幅度相位误差条件下的互质阵列DOA估计方法

TN911.23; 针对基于互质阵列的欠定波达方向(direction of arrival,DOA)估计方法在阵元幅相误差条件下性能急剧下降的问题,提出一种基于校正阵元的互质阵列DOA估计方法.首先,将阵列接收数据分解为两个子阵数据,基于校正阵元对子阵分别进行幅相误差估计,并将子阵幅相误差排序重组.然后,对接收数据协方差矩阵进行误差补偿并扩展为高维的Toeplitz矩阵.最后,基于矩阵填充理论对高维协方差矩阵进行空洞填充,结合求根多重信号分类(root multiple signal classification,root-M USIC)算法进行DOA估计.理论分析和仿真结果表明,该方法可以...

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Published in系统工程与电子技术 Vol. 43; no. 12; pp. 3488 - 3494
Main Authors 孙兵, 阮怀林, 吴晨曦, 吴世龙, 钟华
Format Journal Article
LanguageChinese
Published 国防科技大学电子对抗学院,安徽合肥230037 01.12.2021
Subjects
波达方向估计;互质阵列;幅相误差;校正阵元;误差补偿
Online AccessGet full text
ISSN1001-506X
DOI10.12305/j.issn.1001-506X.2021.12.09

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Abstract TN911.23; 针对基于互质阵列的欠定波达方向(direction of arrival,DOA)估计方法在阵元幅相误差条件下性能急剧下降的问题,提出一种基于校正阵元的互质阵列DOA估计方法.首先,将阵列接收数据分解为两个子阵数据,基于校正阵元对子阵分别进行幅相误差估计,并将子阵幅相误差排序重组.然后,对接收数据协方差矩阵进行误差补偿并扩展为高维的Toeplitz矩阵.最后,基于矩阵填充理论对高维协方差矩阵进行空洞填充,结合求根多重信号分类(root multiple signal classification,root-M USIC)算法进行DOA估计.理论分析和仿真结果表明,该方法可以实现互质阵列的幅相误差估计,并通过误差补偿有效恢复幅相误差条件下的互质阵列DOA估计性能,提高估计精度.
AbstractList TN911.23; 针对基于互质阵列的欠定波达方向(direction of arrival,DOA)估计方法在阵元幅相误差条件下性能急剧下降的问题,提出一种基于校正阵元的互质阵列DOA估计方法.首先,将阵列接收数据分解为两个子阵数据,基于校正阵元对子阵分别进行幅相误差估计,并将子阵幅相误差排序重组.然后,对接收数据协方差矩阵进行误差补偿并扩展为高维的Toeplitz矩阵.最后,基于矩阵填充理论对高维协方差矩阵进行空洞填充,结合求根多重信号分类(root multiple signal classification,root-M USIC)算法进行DOA估计.理论分析和仿真结果表明,该方法可以实现互质阵列的幅相误差估计,并通过误差补偿有效恢复幅相误差条件下的互质阵列DOA估计性能,提高估计精度.
Author 吴世龙
阮怀林
吴晨曦
钟华
孙兵
AuthorAffiliation 国防科技大学电子对抗学院,安徽合肥230037
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WU Chenxi
ZHONG Hua
WU Shilong
RUAN Huailin
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