自适应-自适应波束形成的零陷加深技术

The technology of null depth of adaptive-adaptive beamforming

对于大型阵列雷达,自适应-自适应波束形成(A-A DBF)是一种能有效减小运算量、易于工程实现的自适应波束形成方法,但在干扰功率起伏较大的背景下,其自适应抗干扰能力受到影响。本文给出了一种先增强A-A DBF协方差矩阵中干扰分量再进行自适应处理的方法。该方法可以有效改善干扰功率起伏对自适应波束形成的影响,提高系统的抗干扰能力。

For large phased-array radars,the adaptive-adaptive beamforming（A-A DBF） is an effective adaptive beamforming method with less computation requirements and easy implementation.But in the environment of the fluctuant interference power,the adaptive anti-interference capability is degraded.An improved method is presented,in which the interference power is enhanced in the A-A DBF covariance matrix before the adaptive processing.The method can effectively reduce the effects of the interference power fluctuation on the adaptive beamforming and improve the anti-interference capability.