Title :
Capon beamformer for acoustic vector sensor arrays using biquaternions
Author :
Gou, Xiaoming ; Xu, Yougen ; Liu, ZhiWen ; Gong, Xiaofeng
Author_Institution :
Sch. of Inf. & Electron., Beijing Inst. of Technol., Beijing, China
Abstract :
Using an acoustic vector sensor array, adaptive beamforming is addressed based on hypercomplex algebra. To utilize the minimum-variance distortionless response beamforming in the biquaternion domain, a variant of Capon beamformer named Biquaternion Capon (BQ-Capon) is proposed. Simulations show that the BQ-Capon beamformer outperforms the conventional long vector Capon beamformer with the convergence rate, and is less sensitive to the inaccuracy of the steering vector of the signal-of-interest (SOI) than the latter.
Keywords :
acoustic signal processing; acoustic transducer arrays; algebra; array signal processing; sensor arrays; vectors; SOI; acoustic vector sensor arrays; adaptive BQ-Capon beamformer; adaptive biquaternion Capon beamformer; hypercomplex algebra; long vector Capon beamformer; minimum-variance distortionless response beamforming; signal-of-interest; steering vector; Helium; Capon; beamforming; biquaternion; robustness;
Conference_Titel :
Awareness Science and Technology (iCAST), 2011 3rd International Conference on
Conference_Location :
Dalian
Print_ISBN :
978-1-4577-0887-9
DOI :
10.1109/ICAwST.2011.6163090