雷达对抗中,转发式欺骗干扰能以较小功率实现对回波信号的有效压制。由于干扰信号从主瓣进入,传统抗干扰技术手段很难奏效。为此,文中提出了一种基于掩护信号的欺骗干扰对抗方法。针对转发式干扰机干扰通道资源有限的弱点,通过掩护信号的设计使用,对干扰侦测系统进行有效引导,使干扰频率、波形锁定掩护信号,有效保护跟踪信号。仿真结果表明,该方法能有效降低跟踪频率被干扰概率。

In radar countermeasure, deception jamming can suppress target echoes effectively through small power. Since that interference signal enters radar receiver from the main lobe, it is hard to restrain it through the traditional means of anti-jamming. In order to accomplish radar anti deception jamming, in this article, a method was researched to confront deception jamming based on screening signal. The interfering channels in the repeater jammer can be limited, which could be used by the radar to guide jamming surveillance system effectively through the design and use of screening signal. As a result, the interference signal will lock the screening signal in frequency and wave shape, and the tracking signal is protected. Simulation result shows that this method can reduce interference probability of tracking frequency effectively.