Journal
APPLIED COMPUTATIONAL ELECTROMAGNETICS SOCIETY JOURNAL
Volume 36, Issue 7, Pages 908-913Publisher
APPLIED COMPUTATIONAL ELECTROMAGNETICS SOC
DOI: 10.47037/2021.ACES.J.360713
Keywords
Index Terms-Array antenna; loading; robust adaptive beamforming
Funding
- Natural Science Foundation of Jiangsu province of China [BK20190956]
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This study proposes a robust adaptive beamforming method based on automatic variable loading technology, using a combination of non-uniform and diagonal loading matrix to optimize signal processing for both low and high input SNR cases.
-Diagonal loading technology is widely used in array antenna beamforming because of its simple method, low computational complexity and the ability to improve the robustness of beamformer. On this basis, this paper proposes a robust adaptive beamforming method based on automatic variable loading technology. The automatic variable loading matrix (AVLM) of the method is composed of two parts. The non-uniform loading matrix dominants when the input signal-to-noise ratio (SNR) is small, effectively control the influence of noise disturbance without affecting the ability of array antenna to suppress interference. The variable diagonal loading matrix dominants when the input SNR is high to improve the output performance of array antenna. Simulated results show that compared to other methods, the proposed method has better output performance for both low and high input SNR cases.
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