A novel adaptive nulling of interference method for array radar

The anti-interference methods via adaptive beamforming (ABF) and block matrix (BM) can be used to suppress interference in array radar signal processing. ABF method can adaptively form null in the direction of interference, whose performance is up to its sample covariance matrix (SCM) and requires the interference environment consistent. BM method can block interference via preprocessing, which will lead to the loss of the array degree of freedom, causing the performance degradation. To solve these problems, a novel adaptive nulling of interference method is proposed in this paper, which controls the null depth by coefficients. Finally, some simulation experiments are provided to demonstrate the effectiveness of the proposed method.