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Chaos Through-Wall Imaging Radar.

Authors :
Xu, Hang
Wang, Bingjie
Zhang, Jianguo
Liu, Li
Li, Ying
Wang, Yuncai
Wang, Anbang
Source :
Sensing & Imaging; 11/23/2017, Vol. 18 Issue 1, p1-14, 14p
Publication Year :
2017

Abstract

We experimentally demonstrate a chaos through-wall imaging radar using ultra-wideband chaotic-pulse-position modulation (CPPM) microwave signal. The CPPM signal based on logistic map with 1-ns pulse width and 1-GHz bandwidth is implemented by a field programmable gate array (FPGA) and then up-converted as the radar transmitting signal. Two-dimensional image of human objects behind obstacles is obtained by correlation method and back projection algorithm. Our experiments successfully perform through-wall imaging for single and multiple human objects through 20-cm thick wall. The down-range resolution of the proposed radar is 15 cm. Furthermore, the anti-jamming properties of the proposed radar in CPPM jamming, linear frequency-modulated jamming, and Gaussian noise jamming environments are demonstrated by electromagnetic simulations using the finite-difference time-domain. The simulation results show the CPPM microwave signal possesses excellent jamming immunity to the noise and radio frequency interference, which makes it perform superbly in multiradar environments. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
15572064
Volume :
18
Issue :
1
Database :
Complementary Index
Journal :
Sensing & Imaging
Publication Type :
Academic Journal
Accession number :
126405729
Full Text :
https://doi.org/10.1007/s11220-017-0156-9