远距离支援干扰下双隐身飞机自卫相参干扰对单脉冲雷达影响

以复杂电磁环境下双隐身飞机自卫相参干扰对抗单脉冲雷达为研究背景,针对单脉冲雷达角欺骗问题,提出了远距离多假目标干扰下双隐身飞机自卫相参干扰模型。首先构建双隐身飞机姿态敏感性模型,提取即时雷达散射截面序列,依据目标回波与干扰信号对应关系,建立复合等效信干比模型。在此基础上,采用脱靶与有效干扰最小即时距离对双机干扰模式下雷达角跟踪误差形成评判指标。仿真表明,该组网干扰模式使雷达角跟踪误差提高696.49倍,比单一干扰模式使单脉冲雷达角跟踪误差平均提高1.07倍,检验了组网复合相参干扰样式的有效性。

Influence of self-defense coherent jamming of dual stealth aircraft on monopulse radar with long-range support jamming

In the presence of the angle tracking deception difficulty of monopulse radar, a self-defense coherent deception jamming model of dual stealth aircraft based on long-range support assisted multi-false-target jamming is proposed under the background of the self-defense coherent jamming of dual stealth aircraft against monopulse radar in complex electromagnetic environment. Firstly, the attitude sensitivity model of dual stealth aircraft is constructed, and the real-time radar cross section (RCS) sequence is extracted. According to the corresponding relationship between target echo signals and jamming signals, the basic composite equivalent signal to interference ratio model is established. Furthermore, the judgment criterion is constructed by using missdistance and minimum instantaneous distance of effective jamming to form evaluation indexes for dual aircraft networking countermeasures modes. The simulation results show that the netted jamming mode can increase the angle tracking error of radar by 696.49 times, and the average angle tracking error of monopulse radar by 1.07 times compared with the single jamming mode, and the validity of the combined coherent interference mode is verified.