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聚束式SAR的宽场景成像算法 被引量：7

Algorithm for Wide-swath Spotlight SAR Data Processing
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摘要 提出了基于SPECAN处理的宽场景聚束式SAR成像算法.首先对距离Dechirp后的信号在方位上作谱分析(SPECAN)处理消除方位模糊并对信号支撑区进行伸缩与平移变换,二次相位补偿后选择合适的插值方法恢复信号理想支撑区,最后二维IFFT成像.讨论并给出了算法对脉冲重复频率选择的限制.仿真实验验证了该方法的有效性. This paper presents processing algorithm for wide-swath spotlight SAR data processing based on spectram analysis （SPECAN）. The first step of the proposed algorithm implements SPECAN processing to range dechirped signal. This operation can eliminate azimuth specmma folding effect and migrate and scale the azimuth data support. Then compensates azimuth quadratic phase and recovers the ideal data support via appropriate interpolation. Finally focuses image with a two-dimensional inverse Fourier trans- form.Discussed and gave the restriction on the pulse repetition frequency （PRF）.Experiments confirm the validity of the presented algorithm.
作者 井伟 张磊 邢孟道 保铮
机构地区 西安电子科技大学雷达信号处理重点实验室
出处 《电子学报》 EI CAS CSCD 北大核心 2009年第3期470-475,共6页 Acta Electronica Sinica
基金 教育部长江学者和创新团队支持计划资助(No.IRT0645) 武器装备预研基金(No.9140A07020408DZ0116)资助
关键词 雷达成像 聚束SAR 谱分析处理 宽场景成像 radar imaging spotlight SAR spectral analysis （SPECAN） processing wide-swath image
分类号 TN957 [电子电信—信号与信息处理]
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参考文献5

  • 1W G Carrara, R S Goodman,M A Ricoy. New algorithms for widefield SAR image formation[ A] .2004 IEEE Radar Conference[C ]. Philadelphia: PA, 2004.38 - 43.
  • 2R Lanari,M Tesauro,E Sansosti,G Fornaro. Spotlight SAR data focusing based on a two-step processing approach[ J] . IEEE. Trans, on Geosci. Remote Sensing, 2001,39 (9) : 1993 - 2004.
  • 3M Sack, M Ito, and I Cumming. Application of efficient linear FM matched filtering algorithms to SAR processing[ J]. Proc Inst Elect Eng, 1985,132( 1 ) :45 - 57.
  • 4R Lanari, S Hensley, P A Rosen. Chirp z-transform based SPECAN approach for phase preserving ScanSAR image generation[J ]. Proc Inst Electron Eng-Radar, Sonar Navigat. 1998,145(5) :255 - 261.
  • 5W G Carrara, R S Goodman, R M Majewski. Spotlight Synthetic Aperture Radar Signal Processing Algorithrns[M]. Boston: Artech House, 1995.

同被引文献66

  • 1顾毅,李春升,陈杰,周荫清.高分辨率星载聚束式SAR成像处理实现方法[J].宇航学报,2005,26(B10):87-92. 被引量：2
  • 2李燕平,邢孟道,保铮.宽带机械扫描雷达的DBS成像和动目标检测[J].西安电子科技大学学报,2006,33(1):116-120. 被引量：13
  • 3Lanari R,Tesauro M,and Sansosti E,et al..Spotlisht SAR data focusing based on a two-step processing approach[J].IEEE Transactions on Geoscience and Remote Sensing,2001,39(9):1993-2004.
  • 4Reigber A,Alivizators E,and Potsis A,et al..Extended wavenumber-domain synthetic aperture radar focusing with integrated motion compensation[J].IEE Proceedings:Radar,Sonar and Navigation,2006,153(3):301-310.
  • 5Davidson G W,Cumming I G,and Ito M R.A chirp scaling approach for processing squint mode SAR data[J].IEEE Tranctions on Aerospace and Electronic Systems,1996,32(1):121-133.
  • 6Jin Li-hua and Liu Xing-zhao.Nonlinear frequency scaling algorithm for high squint spotlight SAR data processing[J].EURASIP Journal on Advances in Signal Processing,2008,Article ID 657081:1-8.
  • 7Guo Liang,Xing Mendao,and Tang Yu,et al..A novel modified omega-k algorithm for synthetic aperture imaging lidar through the atmosphere[J].Sensors,2008,8:3056-3066.
  • 8Mittermayer J and Moreira A.Spotlight SAR data processing using the frequency scaling algorithm[J].IEEE Tranctions on Geoscience and Remote Sensing,1999,37(5):2198-2214.
  • 9Garrara W G,Goodman R S,Majewski B M.Spotlight synthetic aperture radar[M].Boston Artech House,1995.
  • 10Lanari R,Tesauro M,Sansosti E,et al.Spotlight SAR data focusing based on a two-step processing approach[J].IEEE Trans on Geosci Remote Sensing,2001,39(9):1993-2004.

引证文献7

二级引证文献6

电子学报
2009年 第3期

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