数字波束形成雷达的天线方向图预置零技术（英文）

Deterministic Nulling for Antenna Pattern of Digital Beamforming Radar Systems

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。

Deterministic nulling arises in digital beamforming radar applications where the locations of interferers and clutter re-gions are either known a-priori or can be determined by other means. We address this problem of deterministic nulling by specif-ying the resulting antenna patterns with multiple nulls that include those extending continuously across intervals of prescribed widths. The solution involves determining the basis vectors for the null spaces of such extended regions, or their composite, via the singular value decomposition of the pertinent portions of the antenna response matrix. An efficient practical implementation of this procedure is then provided.