基于 JADE-斜投影的鲁棒波束形成算法

A robust beamforming algorithm based on blind source signal separation and oblique projection matrix reconstruction is proposed to solve matrix reconstruction beamforming algorithms' sensibility to array amplitude-phase errors. Firstly, this method is based on blind source separation technique to obtain received signal and mixing matrix, combining with the prior information of interest signal to complete its signal steering vector search. Then, using the signal covariance matrix obtained from blind source separation to estimate array amplitude-phase errors. Finally, based on the mixed matrix and oblique projection idea of amplitude-phase error calibration, the proposed algorithm constructs oblique projection operators for each interference, with the projection of the received data into the interference oblique projection space, which obtains the corresponding interference signal and complete the reconstruction of the interference noise covariance matrix. The simulation results show that the proposed method has good robustness to the array amplitude-phase errors, which verifies the effectiveness of the proposed algorithm.