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機載合成孔徑雷達大斜視高分辨率重疊子孔徑成像算法研究

李勇 朱岱寅 朱兆達

李勇, 朱岱寅, 朱兆達. 機載合成孔徑雷達大斜視高分辨率重疊子孔徑成像算法研究[J]. 電子與信息學報, 2006, 28(9): 1577-1581.
引用本文: 李勇, 朱岱寅, 朱兆達. 機載合成孔徑雷達大斜視高分辨率重疊子孔徑成像算法研究[J]. 電子與信息學報, 2006, 28(9): 1577-1581.
Li Yong, Zhu Dai-yin, Zhu Zhao-da. Study on High Resolution Overlapped Subaperture Imaging Algorithm for High Squint Airborne SAR Processing[J]. Journal of Electronics & Information Technology, 2006, 28(9): 1577-1581.
Citation: Li Yong, Zhu Dai-yin, Zhu Zhao-da. Study on High Resolution Overlapped Subaperture Imaging Algorithm for High Squint Airborne SAR Processing[J]. Journal of Electronics & Information Technology, 2006, 28(9): 1577-1581.

機載合成孔徑雷達大斜視高分辨率重疊子孔徑成像算法研究

Study on High Resolution Overlapped Subaperture Imaging Algorithm for High Squint Airborne SAR Processing

  • 摘要: 該文提出了一種結合圖像二維幾何失真校正和空變相位誤差補償?shù)拇笮币?、高分辨率機載合成孔徑雷達重疊子孔徑成像處理方法。其運動補償過程不需要實時調(diào)整雷達參數(shù),易于工程實現(xiàn)。整個成像處理過程融合了基于頻譜分析的分步變換技術,以線性距離多普勒算法生成子孔徑圖像為前提,根據(jù)轉(zhuǎn)臺成像的基本原理,通過固定參考系下地理坐標的變換和定位,實現(xiàn)了不同子孔徑圖像之間散射點的距離和多普勒對準,并有效地補償了空變剩余相位誤差。點目標仿真和實測數(shù)據(jù)成像結果證明了該處理方法的有效性。
  • Ausherman D A, Kozma A, Walker J L,et al.. Developments inRadar Imaging[J].IEEE Trans. on Aerospace rend ElectronicSystems.1984, 20(4):363-400[2]Munson D C, O'Brien J D, Jenkins W K. A tomographicformulation of spotlight-mode synthetic aperture radar. Proc.IEEE, 1983, 72(8): 917-925.[3]Raney R K, Runge H, Bamler R, et al.. Precision SAR processing using chirp scaling. IEEE Trans. on Geoscience rend RemoteSensing, 1994, 32(4): 786-799.[4]Cafforio C, Prati C, Rocca F. SAR data focusing using seismicmigration techniques[J].IEEE Trans. on Aerospace and Electronicsystems.1991, 27(2):194-207[5]Mittermayer J, Moreira A, Loffeld O. Spotlight SAR dataprocessing using the frequency scaling algorithm[J].IEEE Trans. onGeoscience and Remote Sensing.1999, 37(5):2198-2213[6]Sack M, Ito M R, Gumming I. Application of efficient linear FMmatched filtering algorithms to synthetic aperture radarprocessing.lEEPro.-F, 1985, 132(1):45-57.[7]Wu K H, Vant M R. Extensions to the step transform SARprocessing technique[J].IEEE Trans. on Aerospace and Electronicsysterm.1985, 21(3):338-344[8]Burns B L, Cordaro J T. A SAR image-formation algorithm thatcompensates for the spatially-variant effects of antenna motion.SPIE Conference Proceedings, Orlando, April 1994, 2230: 14-24.[9]Tsunoda S I, Pace F, Stence J, et al. Lynx a high-resolutionsynthetic aperture radar. IEEE Aerospace ConferenceProceedings, 2000, 5: 1-8.[10]Walker B, Sander C, Thompson M, et al.. A high-resolution,four-band SAR testbed with real-time image formation. IEEECeoscience and Remote Sensing Symposium, 1996, 3: 27-31.[11]Walk J L. Range-Doppler imaging of rotating objects[J].IEEE Transon Aerospace and Electronic Systems.1980, 16(1):23-52[12]朱岱寅,朱兆達,葉少華,等.機載SAR斜視區(qū)域成像研究,電子學報,2002. 30(9): 1387-1389.[13]Li Yong, Zhu Daiyin, Zhu Zhaoda. Geometric distortioncorrection in the subaperture processing for high squint airborneSAR imaging. IEEE Ceoscience and Remote SensingSymposium, 2004, 6: 3919-3922.[14]李勇,朱岱寅,朱兆達.機載合成孔徑需達的高分辨率子孔徑成像算法研究,電r與信息學報,2004. 26(SuppI): 91-96.
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出版歷程
  • 收稿日期:  2004-12-27
  • 修回日期:  2005-09-30
  • 刊出日期:  2006-09-19

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