A harmonic retrieval method in colored non-Gaussian noise based on cumulant projection

被引:0
作者
Wang, HZ [1 ]
Zhang, Y [1 ]
Wang, SX [1 ]
Shi, DC [1 ]
机构
[1] Jilin Inst Technol, Changchun 130012, Peoples R China
来源
ISTM/99: 3RD INTERNATIONAL SYMPOSIUM ON TEST AND MEASUREMENT | 1999年
关键词
D O I
暂无
中图分类号
O42 [声学];
学科分类号
070206 ; 082403 ;
摘要
This paper addresses the harmonic retrieval problem in colored non-Gaussian noise and proposes a cumulant projection method for harmonic retrieval in colored linear non-Gaussian noise. At first, a higher order cumulant projection theorem of the complex linear non-Gaussian process is given. Using this theorem, we can obtain the correlation of the colored non-Gaussian noise from the fourth-order cumulant of the complex noisy measurements which are formed by Hilbert transform. Then the vector space is prewhited by finding a generalized eigenvalue problem. Finally, the harmonic parameters are retrieved by using MUSIC method. This method releases the asymmetrically-distributed assumption of the non-Gaussian noise and is also efficient when there is quadratic phase coupling in harmonics. Simulation examples are presented to support the result of this paper.
引用
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页码:667 / 670
页数:4
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