电子支援侦察系统超外差接收机的干扰技术研究

Research on interference technology of super-heterodyne receiver in electronic support reconnaissance system

为使我方雷达频点不被敌方侦察设备准确获取,首先分析了超外差接收机的输出特性;然后设计了一种频率分集式干扰波形,给出了对超外差接收机进行干扰的可行性分析;最后通过仿真验证了干扰的有效性.仿真结果表明,干扰信号会使超外差接收机输出多个具有欺骗性的干扰频点,且在其他参数上与我方雷达脉冲保持一致,进而使敌方难以区分干扰信号及雷达信号,达到了预期的干扰效果.

In order to make our radar frequency point not to be accurately acquired by the enemy reconnaissance equipment, this paper firstly analyzes the output characteristics of the super-heterodyne receiver. And then the paper designs a frequency diversity jamming waveform and makes a feasibility analysis on interference on super- heterodyne receiver. Finally, the effectiveness of the interference is verified through simulation. The result indicates that the interference signal will make the super-heterodyne receiver output multiple deceptive interference frequency points and they are identical to our radar pulse on other parameters, which makes it difficult for the enemy to distinguish the jamming signal from the radar signal so as to achieve the expected jamming effect.