| Alpha稳定分布噪声环境下类M估计相关的DOA估计新算法 |
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| 引用本文： | 张金凤,邱天爽,宋爱民,唐洪,王娜.Alpha稳定分布噪声环境下类M估计相关的DOA估计新算法[J].通信学报,2013,34(5):8-78. |
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| 作者姓名： | 张金凤 邱天爽 宋爱民 唐洪 王娜 |
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| 作者单位： | 1. 大连理工大学 电子信息与电气工程学部，辽宁 大连 116024；2. 深圳大学 深圳市现代通信与信息处理重点实验室，广东 深圳 518060 |
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| 基金项目： | 国家自然科学基金资助项目（61172108, 61139001, 60902069） |
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| 摘 要： | 提出了一类适用于Alpha稳定分布随机变量的统计量—类M估计相关（MELC），通过构造阵列输出的类M估计相关矩阵，提出了适用于Alpha稳定分布噪声环境下的波达方向（DOA）估计新算法，即MELC-MUSIC算法。仿真实验表明，在Alpha稳定分布噪声环境下，MELC-MUSIC算法在抗噪声特性、多源信号分辨性以及对不同形式信号（圆对称信号或非圆对称信号）的适应性方面获得比基于分数低阶统计量（FLOS）的MUSIC方法更好的估计性能。
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| 关 键 词： | M估计 波达方向估计 分数低阶统计量 MUSIC算法 |
M-estimate like correlation based algorithm for direction of
arrival estimation under alpha-stable environments |
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| Jin-feng ZHANG,Tian-shuang QIU,Ai-min SONG,Hong TANG,Na WANG.M-estimate like correlation based algorithm for direction of
arrival estimation under alpha-stable environments[J].Journal on Communications,2013,34(5):8-78. |
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| Authors: | Jin-feng ZHANG Tian-shuang QIU Ai-min SONG Hong TANG Na WANG |
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| Affiliation: | 1. Faculty of Electronic Information and Electrical Engineering,Dalian University of Technology,Dalian 116024,China;2. Shenzhen Key Lab of Advanced Communications and Information Processing,Shenzhen University,Shenzhen 518060,China |
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| Abstract: | A novel class of bounded statistics, namely, the M-estimate like correlation (MELC) for independently identical distributed symmetric alpha-stable ( ) random variables was defined. Based on the MELC matrix for the array sensor outputs, a new algorithm for direction of arrival (DOA) estimation in the presence of complex noise was proposed. The comprehensive Monte-Carlo simulation results show that the MELC-MUSIC algorithm not only outperforms the fractional lower order statistics (FLOS) based MUSIC algorithms under low SNR conditions and multi-source signals environment, but also is robust with circular and noncircular signals. |
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| Keywords: | M-estimate direction of arrival estimation fractional lower order statistics MUSIC algorithm |
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