A new estimation algorithm based on the criterion of eigenvalue transformation for the number of coherent sources

Author

Han, Sen ; Tang, Liangrui ; Yang, Xue

Author_Institution

Sch. of Electr. & Electron. Eng., North China Electr. Power Univ., Beijing, China

fYear

2010

fDate

24-26 Sept. 2010

Firstpage

1005

Lastpage

1009

Abstract

A new algorithm which can detect the number of sources accurately in the case of a high degree of coherence and small difference between incident angles is proposed in this paper. The algorithm is based on the criterion of eigenvalue transformation of the covariance Matrix. Firstly, the output covariance matrix is decohered with toeplitz matrix, and then the number of coherent sources is estimated precisely through the appropriate threshold calculated by the new criterion of eigenvalue transformation. Simulations demonstrate the effectiveness of the algorithm.

Keywords

covariance matrices; direction-of-arrival estimation; eigenvalues and eigenfunctions; coherent sources; covariance matrix; direction-of-arrival estimation; eigenvalue transformation; incident angle; source estimation; Arrays; Covariance matrix; Eigenvalues and eigenfunctions; Error probability; Estimation; Signal processing algorithms; Signal to noise ratio; coherent signals; eigenvalue; source estimation;

fLanguage

English

Publisher

ieee

Conference_Titel

Network Infrastructure and Digital Content, 2010 2nd IEEE International Conference on

Conference_Location

Beijing

Print_ISBN

978-1-4244-6851-5

Type

conf

DOI

10.1109/ICNIDC.2010.5657950

Filename

5657950