Robust Adaptive Beamforming Algorithm based on an Enhanced Diagonal Loading Method and Steering Vector Estimation

In this paper, a robust adaptive beamformer is proposed by utilizing an enhanced diagonal loading method and steering vector estimation. The enhanced diagonal loading matrix, which related to the sample covariance matrix, is introduced to enhance the ratio of signal-to-interference-plus-noise (SINR) for the robust adaptive beamformer. The new constrained optimization problem is constructed, and it does well in reducing the array steering vector error. Simulations, compared with other robust adaptive beamformers, show an obvious advantage of proposed algorithm.

[1]  Sergiy A. Vorobyov,et al.  Robust Adaptive Beamforming Based on Steering Vector Estimation With as Little as Possible Prior Information , 2012, IEEE Transactions on Signal Processing.

[2]  Sergiy A. Vorobyov,et al.  Robust Adaptive Beamforming Using Sequential Quadratic Programming: An Iterative Solution to the Mismatch Problem , 2008, IEEE Signal Processing Letters.

[3]  Olivier Besson,et al.  Performance analysis of beamformers using generalized loading of the covariance matrix in the presence of random steering vector errors , 2005, IEEE Transactions on Signal Processing.

[4]  Asoke K. Nandi,et al.  Blind MIMO equalization with optimum delay using independent component analysis , 2004 .

[5]  Wei Jin,et al.  Robust adaptive beamforming based on a new steering vector estimation algorithm , 2013, Signal Process..

[6]  Jian Li,et al.  Fully automatic computation of diagonal loading levels for robust adaptive beamforming , 2008, 2008 IEEE International Conference on Acoustics, Speech and Signal Processing.

[7]  References , 1971 .

[8]  Jian Li,et al.  On robust Capon beamforming and diagonal loading , 2003, IEEE Trans. Signal Process..

[9]  Wee Ser,et al.  Adaptive Uncertainty Based Iterative Robust Capon Beamformer Using Steering Vector Mismatch Estimation , 2011, IEEE Transactions on Signal Processing.

[10]  Ender M. Eksioglu,et al.  Group sparse RLS algorithms , 2014 .

[11]  Qing Huo Liu,et al.  Robust adaptive beamforming using an iterative FFT algorithm , 2014, Signal Process..

[12]  Yang-Ho Choi,et al.  Robust adaptive beamforming method using principal eigenpairs with modification of PASTd , 2013, Digit. Signal Process..

[13]  Hector Perez-Meana,et al.  Enhanced Radar Imaging in Uncertain Environment: A Descriptive Experiment Design Regularization Approach , 2008 .

[14]  Marius Pesavento,et al.  Maximally Robust Capon Beamformer , 2013, IEEE Transactions on Signal Processing.

[15]  Tuan Nguyen,et al.  Blind CMA beamforming for narrowband signals with multipath arrivals , 1998 .

[16]  Sergiy A. Vorobyov,et al.  Principles of minimum variance robust adaptive beamforming design , 2013, Signal Process..

[17]  Yujie Gu,et al.  Robust Adaptive Beamforming Based on Interference Covariance Matrix Reconstruction and Steering Vector Estimation , 2012, IEEE Transactions on Signal Processing.