CAJ | 학술논문

针对传统自适应极化滤波算法存在收敛速度慢、迭代步长因子选取困难等问题，采用极化聚类中心估计理论设计了一种快速自适应极化滤波器，实现了对极化雷达回波中的干扰信号逐脉冲地自适应精确对消。滤波器通过距离单元选通获取干扰信号样本，对样本极化聚类中心的直接计算能够快速估计干扰信号在当前脉冲内极化状态，依据干扰输出功率最小原则最终实现快速滤波过程，相比于传统极化滤波算法有更快的收敛速度和更稳定的干扰抑制性能。仿真对比实验结果验证了该方法的快速有效性。
침대전통자괄응겁화려파산법존재수렴속도만、질대보장인자선취곤난등문제，채용겁화취류중심고계이론설계료일충쾌속자괄응겁화려파기，실현료대겁화뢰체회파중적간우신호축맥충지자괄응정학대소。려파기통과거리단원선통획취간우신호양본，대양본겁화취류중심적직접계산능구쾌속고계간우신호재당전맥충내겁화상태，의거간우수출공솔최소원칙최종실현쾌속려파과정，상비우전통겁화려파산법유경쾌적수렴속도화경은정적간우억제성능。방진대비실험결과험증료해방법적쾌속유효성。
According to the traditional adaptive polarization filter algorithms had problems of low convergence speed and the iterative factor being hard to choose,a fast adaptive polarization filter was designed by utilizing the estimation theory of polarizing cluster center.The interference signal in polarimetric radar reception could be cancelled accurately and adaptively pulse-by-pulse.The range-gated technique in-pulse was adopted to obtain the interference signal samples.The current polarization state of the interference signal was estimated rapidly by computing the polarizing cluster center directly.Based on the principal of minimum interference output power,the fast filter process could be carried out.Compared to the traditional polarization filter,it is faster in convergence and more stable to the performance of interference suppression.Rapidity and efficiency of the filter algorithm are validated by simulation results.