| 基于信号非圆特性的源数估计改进算法 |
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| 引用本文： | 任玮,吴瑛,张弛.基于信号非圆特性的源数估计改进算法[J].信息工程大学学报,2008,9(4). |
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| 作者姓名： | 任玮 吴瑛 张弛 |
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| 作者单位： | 信息工程大学,信息工程学院,河南,郑州,450002 |
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| 摘 要： | 利用信号的非圆特性,提出了一种信源个数估计的改进方法。非圆信号的椭圆协方差非零,因此同时利用协方差矩阵和椭圆协方差矩阵能够获得更多的信息,可以更精确地对信源个数进行估计。仿真实验表明,这种改进算法在低信噪比情况下仍然能够准确估计信源的个数,而且角度分辨率高。
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| 关 键 词： | 信源个数 非圆信号 阵列信号处理 |
Novel Estimator of Numbers of Sources Based on Non-Circular Property |
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| REN Wei,WU Ying,ZHANG Chi.Novel Estimator of Numbers of Sources Based on Non-Circular Property[J].Journal of Information Engineering University,2008,9(4). |
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| Authors: | REN Wei WU Ying ZHANG Chi |
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| Abstract: | Based on non-circular property,a novel technique is proposed to estimate the number of sources.Since the elliptic covariance of the non-circular sources is non-zero,it can get more information from the covariance matrix and elliptic covariance matrix,and estimate the number of sources more precisely.It is shown in the simulations that this improved method can handle the problem in lower SNR than the other methods,and the angular resolution is better. |
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| Keywords: | number of sources non-circular signals array signal processing |
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