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首页> 外文期刊>IEEE Geoscience and Remote Sensing Letters >Deramp Space–Time Adaptive Processing for Multichannel SAR Systems
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Deramp Space–Time Adaptive Processing for Multichannel SAR Systems

机译:多通道SAR系统的Deramp时空自适应处理

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摘要

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.
机译:这封信提出了一种用于合成孔径雷达(SAR)系统的新型deramp时空自适应处理(Deramp-STAP)方法,以实现有效的杂波抑制。与传统的STAP相比,该方法可以克服多普勒频移引起的运动目标的频谱包裹问题。此外,在信号欠采样的情况下,通过所提出的方法可以避免移动目标的方位角上的模糊聚焦位置。而且,由于我们只需要考虑运动目标的基带速度,就可以大大降低计算复杂度。在此,为了抑制杂波,基带速度的范围比实际目标速度的范围小得多。仿真结果验证了该算法的有效性。

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