TY - GEN
T1 - Derivative constrained Noncircularity-rate Maximization robust beamforming
AU - Ma, Jingyan
AU - Liu, Zhiwen
AU - Xu, Yougen
AU - Gou, Xiaoming
PY - 2013
Y1 - 2013
N2 - This paper proposes an extension of the NOncircularity Rate Maximization (NORM) beamformer that takes into account noncircular interferences. The main idea of the new approach is to utilize the spatial diversity and noncircularity dissimilarity between the desired signal and interferences plus noise simultaneously. For this purpose, the weight vector is designed by maximizing the non-circularity rate of desired signal with imposing derivative constraints on the interference directions. The proposed derivative constrained NORM algorithm could broaden the width of pattern null, therefore it provides robustness in the presence of noncircular interferences. Besides that, the new method could also be adjusted to apply in rapidly moving jammer environments, without the requirement of desired signal-free sample data. Numerical examples are included to illustrate the performance of the proposed beamformer.
AB - This paper proposes an extension of the NOncircularity Rate Maximization (NORM) beamformer that takes into account noncircular interferences. The main idea of the new approach is to utilize the spatial diversity and noncircularity dissimilarity between the desired signal and interferences plus noise simultaneously. For this purpose, the weight vector is designed by maximizing the non-circularity rate of desired signal with imposing derivative constraints on the interference directions. The proposed derivative constrained NORM algorithm could broaden the width of pattern null, therefore it provides robustness in the presence of noncircular interferences. Besides that, the new method could also be adjusted to apply in rapidly moving jammer environments, without the requirement of desired signal-free sample data. Numerical examples are included to illustrate the performance of the proposed beamformer.
KW - Array signal processing
KW - derivative constrained
KW - moving jammers
KW - noncircular
KW - robust beamforming
UR - http://www.scopus.com/inward/record.url?scp=84894319937&partnerID=8YFLogxK
U2 - 10.1109/TENCON.2013.6718931
DO - 10.1109/TENCON.2013.6718931
M3 - Conference contribution
AN - SCOPUS:84894319937
SN - 9781479928262
T3 - IEEE Region 10 Annual International Conference, Proceedings/TENCON
BT - 2013 IEEE International Conference of IEEE Region 10, IEEE TENCON 2013 - Conference Proceedings
T2 - 2013 IEEE International Conference of IEEE Region 10, IEEE TENCON 2013
Y2 - 22 October 2013 through 25 October 2013
ER -