Low-complexity non-uniform diagonal loading for robust adaptive beamforming
Wenxing Li, Bin Yang, Yu Zhao · 2017 International Applied Computational Electromagnetics Society Symposium (ACES) · 2017
In this paper, a low-complexity robust adaptive beamforming method is proposed to against array steering vector (ASV) mismatch and effects of low snapshots. The robustness of proposed method depends on two aspects: the non-uniform diagonal loading which prevent the beamformer weight vector from converging to the noise components and variable diagonal loading factor can be changed adaptively when the input signal-to-noise ratio (SNR) changed. Simulations results demonstrate that the proposed method provides strong robustness against ASV mismatch and effects of low number of snapshots.