Sub-aperture based blind speed side lobe (BSSL) suppression in Radon Fourier transform (RFT)

Sub-aperture based blind speed side lobe (BSSL) suppression in Radon Fourier transform (RFT)

The Radon-Fourier transform (RFT) is a novel long-time coherent integration method we have previously proposed for far-range, weak and high speed target detection. Nevertheless, due to the discrete pulse sampling, finite range resolution and limited integration time, the blind speed side lobe (BSSL)...

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Hauptverfasser: Lichang Qian, Jia Xu, Wenfeng Sun, Yingning Peng
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Sprache:eng
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blind speed side lobe (BSSL) suppression
evaluation criterion
Radon-Fourier transform (RFT)
sub-aperture processing
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Jia Xu
Wenfeng Sun
Yingning Peng
description The Radon-Fourier transform (RFT) is a novel long-time coherent integration method we have previously proposed for far-range, weak and high speed target detection. Nevertheless, due to the discrete pulse sampling, finite range resolution and limited integration time, the blind speed side lobe (BSSL) phenomenon may inevitably appear in the RFT output. The existence of BSSL can lead to large false alarms and detection loss in the RFT. To address this problem, a new BSSL suppression method is proposed in this paper. By jointly processing the two different sub-aperture RFT outputs, the BSSL can be easily suppressed without integration loss. Furthermore, two evaluation criterions of the BSSL suppression are also proposed. Finally, detailed numerical experiments are provided to demonstrate the effectiveness of the proposed method.
doi_str_mv 10.1109/ICoSP.2012.6491947
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subjects blind speed side lobe (BSSL) suppression
evaluation criterion
Radon-Fourier transform (RFT)
sub-aperture processing
title Sub-aperture based blind speed side lobe (BSSL) suppression in Radon Fourier transform (RFT)
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