三平行线阵中基于改进传播算子的二维DOA估计方法

发布时间：2018-06-19 13:41

  本文选题：二维波达方向估计 + 三平行线阵　； 参考：《信号处理》2016年12期

【摘要】：提出了一种三平行线阵中基于改进传播算子的二维波达方向估计方法。该方法针对三平行阵列的结构特点,利用三平行线阵中两个相互垂直的双平行线阵,分别构造一个扩展传播矩阵,求得旋转矩阵。然后根据三平行线阵的特性,对分别得到的旋转矩阵进行配对。最后利用配对后的旋转矩阵,联合估计信号的方位角和俯仰角。该方法当俯仰角在70°~90°之间时不会出现角度估计失效问题,充分利用了所有阵元信息,提高了角度估计性能,而且具有更低的计算复杂度。仿真验证了提出方法的有效性。
[Abstract]:A two-dimensional DOA estimation method based on improved propagation operator in three parallel linear arrays is proposed. According to the structural characteristics of the three parallel arrays, an extended propagation matrix is constructed and the rotation matrix is obtained by using two vertical double parallel arrays in the three parallel arrays. Then the rotation matrix is paired according to the characteristics of the three parallel arrays. Finally, by using the paired rotation matrix, the azimuth and pitch angles of the signal are jointly estimated. When the pitch angle is between 70 掳and 90 掳, the problem of angle estimation failure will not occur, which makes full use of all element information, improves the performance of angle estimation, and has lower computational complexity. Simulation results show the effectiveness of the proposed method.
【作者单位】： 天津大学电子信息工程学院;
【基金】：天津市科技兴海项目(KJXH2011-2)
【分类号】：TN911.7
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本文编号：2040073