Through-Wall Detection of Human Being's Movement by UWB Radar
Through-Wall Detection of Human Being's Movement by UWB Radar
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DOI：
10.1109/lgrs.2012.2190707
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发表时间：
2012-11-01
影响因子：
4.8
通讯作者：
Liu, Fengshan
中科院分区：
文献类型：
--
作者：
Li, Jing;Zeng, Zhaofa;Liu, Fengshan
超宽带（UWB）雷达技术由于其高的距离分辨率和良好的穿透性而成为穿墙探测的首选技术之一。该分辨率是UWB雷达高带宽的结果，有助于在复杂环境下更好地分离多目标。通过墙壁检测人体目标在许多应用中是令人感兴趣的。人体的一个重要特征是周期性运动，如呼吸和肢体运动。本文将超宽带雷达系统应用于穿墙人体检测，提出了基于快速傅里叶变换和S变换的人体生命特征检测与识别方法。特别是，我们可以提取的中心频率的生命信号和定位人体目标的位置，从实验数据具有较高的精度。与其他穿墙探测研究相比，本文主要研究强杂波背景下生命信号的处理与识别。该方法具有较高的信噪比，在复杂环境检测中易于实现。利用该方法可以在地震、爆炸、火灾等灾害中对被困在建筑物废墟下的幸存者进行搜索和定位。
Ultrawideband (UWB) radar technology has emerged as one of the preferred choices for through-wall detection due to its high range resolution and good penetration. The resolution is a result of high bandwidth of UWB radar and helpful for better separation of multiple targets in complex environment. Detection of human targets through a wall is interesting in many applications. One significant characteristic of human is the periodic motion, such as breathing and limb movement. In this letter, we apply the UWB radar system in through-wall human detection and present the methods based on fast Fourier transform and S transform to detect and identify the human's life characteristic. In particular, we can extract the center frequencies of life signals and locate the position of human targets from experimental data with high accuracy. Compared with other research studies in through-wall detection, this letter is concentrated in the processing and identifying of the life signal under strong clutter. It has a high signal-to-noise ratio and simpler to implement in complex environment detection. We can use the method to search and locate the survivor trapped under the building debris during earthquake, explosion, or fire.