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阵元非均匀高斯白噪声背景下的近场声源定位研究

Keywords: 声源定位,MUSIC算法,近场源,非均匀噪声

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Abstract:

为解决非均匀高斯白噪声背景下常规近场声源定位算法精度低的问题,提出一种基于噪声协方差矩阵估计的近场声源定位,预白化MUSIC算法,该方法首先从阵列输出数据中估计出噪声协方差矩阵,再利用估计出的噪声协方差矩阵预白化阵列协方差矩阵,从而提高常规算法的估计性能.仿真结果表明,在非均匀高斯白噪声背景下的近场声源定位中,预白化MUSIC算法定位性能高于常规MUSIC和Capon算法的估计性能.

References

[1]  Harry L Van Trees. Optimum array processing[M]. New York: John Wiley and Sons, Inc, 2002. [2] Nagesha V, Kay S. Maximum likelihood estimation for array processing in colored noise[J]. IEEE Transactions on Signal Processing, 1996,44(2):169-180. [3] Friedlander B, Weiss A J. Direction finding using noise covariance modeling [J]. IEEE Transactions on Signal Processing, 1995,43(7):1557-1567. [4] Michael Schoor, Bin Yang. Subspace based DOA estimation in the presence of correlated signals and model errors[C].ICASSP 2009: 2161-2164. [5] Zhou C G, Haber F. The resolution threshold of MUSIC with unknown spatially colored noise[J],IEEE Trans. SP, 1993, 41(1):511-516. [6] 金勇,黄建国,张立杰.宽带信号近似最大似然方位估计快速算法[J].航空学报,2008,29(5):1264-1268. [7] Araki S, Sawada H, Mukai R, et al. DOA Estimation for multiple sparse sources with normalized observation vector clustering[C].ICASSP 2006:533-536. [8] WU Yun-tao, HOU Chao-huan, LIAO Gui-sheng. Direction-of-arrival estimation in the presence of unknown non-uniform noise fields[J]. IEEE Journal of oceanic engineering, 2006,31(2):504-510.

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