关键词: 无人机, 自卫干扰, 探测概率, 脱靶距离, 击中概率

Abstract: The process of a UAV breaking through hostile air-defense system is presented，and the sensitivity of UAV influenced by SSJ in the process is analyzed，especially the effect of SSJ on various tache of sensitivity is researched.The smallest detection range，detection probability，miss distance and hit probability influenced by average interference power are simulated and the simulation result shows that the sensitivity of UAV can reduce greatly under the countermeasure support of SSJ，thus enhances its survivability on battlefield.The sample results show that those methods and processes provide some guidance for evaluating the sensitivity of UAV，enhancing its survivability and increasing the effectiveness of radar detection system.

Key words: Unmanned Aerial Vehicle（UAV）, Self-Screening Jamming（SSJ）, detection probability, miss distance, hit probability