【摘要】 研究了箔条干扰背景下利用时频投影理论解决高分辨雷达抑制杂波干扰的问题 .文中模拟了在干扰背景中目标稳定的原始距离像 ,基于线性信号空间的Wigner Ville分布 ,根据时频 (TF)滤波和时频展开理论 ,即在特定时频通域里最优TF子空间就是该通域的特征信号子空间 ,设计目标距离像的通域及时频投影滤波器 ,对雷达回波进行脉冲周期内域通滤波 .仿真表明该方法具有在箔条杂波背景下抑制干扰的良好能力更多还原

【Abstract】 The problem of suppressing the chaff interference is investigated, by the use of the theory of time frequency(TF) projection. First the method of obtaining stable radar range profiles is briefly discussed and then based on the Wigner Ville distribution (WVD) of the linear signal space the theory of TF filter and TF expansion are pointed out. The optimal TF subspace in the specified target TF pass region is constructed, which is just the eigenspace of the TF region. Simulation results show that the method of TF region pass filtering on each pulse return has better performance in supperssing the chaff interference.更多还原