A Modified Method of SAR Moving Target Detection and Imaging Based on Fractional Fourier Transform

Deng Bin; Qin Yu-liang; Wang Hong-qiang; Li Xiang

doi:10.3724/SP.J.1146.2006.01144

Volume 30 Issue 2

Jan. 2011

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Article Navigation > Journal of Electronics & Information Technology > 2008 > 30(2): 326-330

Deng Bin, Qin Yu-liang, Wang Hong-qiang, Li Xiang. A Modified Method of SAR Moving Target Detection and Imaging Based on Fractional Fourier Transform[J]. Journal of Electronics & Information Technology, 2008, 30(2): 326-330. doi: 10.3724/SP.J.1146.2006.01144

Citation:

Deng Bin, Qin Yu-liang, Wang Hong-qiang, Li Xiang. A Modified Method of SAR Moving Target Detection and Imaging Based on Fractional Fourier Transform[J]. Journal of Electronics & Information Technology, 2008, 30(2): 326-330. doi: 10.3724/SP.J.1146.2006.01144

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A Modified Method of SAR Moving Target Detection and Imaging Based on Fractional Fourier Transform

doi: 10.3724/SP.J.1146.2006.01144

Received Date: 2006-08-02
Rev Recd Date: 2007-04-16
Publish Date: 2008-02-19

Abstract

Abstract

To overcome the shortcomings of the conventional method of SAR moving target detection and imaging based on the Fractional Fourier Transform(FrFT), a modified method, which combines filtering in fractional Fourier domain, reassigned spectrogram and CLEAN, is presented for the detection, parameter estimation and imaging of moving targets. This method is able to estimate precisely the initial Doppler frequency and the Doppler centroid, and to distinguish between multiple targets lying in the same line in the time-frequency plane. The transform formulas between FrFT numeral results and Doppler parameters are also given in the paper. Simulated results prove the validity of the approach.

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References(1)

References

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