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SAR图像中恒速动目标的定位 被引量：1

Constant-Speed Moving Target Positioning in SAR Image
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摘要 分别利用恒速动目标的信号幅度和信号相位估计动目标信号的频谱中心和多普勒调频率,结果不受动目标位置影响,解决了"方位位置不确定问题"。根据动目标方位向信号的频谱中心、调频率和动目标像位置,实现定位动目标。将聚焦良好的静止背景和动目标像以正确的相对位置绘制到同一幅图像中,是对动目标定位的最好表达方式。 By using the structure of amplitude and phase modulations of the returned echo from a moving target in the Fourier domain, a novel methodology for estimating Doppler shift is presented. And its result is not affected by the target position. Therefore the inherent ＂azimuth position uncertainty＂ problem to single channel SAR based systems is solved. The location of moving target is obtained from the estimation values of Doppler shift, Doppler modulation rate and the moving target focused image position.
作者 陈广东 聂志彪 朱兆达 朱岱寅
机构地区 南京航空航天大学无人机研究院 南京航空航天大学信息科学与技术学院
出处 《南京航空航天大学学报》 EI CAS CSCD 北大核心 2007年第4期520-523,共4页 Journal of Nanjing University of Aeronautics & Astronautics
基金 航空科学基金(2006ZC52036)资助项目
关键词 合成孔径雷达 动目标检测 多普勒中心 多普勒调频率 synthetic aperture radar moving target detection Doppler centroid Doppler modulation
分类号 TN957.52 [电子电信—信号与信息处理] TN958 [电子电信—信号与信息处理]
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参考文献8

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同被引文献11

  • 1周峰,李亚超,邢孟道,保铮.一种单通道SAR地面运动目标成像和运动参数估计方法[J].电子学报,2007,35(3):543-548. 被引量：23
  • 2VU V T,SJOGREN T K,et al. Detection of moving targets by focusing in UWB SAR-Theory and experimental results[ J]. IEEE Trans on Geoscience and Remote Sensing,2010,48(10) : 3799 - 3815.
  • 3CHAPMAN R D,HAWES C M,et al. Target moron ambigui- ties in single-aperture synthetic aperture radar[J]. 1EEE Trans- actions on Aerospace Electronic System, 2010,46( 1 ) : 1142 - 1156.
  • 4RANEY R K. Synthetic aperture imaging radar and moving tar- gets[ J ]. IEEE Transactions on Aerospace Electronic System, 1971,7(5) :499 - 505.
  • 5R'tiEGG M,MEIER E,et al. Capabilities of dual-frequency mil- limeter wave SAR with monopulse processing for ground mov- ing target indication[ J]. IEEE Transactions on Geoscience Re- mote Sensing,2007,45(3) :539 - 553.
  • 6WANG G, XIA X, et al. Dual-speed SAR imaging of moving targets[ J ]. IEEE Transaclions on Aerospace and Electronic Systems, 2006,42(1) : 368 - 379.
  • 7MINARDI M J, GORHAM L A, et al. Ground moving targetdetection and tracking based on generalized SAR processing and change detection[ A]. Algorithms for Synthetic Aperture Radar Imagery XII[C]. Dublin, Ireland: SPIE,2005.156 - 165.
  • 8DIAS J, MARQUES P. Multiple moving target detection and trajectory parameters estimation using a single SAR sensor[J]. IEEE Transactions on Aerospace Eleclronic System, 2003, 39 (2) :604 - 624.
  • 9周红,黄晓涛,常玉林,周智敏.基于三通道UWB SAR子孔径图像序列的ATI方法[J].电子学报,2009,37(5):930-936. 被引量：2
  • 10常玉林,周红,黄晓涛,周智敏.多通道SAR频率多普勒域宽带长CPI STAP方法[J].电子学报,2011,39(6):1245-1252. 被引量：5

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南京航空航天大学学报
2007年 第4期

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