基于SFCW雷达的多场景墙体参数反演  

Wall parameters inversion in multi-scenes based on SFCW radar

作　　者：葛薇[1] 张照[1] 彭正辉[1] 王春和[1] 

机构地区：[1]中国电波传播研究所,青岛266107

出　　处：《电子测量技术》2017年第5期32-36,共5页Electronic Measurement Technology

基　　金：国家自然科学基金(61327805)资助项目

摘　　要：穿墙探测所处的外界环境内通常存在多种散射体,是否存在金属物品、有无人体对墙体参数反演具有不同的影响,进而影响穿墙定位与成像的准确性。将不同的外界环境分为不同场景,根据电磁波传播理论和菲涅尔公式建立电磁波穿墙传播模型,并详细阐述了用于提高步进扫频连续波(stepped frequency continuous wave,SFCW)穿墙雷达分辨率的Extend Prony算法和墙体参数快速反演算法,得出一种反演墙体介电常数和厚度的方法,并在墙后无散射体场景、墙后存在金属物体场景和墙后存在人体场景多场景中进行实验,最后将真实值与实验结果对比,表明在不同场景中具有较强适应性,反演出的墙体参数是现场穿墙探测的重要参考依据。Through Wall detection is usually in the external environment with many scatterers. Whether metal objects or people exist or not has different effects on wall parameters inversion, and further affects the accuracy of locating and imaging through the wall. Different external environment is simplified different scenes. A model of electromagnetic wave propagation through the wall is built according to the theory of electromagnetic wave propagation and the Fresnel equations, and the theory and procedure of extend prony method for enhancement resolution in a SFCW through wall radar and wall parameters inversion fast algorithm are described. A method of wall permittivity and thickness inversion is presented, and the experiment is performed in multi-scenes. At last, the results of the experiments are contrasted with the true value. It is concluded that the method is highly adaptable in different scenes, and the wall parameters calculated are valuable references of through wall detection in reality.

关 键 词：多场景 步进扫频连续波雷达 墙体参数反演 EXTEND PRONY 

分 类 号：TN959.1[电子电信—信号与信息处理]