DocumentCode :
1140077
Title :
Two-Dimensional Adaptive Array Beamforming With Multiple Beam Constraints Using a Generalized Sidelobe Canceller
Author :
Lee, Ju-Hong ; Lee, Yung-Han
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
Volume :
53
Issue :
9
fYear :
2005
Firstpage :
3517
Lastpage :
3529
Abstract :
This paper deals with the problem of two-dimensional (2-D) adaptive array beamforming with multiple beam constraints (MBC) using a generalized sidelobe canceller (GSC). We present a method for the construction of signal blocking matrix required by the 2-D GSC. The resulting 2-D adaptive beamformer can provide almost the same performance as conventional 2-D adaptive beamformers based on a linearly constrained minimum variance (LCMV) criterion. The effectiveness of the proposed GSC is that the construction of the required signal blocking matrix requires only the computation of a few entries from analytical formulas. In comparison with conventional methods, the proposed technique gets rid of the computational complexity due to the eigendecomposition required for finding the 2-D signal blocking matrix. For dealing with the performance degradation due to coherent interference, we present a 2-D weighted spatial smoothing scheme to effectively alleviate the coherent jamming effect. Several simulation examples are provided for illustration and comparison.
Keywords :
adaptive antenna arrays; adaptive signal processing; antenna radiation patterns; array signal processing; eigenvalues and eigenfunctions; jamming; planar antenna arrays; smoothing methods; coherent interference; computational complexity; eigendecomposition; generalized sidelobe canceller; jamming effect; linearly constrained minimum variance criterion; multiple beam constraint; signal blocking matrix; two-dimensional adaptive array beamforming; weighted spatial smoothing scheme; Adaptive arrays; Array signal processing; Computational complexity; Degradation; Interference; Jamming; Signal analysis; Smoothing methods; Structural beams; Two dimensional displays; Adaptive beamforming; generalized sidelobe canceller; multiple beam constraint;
fLanguage :
English
Journal_Title :
Signal Processing, IEEE Transactions on
Publisher :
ieee
ISSN :
1053-587X
Type :
jour
DOI :
10.1109/TSP.2005.853155
Filename :
1495887
Link To Document :
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