一种改善相控阵雷达性能的有效措施

An Effective Measure to Improve Phased Array Radars

反辐射导弹威胁着雷达的生存,各种干扰使雷达无法发挥应有的作用。因此,降低相控阵的副瓣,势在必行。但是,研制低副瓣和超低副瓣相控阵是非常困难的。本文提出一种方法,仅通过改变相位分布,来实现对副瓣的抑制。利用相控阵雷达的波束扫描移相器,可方便地达到这一目的。用这种方法,对接收阵来说,可抗干扰信号;对发射阵来说,可用于抗反辐射导弹。

Radars are threatened by ARM, and restricted by various jammings. It is, therefore, needed to lower the pattern sidelobes of phased arrays. But it is very difficult to develop low or very low sidelobe phased arrays. This paper presents an approach, by which sidelobes can be lowered through changing phase distribution. It can be easily realized by using beam-scanning phase shifters within phased array radars. Such radars can suppress interference signals and deal with ARM.