Summary
the 2014 International Symposium on Nonlinear Theory and its Applications
2014
Session Number:A2L-B
Session:
Number:A2L-B1
Modified Capon Beamformer for High-Resolution Direction-of-Arrival Estimation
Changnong Liu, Jingmin Xin, Yoshifumi Nishio, Nanning Zheng, Akira Sano,
pp.116-119
Publication Date:2014/9/14
Online ISSN:2188-5079
Summary:
In this paper, a modified Capon beam-former (MCB) is proposed for estimating the direction-of- arrivals (DOAs) of multiple noncoherent narrowband signals, where the computationally expensive eigendecomposition is not required. Further the relation between this nonparametric estimator and the well-known parametric method called the multiple signal classification (MUSIC) is studied, where it is clarified that by increasing the power of the inverse of the array covariance matrix, the resolution of the MCB can be improved significantly compared with the standard Capon beamformer (SCB) and as better as that of MUSIC regardless of the signal-to-noise ratio (SNR). The effectiveness of the proposed MCB and the performance analysis are verified through numerical examples.