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A new source number estimation method based on the beam eigenvalue 被引量：2

A new source number estimation method based on the beam eigenvalue
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摘要 Most source number estimation methods based on the eigenvalues are decomposed by covariance matrix in MUSIC algorithm. To develop the source number estimation method which has lower signal to noise ratio and is suitable to both correlated and uncorrelated impinging signals, a new source number estimation method called beam eigenvalue method (BEM) is proposed in this paper. Through analyzing the space power spectrum and the correlation of the line array, the covariance matrix is constructed in a new way, which is decided by the line array shape when the signal frequency is given. Both of the theory analysis and the simulation results show that the BEM method can estimate the source number for correlated signals and can be more effective at lower signal to noise ratios than the normal source number estimation methods. Most source number estimation methods based on the eigenvalues are decomposed by covariance matrix in MUSIC algorithm. To develop the source number estimation method which has lower signal to noise ratio and is suitable to both correlated and uncorrelated impinging signals, a new source number estimation method called beam eigenvalue method （BEM） is proposed in this paper. Through analyzing the space power spectrum and the correlation of the line array, the covariance matrix is constructed in a new way, which is decided by the line array shape when the signal frequency is given. Both of the theory analysis and the simulation results show that the BEM method can estimate the source number for correlated signals and can be more effective at lower signal to noise ratios than the normal source number estimation methods.
作者 JIANG Lei CAI Ping YANG Juan WANG Yi-ling XU Dan
机构地区 College of Underwater Acoustic Engineering
出处 《Journal of Marine Science and Application》 2007年第1期41-46,共6页 船舶与海洋工程学报（英文版）
关键词 声源数 估计方法 DOA 波束本征值 水声信道 source number estimation DOA estimation beam eigenvalue MUSIC
分类号 TN911.7 [电子电信—通信与信息系统] TB561 [交通运输工程—水声工程]
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参考文献14

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同被引文献22

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引证文献2

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Journal of Marine Science and Application
2007年 第1期

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