Title :
Effectiveness of the Wideband Minimum Variance Direction Finding Method in Nonuniform Noise
Author :
Wen, Fei ; Wan, Qun ; Hua, Jiyan
Author_Institution :
Sch. of Electron. Eng., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
The minimum variance (MV) approach is prevalent and useful in estimating the direction-of-arrival (DOA) of a broadband source using an array, and it has been well studied in the case of uniform sensor noise. In this paper, it is evaluated in another case of nonuniform white noise. We show that, compared to the temporal maximum-likelihood (ML) estimator, the MV estimator can give optimal performance while avoids the estimation of the nonuniform noise variances.
Keywords :
array signal processing; direction-of-arrival estimation; maximum likelihood estimation; white noise; DOA; ML estimator; MV approach; broadband source; direction-of-arrival; nonuniform noise variances; nonuniform white noise; optimal performance; temporal maximum-likelihood estimator; uniform sensor noise; wideband minimum variance direction finding method; Arrays; Covariance matrix; Direction of arrival estimation; Maximum likelihood estimation; Noise; Wideband; array signal processing; direction-of-arrival (DOA) estimation; minimum variance (MV); nonuniform noise;
Conference_Titel :
Computer and Information Technology (CIT), 2012 IEEE 12th International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4673-4873-7
DOI :
10.1109/CIT.2012.72
