基于数字波束形成体制的相控阵雷达系统,如果杂波和干扰的角度先验信息可以获知,则可采用方向图预置零技术进行相关的抑制处理。文中提出一种能够实现可控制方向图零陷宽度和零陷数量的处理方法。该方法采用对阵列方向图响应矩阵的奇异值分解和重构,进行扩展的零空间基向量的求解。同时,针对提出的新方法的实际应用,论文给出了一种可实用的求解算法 Phased array radar system based on digital beamforming system, if the clutter and interference angle of the priori information can be learned, you can use the directional pattern preset zero technology for the suppression. In this paper, a method to deal with nulls width and number of nulls of controllable pattern is proposed. This method uses the singular value decomposition and reconstruction of the array pattern response matrix to solve the extended zero-space basis vector. At the same time, in view of the practical application of the proposed new method, the paper presents a practical solution algorithm