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用于非圆信号二维测向的扩展Root-MUSIC算法 预览 被引量:2

Extended 2-D Root-MUSIC for Noncircular Signals
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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行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。 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 subarray 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.
作者 刘剑 于红旗 黄知涛 周一宇 LIU Jian YU Hong-qi HUANG Zhi-tao ZHOU Yi-yu( 1. School of Electronic Science and Engineering, National Univ. of Defense Technology, Changsha ,410073, China; 2. Telecommunication Engineering College ,Airforce Engineering Univ. ,710077, China)
出处 《信号处理》 CSCD 北大核心 2008年第5期 798-801,共4页 Signal Processing
基金 国家自然科学基金资助项目(60502040)
关键词 阵列信号处理 二维测向 非圆信号 ROOT-MUSIC array signal processing 2-D direction finding noncircular signals root-MUSIC
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参考文献9

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共引文献139

同被引文献26

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