文章摘要
杨振,范展,吴文峰.矩阵预滤波器在抗运动干扰中的应用研究[J].,2014,33(6):484-489
矩阵预滤波器在抗运动干扰中的应用研究
Application research on matrix pre-filter against athletic interference
投稿时间:2013-11-03  修订日期:2014-08-20
中文摘要:
      自适应波束形成器容易受到运动干扰和观测方向偏差的影响,针对该问题提出了一种基于矩阵预滤波的零陷展宽稳健波束形成算法。首先分析了矩阵预滤波器在抗运动干扰时的适应性,并利用矩阵预滤波器在运动干扰所在区域形成凹槽。利用椭圆投影定理计算预滤波后的导向矢量不确定集,在新的导向矢量不确定集下利用稳健Capon波束形成算法(RCB)寻找最优导向矢量。仿真分析表明,和RCB算法相比,该算法不仅获得更高的输出信干噪比,还获得了预先设定的展宽零陷。
英文摘要:
      Adaptive beamformers are very easy to suffer severe performance degradation in the presence of look direction mismatches and moving interferences. To solve this problem, a robust beamformer with widen nulls is proposed. The usability of the matrix filter in suppressing moving interferences is analyzed firstly, and then, some nulls are formed in the sector of moving interferences with the proposed matrix filter. The steering vector uncertainty set via matrix filtering is calculated using the ellipsoidal calculus and used to construct constraints. Then the optimal steering vector is estimated using robust capon beamforming (RCB) algorithm. Simulation results show that, compared with RCB, the proposed algorithm offers not only higher signal-to-interference-plus-noise ratio (SINR), but also specified widen nulls.
DOI:10.11684/j.issn.1000-310X.2014.06.002
中文关键词: 稳健波束形成,矩阵预滤波,零陷展宽
英文关键词: Robust adaptive beamforming, Matrix pre-filter, Null-widen
基金项目:国家自然科学基金项目(面上项目,重点项目,重大项目);国家高技术研究发展计划(863计划);水声技术重点实验室基金项目;海军装备预研基金项目
作者单位E-mail
杨振 中国人民解放军91388部队 fanzhan@hrbeu.edu.cn 
范展* 哈尔滨工程大学水声工程学院 fanzhan@hrbeu.edu.cn 
吴文峰 哈尔滨工程大学水声工程学院 wuwenfeng@hrbeu.edu.cn 
摘要点击次数: 1911
全文下载次数: 1817
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