Novel Diagonal Reloading Based Direction of Arrival Estimation in Unknown Non-Uniform Noise
Joint Authors
Hu, Guoping
Feng, Ziang
Shi, Junpeng
Zhou, Hao
Source
Mathematical Problems in Engineering
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-05-30
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
Nested array can expand the degrees of freedom (DOF) from difference coarray perspective, but suffering from the performance degradation of direction of arrival (DOA) estimation in unknown non-uniform noise.
In this paper, a novel diagonal reloading (DR) based DOA estimation algorithm is proposed using a recently developed nested MIMO array.
The elements in the main diagonal of the sample covariance matrix are eliminated; next the smallest MN-K eigenvalues of the revised matrix are obtained and averaged to estimate the sum value of the signal power.
Further the estimated sum value is filled into the main diagonal of the revised matrix for estimating the signal covariance matrix.
In this case, the negative effect of noise is eliminated without losing the useful information of the signal matrix.
Besides, the degrees of freedom are expanded obviously, resulting in the performance improvement.
Several simulations are conducted to demonstrate the effectiveness of the proposed algorithm.
American Psychological Association (APA)
Zhou, Hao& Hu, Guoping& Shi, Junpeng& Feng, Ziang. 2018. Novel Diagonal Reloading Based Direction of Arrival Estimation in Unknown Non-Uniform Noise. Mathematical Problems in Engineering،Vol. 2018, no. 2018, pp.1-9.
https://search.emarefa.net/detail/BIM-1206646
Modern Language Association (MLA)
Zhou, Hao…[et al.]. Novel Diagonal Reloading Based Direction of Arrival Estimation in Unknown Non-Uniform Noise. Mathematical Problems in Engineering No. 2018 (2018), pp.1-9.
https://search.emarefa.net/detail/BIM-1206646
American Medical Association (AMA)
Zhou, Hao& Hu, Guoping& Shi, Junpeng& Feng, Ziang. Novel Diagonal Reloading Based Direction of Arrival Estimation in Unknown Non-Uniform Noise. Mathematical Problems in Engineering. 2018. Vol. 2018, no. 2018, pp.1-9.
https://search.emarefa.net/detail/BIM-1206646
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1206646