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基于混沌调频信号的超宽带穿墙SAR成像 被引量：2

Through-the-wall SAR Imaging Based on Chaotic FM Signal
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摘要 混沌调频信号具有良好的自相关特性,又类似随机信号,具有较强的抗干扰性能。该文将基于Bernoulli映射的混沌调频信号用于超宽带穿墙雷达成像,建立了信号模型,分析了混沌调频穿墙雷达系统的目标检测性能,分辨能力和抗墙壁多径干扰能力,并与线性调频雷达系统进行了比较。仿真结果表明,与线性调频信号相比,混沌调频信号用于穿墙雷达系统可获得较好的目标检测性能,更好的分辨能力,而且具有抗墙壁多径干扰能力。 Chaotic FM signal has ideal auto-correlation performance and good Electronic Counter-Counter Measure（ECCM） capabilities like random signals.In this paper,a type of chaotic FM signal generated by Bernoulli map is used for ultra-wideband through-the-wall imaging.The signal model is also built.After analyzing the detection capability,resolution capability and anti-multipath interference performance of chaotic FM radar system,it is compared with the LFM radar system.Simulation result shows that the chaotic FM signal is better than the LFM signal in target detection,resolution and anti-multipath interference when it is applied to through-the-wall radar system.
作者 谭覃燕 Henry Leung 宋耀良
机构地区 南京理工大学电子工程与光电技术学院 卡尔加里大学电子与计算机工程学院
出处 《电子与信息学报》 EI CSCD 北大核心 2011年第2期388-394,共7页 Journal of Electronics & Information Technology
基金 国家部委基金资助课题
关键词 雷达成像 超宽带 穿墙雷达 混沌调频信号 Radar imaging Ultra-wideband Through-the-wall radar Chaotic FM signal
分类号 TN958 [电子电信—信号与信息处理]
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参考文献10

  • 1Liu Xiao-xiang, Leung H, and Lamoropoulos G A. Effects of non-uniform motion in through-the-wall SAR imaging [J]. IEEE Transactions on Antennas and Propaqation, 2009, 57(11): 3539-3548.
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同被引文献21

  • 1C P Lai, R M Narayanan. Ultrawideband random noise radar design for through-wall surveillance [J]. IEEE Transactions on Aerospace and Electronic Systems,2010,46(4):1716- 1730.
  • 2F Soldovieri, F Ahmad,R Solimen. Validation of microwave to-mographic inverse mattering approach via through-the-wall experiments in semi controlled conditions [J]. IEEF. Geosciences and Remote Sensing Letters,2011,8( 1 ) : 123 - 127.
  • 3E Ertin,R L Moses. Through-the-wall SAR attributed scattering center feature estimation [ J ]. IEEE Transactions on Geosciences and Remote Sensing, 2009,47 ( 5 ) : 1338 - 1348.
  • 4E J Baranoski. Through-wall imaging: Historical perspective and future directions [J]. Journal of Franklin Institute, 2008,345(6):556- 569.
  • 5L M H Ulander, H Hellsten, G Stenstrom. Synthetic-aperture radar processing using fast factorized back-projection [J].IEEE Transactions on Aerospace and Electronic Systems, 2003,39(3) :760 - 776.
  • 6Ahad, M G Amin, S A Kassam. Synthetic aperture beamformer for imaging through a dielectric wall [ J]. IEEE Transactions on Aerospace and Electronic Systems, 2005,41 ( 1 ) : 271 - 283.
  • 7M M Nikolic, A Nehorai, A R Djordjevic. Estimating moving targets behind reinforced walls using radar [J]. IEEE Transactions on Antennas and Propagation, 2009, 57 ( 11 ): 3530 - 3538.
  • 8G Y Wang,M GAmin, Y M Zhang. New approach for target locations in the presence of wall ambiguities [ J]. IEEE Transactions on Aerospace and Electronic Systems, 2006, 42 ( 1 ) : 301 - 315.
  • 9G Y Wang,M G Amin. Imaging through unknown walls using different standoff distances [ J ]. IEEE Transactions on Signal Processing, 2006,54(10) :4015 -4025.
  • 10F Ahmad, M GAmin, G Mandapafi. Autofocusing of through-the-wall radar imagery under unknown wall characteristics[J]. IEEE Transactions on Image Processing, 2007, 16 ( 7 ) : 1785- 1795.

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电子与信息学报
2011年 第2期

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