当干扰位置快变化时,自适应波束形成的权矢量的更新速率跟不上干扰位置的变化速率,从而导致抗干扰的效果变差甚至使算法失效。文中在锥台形阵列的基础上,建立干扰位置扰动服从两点分布的模型,从数学的角度推导出一种锥台形阵列的二维零陷展宽算法,该算法可以根据实际快速运动干扰的特性,建立相应算法所需的先验参数,将此参数应用于该零陷展宽算法,可以有效地抑制对应的快速运动干扰。计算机仿真证明了该算法的有效性。

When the interference's position changes rapidly,the update rate of weight vector cannot cope with its change rate and could lead to a worse effect of anti-interference, even disable the algorithm. Based on truncated cone array, a binomial distribution model that disturbance of interference忆s position follows is established, and a two-dimensional nulling broaden algorithm is mathematically derived. The fast-moving interferences can be restrained effectively by building necessary prior parameters according to its features. The effectiveness of the proposed algorithm is proved by computer simulations.

TN957