作　　者： ;

机构地区： 中国人民解放军

出　　处： 《移动通信》 2020年第3期43-48,共6页

摘　　要： 为了实现对平行互质阵列的孔径扩展,提升信号波达方向估计性能,基于平行互质阵列,首先给出一种改进阵列结构,然后采用共轭空时增广的思想,得到一种对称的平行互质虚拟阵列,由于共轭空时增广联合利用了信号在空间、时间的特征,使得扩展的虚拟阵列比现有方法具有更多的虚拟阵元数和自由度,最后利用稀疏重建方法,实现二维波达方向的估计。仿真实验均验证了所提出的方法在估计精度上的有效性。 In order to achieve the expansion of the parallel co-prime array,and improve performance of the direction-of-arrival (DOA) estimation,this paper firstly proposes an improved array structure based on the parallel co-prime array,and then the symmetry parallel co-prime virtual array is obtained by utilizing the idea of conjugate spatial-temporal augmentation.By jointly utilizing the signal characteristics of space and time domain based on the conjugate spatial-temporal augmentation,the number of virtual array elements and degrees of freedom can be further improved.Finally,the sparse reconstruction method is used to estimate the two-dimensional (2-D) direction of arrival.Simulation experiments verifies the effectiveness of the proposed method in estimating accuracy.

关 键 词： 二维波达方向估计 平行互质阵列 共轭空时增广 虚拟阵列

领　　域： []