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
Main Authors 王庚, 李浩, 何翼, 冯明月, 陈昌孝
Format Journal Article
LanguageChinese
Published 空军预警学院,湖北 武汉430019%海军研究院,北京100161 2023
Subjects
稀疏重构
到达角估计
最优冗余线阵
Online AccessGet full text
ISSN1001-506X
DOI10.12305/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.
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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HE Yi
CHEN Changxiao
LI Hao
FENG Mingyue
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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...
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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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