Robust Adaptive Beamforming by Self-Correction of Look Direction Errors

Yang-Ho CHOI  

IEICE TRANSACTIONS on Communications   Vol.E85-B   No.3   pp.694-697
Publication Date: 2002/03/01
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Antenna and Propagation
adaptive array,  eigenstructure-based beamformer,  pointing error,  

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Eigenstructure-based beamformers suffer form performance degradation due to pointing errors when the number of the incident signals is incorrectly detected or when the desired signal is much stronger than the interferences. We present a robust beamformer with the self-correction of look direction errors, based on the Newton method. Even though there are errors in the detection of the incident signal number as well as in the presumed look direction, it can achieve optimum performance with no errors.