An Improved Algorithm for Through-Wall Target Detection Using Ultra-Wideband Impulse Radar

Date

2017

Authors

Liang, Xiaolin
Zhang, Hao
Fang, Guangyou
Ye, Shengbo
Gulliver, T. Aaron

Journal Title

Journal ISSN

Volume Title

Publisher

IEEE Access

Abstract

This paper considers the detection and localization of a human subject in complex environments using an ultra-wideband impulse radar. The subject is remotely sensed by extracting micro-motion information, such as the respiration and heartbeat frequencies. It is challenging to extract this information due to the low signal to noise and clutter ratio in typical disaster environments. To improve the localization accuracy, a new method is proposed using the characteristics of vital sign signals. The range is determined using a short-time Fourier transform of the kurtosis and standard deviation of the received signals. Furthermore, an improved arctangent demodulation technique is used to determine the frequency of human micro-motion based on a multiple frequency accumulation method. Performance results are presented, which show that the proposed method is superior to several well-known techniques.

Description

Keywords

human micro-motion ultra-wideband (UWB) impulse radar, short-time Fourier transform (STFT), kurtosis, frequency accumulation (FA), arctangent demodulation (AD)

Citation

Liang, X.; Zhang, H.; Fang, G.; Ye, S.; & Gulliver. T. A. (2017). An improved algorithm for through-wall target detection using ultra-wideband impulse radar. IEEE Access, 5, 22101-22118. https://doi.org/10.1109/ACCESS.2017.2761771