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Volume 27 Issue 1
Jan.  2005
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Huang Yuan-bao, Bao Zheng. A New Two-Dimension-Separated Approach to High Squint SAR Processing[J]. Journal of Electronics & Information Technology, 2005, 27(1): 1-5.
Citation: Huang Yuan-bao, Bao Zheng. A New Two-Dimension-Separated Approach to High Squint SAR Processing[J]. Journal of Electronics & Information Technology, 2005, 27(1): 1-5.

A New Two-Dimension-Separated Approach to High Squint SAR Processing

  • Received Date: 2003-08-25
  • Rev Recd Date: 2004-01-08
  • Publish Date: 2005-01-19
  • The high squint SAR signal features large range walk and small range curvature, which enable the raw data be compressed in range and azimuth separately. But in case of large azimuth scene size , complex algorithms must be used to cope with the constraint of the focus depth. In this paper a new two-dimension-separated method is presented to compensate the azimuth-dependent chirp rate using a non-linear chirp scaling operation. Finally simulation results are presented to verify the method.
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  • Jin M Y,Wu C.A SAR correlation alorithm which accomodates large range migration.IEEE Trans.on GRS,1984,22(6):592-597.[2]Wong F H.[J].Gumming IG. Error sensitivities of a secondary rangecompression algorithm for processing squinted satellite SAR data.Proc.IGARSS89, Vancouver.1989,:-Chang C Y.[J].Jin M, Curlander J C. Squint mode SAR processingalgorithms. Proc.IGARSS89, Vancouver.1989,:-[3]Smith A M. A new approach to range-Doppler SAR processing[J].Int. J. Remote Sensing.1991,12(2):235-[4]Runge H, Bamler R. Verfahren zur korrektur von range migrationbei einer bilderzeugung bei synthetischem apertur radar. DLRpatent application, July 8, 1991.[5]Davidson G W, Gumming I G, Ito M R. A chirp scaling approachfor processing squint mode SAR data. IEEE Trans, on AES, 1996,32(1): 121 - 133.[6]Jakowatz C V, et al. Spotlight-Mode Synthetic Aperture Radar: A Signal Processing Approach, Boston: Kluwer Academic Publishers, 1996: chapter 3.[7]Tat Soon Yeo, Ngee Leng Tan, Cheng Bo Zhang, Yi Hui Lu. A new subaperture approach to high squit SAR processing.IEEE Trans.on GRS,2001,39(5):954-968.[8]徐永健,娄晓光,王贞松.拉格朗日乘子法在机载SAR成像系统降采样滤波器设计中的应用.电子学报,2000,28(12):11-14.
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