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Article Navigation> JOURNAL OF BEIJING INSTITUTE OF TECHNOLOGY> 2003> 12(4): 420-424
DENG Bing, TAO Ran, QI Lin, LIU Feng. Novel Way to Suppress Reverberation Based on Fractional Fourier Transform[J]. JOURNAL OF BEIJING INSTITUTE OF TECHNOLOGY, 2003, 12(4): 420-424.
Citation: DENG Bing, TAO Ran, QI Lin, LIU Feng. Novel Way to Suppress Reverberation Based on Fractional Fourier Transform[J].JOURNAL OF BEIJING INSTITUTE OF TECHNOLOGY, 2003, 12(4): 420-424.
shu

Novel Way to Suppress Reverberation Based on Fractional Fourier Transform

  • 1.

    Department of Electronic Engineering, School of Information Science and Technology, Beijing Institute of Technology, Beijing100081, China; Department of Electronic Engineering, Naval Aeronautical Engineering Institute, Yantai, Shandong264001, China

  • 2.

    Department of Electronic Engineering, School of Information Science and Technology, Beijing Institute of Technology, Beijing100081, China

Funds:theNationalNaturalScienceFoundation(69972003)
  • Received Date:2003-06-17
    Abstract
  • A novel method of anti-reverberation based on the fractional Fourier transformation is presented. By virtue of the fact that it has a good focus property in the fractional Fourier domain, the linearly frequency modulation (LFM) signal can be seperated from the reverberation through a swept-frequency filter. With the actual reverberation data and the LFM pulse for seperation, the good results are obtained: the reverbareation is largely removed, and relatively the better performance is shown under the lower signal reverberation ratio (SRR). Based on the theorical analyses and simulation results, two schemes for detecting targets are provided: one is the detection of the LFM echo from the target with a threshold by means of this method directly; the other is to detect the target by means of other methods, with this method performing pre-process to increase SRR, which need enough large SRR.
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    • References (12)
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