摘要
生物雷达在实际探测中,由于操作人员自身的呼吸运动而对探测系统造成一定的干扰,致使雷达的探测准确性降低。搭建了基于双天线的连续波生物雷达实验平台,提出了将基于可变步长最小均方误差准则的自适应滤波结合互相关技术的方法应用于生物雷达探测过程中的操作人员呼吸干扰抑制,并进行仿真和实际探测实验,给出了仿真结果,实际探测实验中采集的20组随机数据的干扰抑制成功率为85%,表明该方法适用于生物雷达操作人员的呼吸干扰抑制。
Respiration of operator can bring interference to bioradar and reduce the detection precision during detecting. This research constructs a CW bioradar experimental platform based on twin-antenna, and discusses the application of the method combining adaptive filtering and cross-correlation to respiration interference restraining in detection of bioradar. Simulation and detection experiment was carried out. The interference restraining rate for 20 set data is 85 percent. Experimental results suggest that the adaptive filtering algorithm can be applied to interference restraining of bioradar.
出处
《仪器仪表学报》
EI
CAS
CSCD
北大核心
2009年第4期807-811,共5页
Chinese Journal of Scientific Instrument
基金
国家自然科学基金(60571046)资助项目
关键词
生物雷达
双天线
自适应滤波
干扰抑制
bioradar
twin-antenna
adaptive filtering
interference restraining
