超视距地波雷达抗干扰能力分析与评估

从地波雷达的技术特点出发，对地波雷达系统的抗干扰能力进行分析，扩充了雷达系统抗干扰能力自卫距离模型，分析了自卫距离与抗干扰改善因子的关系；针对雷达的自适应跳频抗干扰技术，分别在雷达受到两种特定干扰的情况下探讨了自适应跳频抗干扰改善因子的分析方法；通过综合雷达所采用的3种抗干扰措施对应的抗干扰改善因子得到新的雷达抗干扰改善因子，使雷达自卫距离相近于电子对抗环境下的实际探测距离，以模糊集的形式对雷达的抗干扰能力进行定量评估。

Analysis and Evaluation of Anti-Jamming Capability of HF Ground-Wave Radar

The anti jamming capability of HF ground wave radar（HFGWR） is analyzed from its technical characteristics. The extended model of self-protection distance is proposed and the relation between the distance and EEIF is analyzed. Aiming at the adaptive frequency hopping anti jamming technique of the radar, the method of analyzing the improvement factor of adaptive frequency hopping is discussed under two given jamming circumstances. By combining three anti jamming methods adopted by HFGWR, the new EEIF is achieved. So the self protection distance is similar to the real detection distance under the environment of electronic countermeasure. From this way, a quantitative evaluation of anti jamming capability of HFGWR is finally made in the form of fuzzy set.