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Volume 24 Issue 8
Aug.  2002
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Sun Hongbo, Gu Hong, Su Weimin, Liu Guosui. The airborne sar moving target detection based on fractional fourier transform[J]. Journal of Electronics & Information Technology, 2002, 24(8): 1060-1065.
Citation: Sun Hongbo, Gu Hong, Su Weimin, Liu Guosui. The airborne sar moving target detection based on fractional fourier transform[J]. Journal of Electronics & Information Technology, 2002, 24(8): 1060-1065.

The airborne sar moving target detection based on fractional fourier transform

  • Received Date: 2001-04-09
  • Rev Recd Date: 2001-08-27
  • Publish Date: 2002-08-19
  • In this paper, the signal model of airborne SAR moving target echo is constructed firstly, which is a chirp signal naturally. According to this feature, a new technique of SAR moving target detection based on fractional Fourier transform is proposed. The effects of coupling in time-frequency domain on signal detection are eliminated. Compare with the bilinear time-frequency distribution algorithms, the fractional Fourier transform is a linear operator, and it will not affected by the intercross terms when multiple moving targets exist. The simulation results validate the effectiveness of this technique.
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  • H.B. Sun, H. Gu, W. M. Su, G. S. Liu, A review of moving target detection and imaging by airborne synthetic aperture radar, EUSAR2000, Munich Germany, May 2000, 544-548.H.B. Sun, W. M. Su, H. Gu, G. S. Liu, Performance analysis of several clutter cancellation techniques by multi-channel SAR, EUSAR2000, Munich Germany, May 2000, 549 552.[2]S. Barbarossa, A. Farina, Detection and imaging of moving objects with synthetic aperture radar,Part 2: Joint time-frequency analysis by Wigner-Ville distribution, IEE Proc.-F., 1992, 139(1),89-97.[3]S. Barbarossa, Analysis of multicomponent LFM signals by a combined Wigner-Hough transform,IEEE Trans. on SP., 1995, SP-43(6), 1511-1515.[4]张贤达,保铮,非平稳信号分析与处理,北京,国防工业出版社,1998年,第1版,186-223[5]V. Namias, The fractional Fourier transform and its application in quantum mechanics, J. Inst.Math. Its Appl., 1980, 25(2), 241-265.[6]A.C. McBride, F. H. Kerr, On Namiass fractional Fourier transform, IMA J. Appl. Math., 1987,39(2), 159-175.[7]L.M. Bernardo, O. D. D. Soates, Fractional Fourier transform and imaging, J. Opt. Soc. Amer.A., 1994, 11(9), 2622-2626.
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