基于双曲线模型的生物雷达二维定位算法  

Two Dimensional Localization Algorithm of Bio-Radar Based on Hyperbolic Model

作　　者：张自启[1] 张杨[1] 祁富贵 刘淼[1] 王鹏飞[1] 殷悦 史刚 王健琪[1] ZHANG Ziqi;ZHANG Yang;Qi Fugui;LIU Miao;WANG Pengfei;YIN Yue;SHI Gang;WANG Jianqi(School of Biomedical Engineering, The Fourth Military Medical University, Xi’an Shaanxi 710032, China)

机构地区：[1]第四军医大学生物医学工程学院,陕西西安710032

出　　处：《中国医疗设备》2017年第12期25-29,43,共6页China Medical Devices

基　　金：国家自然科学基金(61327805);第四军医大学人才资助项目(4139Z3B8DA)

摘　　要：目前多通道生物雷达目标二维定位多采用多条圆弧相交的算法,该算法容易因单通道定位不准而造成圆弧无法相交于一点的情况。本文提出了在一种基于双曲线模型的目标二维定位方法,该方法利用其中两个通道信息所确定的双曲线并结合另一个通道信息所确定的圆弧对目标进行二维定位。自由空间实验和穿墙实验结果表明,该定位方法能在直角坐标系下较准确地确定目标的二维坐标,二维坐标与目标实际位置之间的平均误差在10 cm左右,从而验证了该实验方法的正确性和有效性。该算法计算简便,结果可靠,可以为实际搜救工作提供有效的指导。At present,most targets detection algorithms in two dimensions is multi-channels bio-radar chose to locate targets by finding the intersection of some arcs,these algorithms may not intersecting those arcs into one point because of the inaccuracies from one of the channels.This paper presented a two-dimensional target localization algorithms based on hyperbolic model,it combined the hyperbolic determined by two of the channels and the arc determined by another channel to realize the two-dimensional localization of the target.The results of the free space and through wall experiment indicated the method could accurately determine the two-dimensional coordinates of the target in Cartesian coordinates,the average error between the two-dimensional coordinates and the actual position of the target was about10cm,which verified the correctness and validity of the algorithm.The algorithm is simple and reliable,and can provide effective guidance for actual search and rescue work.

关 键 词：生物雷达 超宽带 双曲线 定位 生命探测 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]