基于VNA的穿墙雷达人体呼吸检测系统设计  

Human respiration detection system design for through-the-wall radar based on VNA

作　　者：李品用 晋良念[1] 唐茜[1] 薛宇皓 Li Pinyong;Jin Liangnian;Tang Qian;Xue Yuhao(School of Information and Communication Engineering, Guilin University of Electronic Technology, Guilin 541004, China)

机构地区：[1]桂林电子科技大学信息与通信学院

出　　处：《电子测量技术》2018年第4期11-15,共5页Electronic Measurement Technology

基　　金：国家自然科学基金(61461012);国家级大学生创新计划(201510595007);广西物联网技术及产业化推进协同创新中心项目(WLW20060204)资助

摘　　要：超宽带步进频连续波（SFCW）雷达分时发射各频率点降低了雷达收发系统的实现难度而备受关注。本文根据穿墙生命探测雷达原理样机要求,利用可编程矢量网络分析仪、标准宽带喇叭天线和PC搭建其硬件系统,然后利用系统传输函数校准测量数据得到准确的距离像,集成信号处理流程较大程度上改善信噪杂波比（SNCR）,并以Visual Studio为平台使用MFC编程技术开发系统的软件界面和应用程序实现墙后隐藏人体呼吸的在线检测。测试结果表明,该系统工作界面显示友好,参数设置灵活,性能满足实际需求。In comparison,ultra-wideband stepped frequency continuous wave（SFCW）radar transmitting each frequency point,and reducing the difficulty of radar transceiver system has attracted much attention.According to some requirements of prototype for stepped-frequency continuous wave through-the-wall life detection radar,a human respiration detection system is built using aprogrammable vector network analyzer（VNA）,two standard bandwidth horn antennas and a personal computer（PC）.The measured radar data were calibrated to get one-dimensional range profiles using system transfer functions,and the integrated signal processing methods greatly improve the signal-tonoise and clutter ratio（SCNR）. Moreover,We take Visual Studio as the platform and use MFC programming technology to develop system software interfaces and application programs.Ultimately,the online detection of hidden human respiration is realized.Experimental results show that the system working interface is friendly,system parameteres are set flexibly and the performance meets the actual requirements.

关 键 词：穿墙雷达 呼吸检测 步进频率连续波 矢量网络分析仪 MFC编程 

分 类 号：TN957.52[电子电信—信号与信息处理]