| 一种基于平行互质阵列时空扩展的二维波达方向估计 |
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| 引用本文： | 赵慧,赵晶,曾伟.一种基于平行互质阵列时空扩展的二维波达方向估计[J].移动通信,2020(3):43-48. |
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| 作者姓名： | 赵慧 赵晶 曾伟 |
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| 作者单位： | 中国人民解放军75841部队;华南理工大学电子与信息学院 |
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| 基金项目： | 水声技术重点实验室开放基金资助(SSKF2018009)。 |
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| 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。
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| 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 |
2-D DOA Estimation Method Based on the Spatial-temporal Augmentation of Parallel Co-prime Array |
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| ZHAO Hui,ZHAO Jing,ZENG Wei.2-D DOA Estimation Method Based on the Spatial-temporal Augmentation of Parallel Co-prime Array[J].Mobile Communications,2020(3):43-48. |
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| Authors: | ZHAO Hui ZHAO Jing ZENG Wei |
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| Affiliation: | (Chinese People's Liberation Army 75841,Changsha 410000,China;School of Electronic and Information Engineering,South China University of Technology,Guangzhou 510640,China) |
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| Abstract: | 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. |
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| Keywords: | two-dimensional direction of arrival estimation parallel co-prime array conjugate spatial-temporal augmentation virtual array |
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