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Deramp Space-Time Adaptive Processing for Multichannel SAR Systems
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DOI：10.1109/LGRS.2013.2295222.png)
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This letter proposes a novel deramp space-time adaptive processing (Deramp-STAP) method for synthetic aperture radar (SAR) systems to achieve effective clutter suppression. Compared with the traditional STAP, the proposed method can overcome the spectral wrapping problem of a moving target from a Doppler shift. Furthermore, in the case of signal undersampling, the ambiguously focused position in azimuth for a moving target can be avoided by the proposed method. Moreover, the computational complexity can be drastically reduced because we only need to consider the baseband velocity of the moving target; here, the range of the baseband velocity is much smaller than that of the real target velocity, for clutter suppression in this method. Simulation results validate the effectiveness of the proposed algorithm.
Keyword:
Deramp space-time adaptive processing (Deramp-STAP)
moving target
multichannel
synthetic aperture radar (SAR)
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