| 用于非圆信号二维测向的扩展Root-MUSIC算法 |
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| 引用本文： | 刘剑,于红旗,黄知涛,周一宇.用于非圆信号二维测向的扩展Root-MUSIC算法[J].信号处理,2008,24(5). |
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| 作者姓名： | 刘剑 于红旗 黄知涛 周一宇 |
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| 作者单位： | 1. 国防科技大学电子科学与工程学院,湖南长沙,410073;空军工程大学,电讯工程学院,陕西西安,710077
2. 国防科技大学电子科学与工程学院,湖南长沙,410073 |
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| 摘 要： | 利用双平行线阵的阵列结构,提出了用于非圆信号二维测向的扩展root-MUSIC(ERM)算法.ERM算法估计得到的俯仰角与方位角一一对应,自动配对,无需搜索,其可测向信号数大于子阵阵元数,方位测角精度优于同样基于双平|亍线阵的二维测向波达方向矩阵法(DOAM),俯仰测角精度在低信噪比下优于DOAM算法,俯仰角兼并时算法仍有效.
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| 关 键 词： | 阵列信号处理 二维测向 非圆信号 |
Extended 2-D Root-MUSIC for Noncircular Signals |
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| LIU Ban,YU Hong-qi,HUANG Zhi-tao,ZHOU Yi-yu.Extended 2-D Root-MUSIC for Noncircular Signals[J].Signal Processing,2008,24(5). |
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| Authors: | LIU Ban YU Hong-qi HUANG Zhi-tao ZHOU Yi-yu |
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| Abstract: | Herein,a novel 2-D direction finding algorithm for noncircular signals using two parallel uniform linear arrays (ULAs) called extended root-MUSIC (ERM) algorithm is presented.The method is a searching-free algorithm.The azimuth and elevation angles estimated by ERM are paired automatically.The number of resolved sources by ERM can be larger than the number of suberray sensors. The azimuth angle precision by ERM is better than the DOA matrix (DOAM) algorithm which is a 2-D direction finding algorithm also using two parallel ULAs and the elevation angle precision is better than DOAM in the case of relatively lower SNR. |
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| Keywords: | root-MUSIC |
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