CAJ | 학술논문

目前，多级维纳滤波器是一种收敛速度最快的降秩空时自适应处理算法，但它只适合于处理平稳随机信号，不能直接用于抑制非均匀的机载共形阵雷达杂波。该文在分析共形阵雷达杂波特性的基础上，提出采用俯仰向空域滤波改善杂波的非均匀性，改进了传统的协方差矩阵加权算法，最后形成了一种基于俯仰向空域滤波的协方差矩阵加权多级维纳滤波算法，用于抑制共形阵雷达杂波。仿真结果表明，该文方法抑制共形阵雷达杂波的综合性能优于现有其他方法，且计算复杂度低，收敛速度快，便于工程实现，在共形阵雷达杂波抑制中具有实际应用前景。
목전，다급유납려파기시일충수렴속도최쾌적강질공시자괄응처리산법，단타지괄합우처리평은수궤신호，불능직접용우억제비균균적궤재공형진뢰체잡파。해문재분석공형진뢰체잡파특성적기출상，제출채용부앙향공역려파개선잡파적비균균성，개진료전통적협방차구진가권산법，최후형성료일충기우부앙향공역려파적협방차구진가권다급유납려파산법，용우억제공형진뢰체잡파。방진결과표명，해문방법억제공형진뢰체잡파적종합성능우우현유기타방법，차계산복잡도저，수렴속도쾌，편우공정실현，재공형진뢰체잡파억제중구유실제응용전경。
Multistage Wiener filter is currently one of the reduced rank space-time adaptive processing algorithms with the fastest convergent speed, but it is only suitable for stationary stochastic signal, so it is not able to directly suppress non-homogeneous clutter of airborne conformal array radar. Based on the characteristic analysis of conformal array radar clutter, a spatial filter in elevation is proposed to overcome the non-homogeneity of the clutter, the traditional covariance matrix taper algorithm is improved and finally a novel algorithm of suppressing clutter of airborne conformal array radar, named spatial filter in Elevation-based New Covariance Matrix Taper MultiStage Wiener Filter algorithm (ENCMT-MSWF) is constructed. Simulation results show that the proposed method has better performance in suppression of conformal array radar clutter than other existing methods, and it has the advantages of small amount of computation and fast convergence speed. It is easy to be realized in engineering and has practical application prospects in conformal array radar clutter suppression.