GSM信号外辐射源雷达同频干扰抑制方法

发布时间：2018-06-15 01:27

  本文选题：外辐射源雷达 + 同频干扰　； 参考：《西安电子科技大学学报》2017年06期

【摘要】：在外辐射源雷达中,尤其是全球移动通信信号辐射源雷达中,不仅存在很强的直达波和多路径干扰,同时还存在着来自同频基站的同频干扰.在没有干扰样本的情况下,很难单独利用时域相消的方法抑制同频干扰.针对回波通道中含有同频干扰的问题,提出了一种外辐射源雷达同频干扰的抑制方法.首先利用低副瓣空域滤波消除远区的弱干扰,同时对近区的强干扰进行一定程度的抑制;然后利用时域干扰对消算法抑制来自主基站的直达波及多径干扰;最后利用稳健的自适应波束形成方法对剩余的干扰进行抑制.理论分析与计算机仿真实验表明,该方法具有良好的干扰抑制性能和较低的运算量.
[Abstract]:In the external emitter radar, especially in the global mobile communication signal emitter radar, there is not only strong direct wave and multipath interference, but also co-frequency interference from the same frequency base station. In the absence of interference samples, it is difficult to suppress the same frequency interference by using time domain cancellation alone. Aiming at the problem of co-frequency interference in echo channel, a method for suppressing the co-frequency interference of external emitter radar is proposed. The low sidelobe spatial filtering is used to eliminate the weak interference in the far region and the strong interference in the near region is suppressed to a certain extent, and the time domain interference cancellation algorithm is used to suppress the direct and multipath interference from the main base station. Finally, robust adaptive beamforming method is used to suppress the remaining interference. Theoretical analysis and computer simulation experiments show that the proposed method has good interference suppression performance and low computational complexity.
【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】：国家部委基金资助项目(9140A07020614DZ01) 国家自然科学基金资助项目(61401526)
【分类号】：TN958
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本文编号：2019921