| 基于盲源分离算法的阵列信号波达方向-频率估计 |
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| 引用本文： | 肖文书,张兴敢.基于盲源分离算法的阵列信号波达方向-频率估计[J].南京大学学报(自然科学版),2009(4). |
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| 作者姓名： | 肖文书 张兴敢 |
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| 作者单位： | 南京电子技术研究所;南京大学电子科学与工程系;毫米波国家重点实验室; |
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| 基金项目： | 毫米波国家重点实验室开放课题(K200819) |
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| 摘 要： | 盲信号处理已成为近年信号处理和神经网络热点领域,主要用于语言信号处理,应用于雷达信号处理并不多见.确定空间辐射源的波达方向(DOA)和频率是雷达阵列信号处理的基本问题之一,近20年来许多学者提出了性能各异的算法,其中有代表性的是多信号分类法和旋转不变技术的参数估计法.近年来,越来越多文献将盲源分离算法应用到阵列信号处理中,开辟了一条DOA估计的新道路.本文首先给出了一种用来盲分离复数信号的盲源分离算法,结合该算法,提出了可同时估计波达方向、频率的波达方向-频率盲估计算法.盲源分离算法是基于负熵的快速定点算法,不需要给出复数信号的概率密度函数,具有收敛速度快,鲁棒性强等特点.本文证明了波达方向-频率盲估计算法的收敛性.仿真研究表明新的波达角估计算法的特点:1)估计算法是有效并且鲁棒的;2)估计算法能从含噪声的阵列接收信号中同时估计出辐射源波达方向和频率;3)估计算法能将雷达杂波和目标回波分离.
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| 关 键 词： | 波达方向-频率估计 阵列信号处理 盲源分离 快速定点独立分量分析 |
Direction-of-arrival and frequency estimation in array signal processing based on blind source separation |
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| Xiao Wen-Shu,Zhang Xing-Gan.Direction-of-arrival and frequency estimation in array signal processing based on blind source separation[J].Journal of Nanjing University: Nat Sci Ed,2009(4). |
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| Authors: | Xiao Wen-Shu Zhang Xing-Gan |
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| Institution: | 1.Nanjing Research Institute of Electronics Technology;Nanjing;210013;China;2.Department of Electronics Science and Engineering;Nanjing University;210093;3.State Key Laboratory of Millimeter Waves;210096;China |
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| Abstract: | In recent years,blind signal separation(BSS) has already become a hot field of signal processing and neural network,but it has been mainly applied to speech signal processing,and the application of BSS to radar signal processing is rare.Estimating the direction-of-arrival and frequency is the basic issue of array signal processing.Recently,BSS has already become a hot field of signal processing and neural network.Over the past 20 years,different algorithms withdifferent performance have been developed,such ... |
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| Keywords: | direction-of-arrival and frequency estimation array signal processing blind source separation fast fixed-point independent component analysis algorithm |
| 本文献已被 CNKI 等数据库收录！ |
