非正侧阵雷达距离模糊杂波抑制新方法

发布时间：2018-12-15 07:16

【摘要】：为了改善严重距离模糊情况下雷达对地面强杂波的抑制性能,提出了一种基于频率分集技术的杂波抑制方法.首先,推导了非正侧阵频率分集雷达空时信号模型,在此基础上,给出了频率增量的设计准则用来区分距离模糊杂波以及防止回波信号去相关.然后,利用子空间投影算法抑制距离模糊杂波.仿真试验证明了该方法的有效性,在俯仰维自由度有限的情况下,该方法的性能优于传统俯仰滤波方法.
[Abstract]:In order to improve the performance of radar to suppress ground strong clutter in the case of severe range ambiguity, a frequency diversity based clutter suppression method is proposed. Firstly, the space-time signal model of non-positive array frequency diversity radar is derived, and the design criterion of frequency increment is presented to distinguish range fuzzy clutter and prevent echo signal de-correlation. Then, the subspace projection algorithm is used to suppress the range fuzzy clutter. The simulation results show that the proposed method is effective and the performance of this method is better than that of the traditional pitch filtering method under the condition of limited degree of freedom in pitch dimension.
【作者单位】：西安电子科技大学雷达信号处理国家重点实验室;
【基金】：国家自然科学基金资助项目(61301282)
【分类号】：TN957.51

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