最优冗余线阵欠定信号双重构DOA估计方法
TN971; 针对最小冗余线阵难以用于阵列设计的问题,设计了一种性能相近的最优冗余线阵,为实现相应阵列的欠定信号到达角(direction of arrival,DOA)估计,又提出了一种基于两次重构的快速协方差向量稀疏表示方法.该方法利用凸优化中最优解条件,实现了 Toeplitz协方差矩阵的快速高精度重构,进而基于构造的协方差向量稀疏表示模型,实现了欠定信号DOA估计.仿真结果证明,最优冗余线阵相较于其他稀疏线阵,耦合影响更低,测向精度更高,所提算法较同类算法DOA估计精度更高....
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| Published in | 系统工程与电子技术 Vol. 45; no. 1; pp. 49 - 55 |
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| Main Authors | , , , , |
| Format | Journal Article |
| Language | Chinese |
| Published |
空军预警学院,湖北 武汉430019%海军研究院,北京100161
2023
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1001-506X |
| DOI | 10.12305/j.issn.1001-506X.2023.01.07 |
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| Abstract | TN971; 针对最小冗余线阵难以用于阵列设计的问题,设计了一种性能相近的最优冗余线阵,为实现相应阵列的欠定信号到达角(direction of arrival,DOA)估计,又提出了一种基于两次重构的快速协方差向量稀疏表示方法.该方法利用凸优化中最优解条件,实现了 Toeplitz协方差矩阵的快速高精度重构,进而基于构造的协方差向量稀疏表示模型,实现了欠定信号DOA估计.仿真结果证明,最优冗余线阵相较于其他稀疏线阵,耦合影响更低,测向精度更高,所提算法较同类算法DOA估计精度更高. |
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| AbstractList | TN971; 针对最小冗余线阵难以用于阵列设计的问题,设计了一种性能相近的最优冗余线阵,为实现相应阵列的欠定信号到达角(direction of arrival,DOA)估计,又提出了一种基于两次重构的快速协方差向量稀疏表示方法.该方法利用凸优化中最优解条件,实现了 Toeplitz协方差矩阵的快速高精度重构,进而基于构造的协方差向量稀疏表示模型,实现了欠定信号DOA估计.仿真结果证明,最优冗余线阵相较于其他稀疏线阵,耦合影响更低,测向精度更高,所提算法较同类算法DOA估计精度更高. |
| Author | 王庚 陈昌孝 何翼 冯明月 李浩 |
| AuthorAffiliation | 空军预警学院,湖北 武汉430019%海军研究院,北京100161 |
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| Author_FL | WANG Geng HE Yi CHEN Changxiao LI Hao FENG Mingyue |
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| Author_xml | – sequence: 1 fullname: 王庚 – sequence: 2 fullname: 李浩 – sequence: 3 fullname: 何翼 – sequence: 4 fullname: 冯明月 – sequence: 5 fullname: 陈昌孝 |
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| Keywords | 稀疏重构 到达角估计 最优冗余线阵 |
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| Snippet | TN971; 针对最小冗余线阵难以用于阵列设计的问题,设计了一种性能相近的最优冗余线阵,为实现相应阵列的欠定信号到达角(direction of arrival,DOA)估计,又提出了一种基于两次重构的快速协方差向量稀疏表示方法.该方法利用凸优化中最优解条件,实现了... |
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| Title | 最优冗余线阵欠定信号双重构DOA估计方法 |
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