Chaos Through-Wall Imaging Radar
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- 作者：Hang Xu ; Bingjie Wang ; Jianguo Zhang ; Li Liu ; Ying Li ; Yuncai Wang…
- 关键词：Ultra ; wideband (UWB) radar ; Through ; wall imaging ; Chaotic ; pulse ; position modulation (CPPM) ; Correlation method ; Back projection algorithm ; Finite ; difference time ; domain (FDTD)
- 刊名：Sensing and Imaging
- 出版年：2017
- 出版时间：December 2017
- 年：2017
- 卷：18
- 期：1
- 全文大小：
- 刊物类别：Engineering
- 刊物主题：Electrical Engineering; Microwaves, RF and Optical Engineering; Imaging / Radiology;
- 出版者：Springer US
- ISSN：1557-2072
- 卷排序：18
文摘
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.