基于多级维纳滤波的机载共形阵雷达杂波抑制方法研究

发布时间：2018-01-21 14:06

本文关键词： 共形阵雷达杂波抑制非均匀性多级维纳滤波　出处：《电子与信息学报》2014年10期 　论文类型：期刊论文

【摘要】：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。
[Abstract]:At present, multistage Wiener filter is the fastest convergent algorithm of reducing rank space time adaptive processing algorithm, but it is only suitable for processing stationary random signals. In this paper, based on the analysis of the clutter characteristics of conformal array radar, the pitching spatial filtering is proposed to improve the heterogeneity of the clutter. The traditional covariance matrix weighting algorithm is improved, and a covariance matrix weighted multistage Wiener filtering algorithm based on pitching spatial filtering is developed to suppress the clutter of conformal array radar. The simulation results show that. In this paper, the synthesis performance of conformal array radar clutter suppression is superior to that of other existing methods, and the computational complexity is low, the convergence speed is fast, and it is easy to be realized in engineering, so it has a practical application prospect in conformal array radar clutter suppression.
【作者单位】：电子科技大学生命科学与技术学院;赣南师范学院;
【基金】：航空科学基金(20112080014)资助课题
【分类号】：TN959.73
【正文快照】： 1引言共形阵雷达,由于其便于集成,能减小载机负荷和雷达散射截面积等独特优势,成为将来相控阵雷达的重要发展方向。不同于平面相控阵雷达,共形阵雷达接收的杂波往往在不同方向都呈现出一定的非均匀性,在近距离探测时这种非均匀性尤其严重[1],这就导致了传统空时自适应处理(Spa

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