基于均匀圆阵模式空间和多重旋转不变子空间算法的完备二维DOA估计算法

发布时间：2018-02-07 09:26

本文关键词： 二维波达方向估计均匀圆阵多重旋转不变子空间算法模式空间算法　出处：《系统工程与电子技术》2017年12期 　论文类型：期刊论文

【摘要】：为了在低运算量下提高均匀圆阵中二维测角的精度,提出一种基于圆阵模式空间和多重旋转不变子空间算法的二维波达方向估计算法。首先利用模式空间算法将均匀圆阵等效为虚拟均匀线阵,并利用贝塞尔函数的递推性质推导此种情况下阵列的旋转不变特性。然后根据虚拟线阵的结构提出一种简便有效的子阵划分办法,在此基础上得出阵列的多重旋转不变方程,并利用多重最小二乘准则得出其完备解,从而完成对信号二维到达角的估计,仿真实验验证了算法的有效性。
[Abstract]:In order to improve the accuracy of two dimensional angle measurement in uniform circular array, A two-dimensional DOA estimation algorithm based on circular array mode space and multiple rotation invariant subspace algorithm is proposed. Firstly, the uniform circular array is equivalent to a virtual uniform linear array by using the mode space algorithm. By using the recursive property of Bessel function, the rotation invariant property of the array is deduced. Then a simple and effective subarray partition method is proposed according to the structure of the virtual linear array, and on this basis, the multiple rotation invariant equations of the array are obtained. The complete solution is obtained by using the multiple least square criterion, and the 2-D arrival angle of the signal is estimated. The simulation results show that the algorithm is effective.
【作者单位】：国防科技大学电子科学与工程学院;
【分类号】：TN911.23

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