and respiration detection are 10 and 50dB, respectively.

• 出版日期2018
• 单位太原理工大学