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针对超宽带穿墙雷达系统中准确获取穿墙雷达天线和人体目标距离的问题,基于小波分析方法检测了信号的瞬态特征,而穿墙雷达回波信号中不规则的突变和奇异点正好包含了人体运动目标信息,且突变点总有其对应的小波变换模极大值,本文提出一种基于小波模极大值的目标探测算法.通过具体的穿透混凝土砖块墙壁实测实验验证了该算法的有效性,为实现对人体目标的隔墙探测、定位和跟踪提供了保证.
Aiming at the problem of accurately obtaining the distance between the radar target and the human body in the UWB radar system, the transient characteristics of the signal are detected based on wavelet analysis. The irregular mutations and singularities in the radar echo signal of the wall just contain The information of human motion target is always got, and the mutation point always has its corresponding wavelet transform modulus maxima.This paper presents a target detection algorithm based on wavelet modulus maxima.Through the concrete experiment of penetrating concrete block wall, The validity of the algorithm provides a guarantee for the detection, localization and tracking of the barrier to the human body.