Title :
Robust capon beamformer based on direction search
Author :
Lu, Z.X. ; Gao, M.G. ; Li, Yue Juan
Author_Institution :
Radar Res. Lab., Beijing Inst. of Technol., Beijing, China
Abstract :
In the presence of pointing errors, a direction search based robust Capon beamformer is proposed. The direction of the desired signal is first estimated by searching for the local maximum of the array output power using the first-order Taylor series expansion of the array steering vector, and then the robust Capon beamformer is developed with the estimated direction as the presumed one.
Keywords :
array signal processing; search problems; array output power; array steering vector; direction search method; first-order Taylor series expansion; pointing errors; robust Capon beamformer;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2012.3211
