Research on Application of Dual-Channel SFCW Bio-Radar in Detection
of Static Human Targets
ZHANG Zhuo-rana,LIANG Fu-laib, LI Hao-nanc, LV Haob, QI Fu-guib, AN Qiangb,WANG Jian-qib
a. Company 16, Battalion 4, No. 1 Cadet
Brigade; b. Teaching and Research Section of
Medical Electronics, School of Biomedical
Engineering;
c. Company 5, Battalion 2, No.
1 Cadet Brigade, the Fourth Military Medical
University, Xi’an Shaanxi 710032, China
Abstract:Bio-radar, which is aimed at detection of vital signs, is an emerging concept. The vital sign of
static human becomes weak and easily interfered by the surrounding environment due to the attenuation
of the obstacles, which makes it difficult for bio-radars to obtain the high performance in detection of
static human body. Dual-channel SFCW (Stepped-Frequency Continuous Wave) radar is used to improve
this problem in this paper. The dual-channel SFCW echo model of vital signs are established firstly,
and then the influence of the SFCW radar parameter on the detection performance is analyzed. On this
basis, a new method of static human body detection based on dual-channel SFCW radar is proposed. In
this method, preprocessing is used to suppress interference, and then dual-channel coherence is adopted
to further suppress environmental clutter. The CFAR detector, morphological filtering and clustering
are applied in detection and localization of static human. Experimental results show that the proposed
method can effectively suppress clutter and improve the detection performance.
张卓然a,梁福来b,李浩楠c,吕昊b,祁富贵b,安强b,王健琪b. 双通道SFCW生物雷达对静止人体目标探测方法的研究[J]. 中国医疗设备, 2016, 31(9): 29-33.
ZHANG Zhuo-rana,LIANG Fu-laib, LI Hao-nanc, LV Haob, QI Fu-guib, AN Qiangb,WANG Jian-qib. Research on Application of Dual-Channel SFCW Bio-Radar in Detection
of Static Human Targets. China Medical Devices, 2016, 31(9): 29-33.