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机载并行双站大斜视SAR两步式成像算法 被引量:1

Two-step Imaging Algorithm for Airborne Parallel High Squint SAR
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摘要 该文提出了机载并行双站大斜视SAR的两步式成像算法。针对双站大斜视回波信号的距离-方位强耦合,在距离频域-方位时域校正收、发载机大斜视引起的大距离走动,然后推导改进点目标频谱公式,并用Chirp Scaling方法校正残余距离徙动得到成像结果。针对成像结果中出现的点目标位置偏移的问题,推导了成像场景到地面场景的目标位置校正方法。最后,通过仿真验证了所提的两步式成像算法和目标位置校正方法的有效性。 A two-step imaging algorithm for focusing airborne parallel high squint Synthetic Aperture Radar (SAR) data is proposed in this paper. For the serious cross coupling of echo signal in bistatic high squint SAR, Linear Range Walk Correction (LRWC) is performed in range frequency-azimuth time domain to correct the large LRW induced by the high squint model of receiver and transmitter. A Modified Bistatic Point Target Reference Spectrum (MBPTRS) is derived, and residual Range Cell Migration (RCM) is corrected by Chirp Scaling (CS) method to get the focusing result. To solve the target position displacements in the focusing result, a method of target position correction that converts the focusing image to the ground plane is derived. Finally, the experimental results with simulated data validate the effectiveness of the proposed two-step imaging algorithm and the method of target position correction.
出处 《电子与信息学报》 EI CSCD 北大核心 2014年第5期1036-1043,共8页 Journal of Electronics & Information Technology
关键词 大斜视 距离走动校正 目标位置校正 双站SAR Bistatic SAR High squint Target position correction
作者简介 冉金和:男,1986年生,博士生,研究方向为合成孔径雷达成像算法.通信作者:冉金和jinhe_ran@163.com 张剑云:男,1963年生,教授,博士生导师,主要研究方向为雷达及目标环境模拟、雷达信号处理、高速信号处理. 武拥军:男,1970年生,硕士生导师,研究方向为天线技术与微波成像.
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参考文献15

  • 1Walterscheid I,Ender J,Brenner A,et al.Bistatic SAR processing and experiments[J].IEEE Transactions on Geoscience and Remote Sensing,2006,44(10):2710-2717.
  • 2Zhang S,Xing M,Xia X,et al.Focus improvement of high-squint SAR based on azimuth dependence of quadratic range cell migration correciton[J].IEEE Geoscience and Remote Sensing Letters,2013,10(1):150-154.
  • 3An D,Huang X,Jin T,et al.Extended nonlinear chirp scaling algorithm for high-resolution highly squint SAR data focusing[J].IEEE Transactions on Geoscience and Remote Sensing,2012,50(9):3595-3609.
  • 4Ding Y and Munson D.A fast back-projection algorithm for bistatic SAR imaging[C].Proceedings of International Conference on Image Processing,Orlando,USA,2002,2:449-452.
  • 5Zhang Z,Xing M,Ding J,et al.Focusing parallel bistatic SAR data using the analytic transfer function in the wavenumber domain[J].IEEE Transactions on Geoscience and Remote Sensing,2007,45(11):3633-3645.
  • 6Zare A,Masnadi S,and Samadi S.Range-Doppler algorithm for processing bistatic SAR data based on the LBF in the constant-offset constellation[C].2012 IEEE Radar Conference(RADAR),Atlanta,GA,2012:17-21.
  • 7Wang R,Loffeld O,Nies H,et al.Chirp-scaling algorithm for bistatic SAR data in the constant-offset configuration[J].IEEE Transactions on Geosciew:e and Remote Sensing,2009 47(3):952-964.
  • 8武拥军,吴先良.基于CZT的机载并行双站斜视SAR成像算法[J].航空学报,2010,31(4):825-830. 被引量:2
  • 9Neo Y L,Wong F H,and Cumming I G.Processing of azimuth-invariant bistatic SAR data using the range Doppler algorithm[J].IEEE Transactions on Geoscience and Remote Sensing,2008,46(1):14-21.
  • 10Liu B,Wang T,Wu Q,et al.Bistatic SAR data focusing using an omega-K algorithm based on method of series reversion[J].IEEE Transactions on Geoseience and Remote Sensing,2009,47(8):2899-2912.

二级参考文献21

  • 1李申,孙进平,刘振华,于文震.合成孔径雷达的Chirp Z成像算法研究[J].现代雷达,2008,30(1):48-51. 被引量:3
  • 2何峰,梁甸农,董臻.适于大斜视角的星载双基地SAR波数域成像算法[J].电子学报,2005,33(6):1011-1014. 被引量:20
  • 3俞根苗,邓海涛,吴顺君.弹载SAR图像几何失真校正方法[J].西安电子科技大学学报,2006,33(3):386-389. 被引量:16
  • 4王亮,练有品,黄晓涛,周智敏.大斜视角与大波束角SAR成像比较[J].电子学报,2006,34(9):1672-1676. 被引量:18
  • 5Krieger G,Moreira A.Spaceborne Bi-and Muhistatic SAR:Potentials and Challenges[J].IEE Proc,Radar Sonar Navig,2006,153(3):184-198.
  • 6Moccia A,Salzillo G,Errico M.Performance of Spaceborne Bistatic Synthetic Aperture Radar[J].IEEE Trans on Aeros and Electro Syst,2005,41(4):1383-1395.
  • 7Walterscheid I,Ender J,Brenner A.Bistatic SAR Processing and Experiments[J].IEEE Trans on Geosc and Remote Sens,2006,44(10):2710-2717.
  • 8Ender J,Walterscheid I,Brenner A.Bistatic SAR-translational Invariant Processing and Experimental Results[J].IEE Proc-Radar Sonar Navig,2006,153(3):177-183.
  • 9Neo Y L,Wong H,Cumming I.Processing of Azimuth-Invariant Bistatic SAR Data Using the Range Doppler Algorithm[J].IEEE Trans on Geosc and Remote Sens,2008,46(1):14-21.
  • 10Pettersson M I. Extraction of moving ground targets by a bistatic ultra-wideband SAR[J]. IEE Proceedings: Radar, Sonar and Navigation, 2001, 148(1): 132- 139.

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