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Through-Wall Detection of Human Being's Movement by UWB Radar

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4 Author(s)
Jing Li ; Coll. of Geo-Exploration Sci. & Technol, Jilin Univ., Changchun, China ; Zhaofa Zeng ; Jiguang Sun ; Fengshan Liu

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.

Published in:

IEEE Geoscience and Remote Sensing Letters  (Volume:9 ,  Issue: 6 )