Robust Adaptive Beamforming against Signal Steering Vector Mismatch and Jammer Motion
Joint Authors
Li, Wenxing
Li, Yingsong
Mao, Xiaojun
Sun, Yaxiu
Zhai, Zhuqun
Source
International Journal of Antennas and Propagation
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-07-06
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
Since adaptive beamformer suffers from output performance degradation in the presence of interference nonstationarity and signal steering vector mismatch, a novel robust null broadening adaptive beamforming is proposed.
The proposed method is realized by the combination of projection transform and diagonal loading techniques.
First, a new projection matrix with null broadening ability is constructed and then projects the array received data onto the projection matrix.
With the diagonal loading technique, a new sample covariance matrix is obtained.
The theoretical analysis shows that the projection transform operation can expand the incident direction of the interference and improve orthogonality between the signal-plus-interference and the noise subspaces; thus the proposed beamformer can effectively broaden the jammer null and enhance the null depth.
The analytical expressions of the proposed algorithm are also provided, which are efficient and easily solved.
Simulation results are presented and demonstrated that the proposed beamformer can provide strong robustness against signal steering vector mismatch and jammer motion.
American Psychological Association (APA)
Mao, Xiaojun& Li, Wenxing& Li, Yingsong& Sun, Yaxiu& Zhai, Zhuqun. 2015. Robust Adaptive Beamforming against Signal Steering Vector Mismatch and Jammer Motion. International Journal of Antennas and Propagation،Vol. 2015, no. 2015, pp.1-12.
https://search.emarefa.net/detail/BIM-1065171
Modern Language Association (MLA)
Mao, Xiaojun…[et al.]. Robust Adaptive Beamforming against Signal Steering Vector Mismatch and Jammer Motion. International Journal of Antennas and Propagation No. 2015 (2015), pp.1-12.
https://search.emarefa.net/detail/BIM-1065171
American Medical Association (AMA)
Mao, Xiaojun& Li, Wenxing& Li, Yingsong& Sun, Yaxiu& Zhai, Zhuqun. Robust Adaptive Beamforming against Signal Steering Vector Mismatch and Jammer Motion. International Journal of Antennas and Propagation. 2015. Vol. 2015, no. 2015, pp.1-12.
https://search.emarefa.net/detail/BIM-1065171
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1065171