隐身飞机自卫干扰对雷达探测性能的影响

针对雷达探测自卫干扰状态的隐身飞机时,探测性能难以被评估问题,提出了一种基于侧站盘旋航迹的隐身飞机自卫干扰模型。在经过飞机敏感性分析、航迹参数设定和坐标系转换后,对飞机视线姿态角进行了解算,结合飞机全空域的静态RCS数据,仿真计算了时变的动态RCS序列。依据雷达探测距离方程,分析得到了飞机在正常飞行状态和自卫干扰状态的雷达探测范围变化结果;并利用雷达探测概率公式,对飞机在2种状态下的瞬时探测概率进行了比较研究。结果表明:隐身飞机自卫干扰能够缩减探测距离,减小探测概率,降低雷达探测性能,为交战双方积累电子战经验提供了一定的参考价值。

Influence of self-defense jamming of stealth aircraft on radar detection performance

Aimed at the problem that it is difficult to evaluate radar detection performance when detecting stealth aircraft under the condition of self-defense jamming,a self-defense jamming model of stealth aircraft based on spiral flying was proposed.After aircraft susceptivity analysis,trajectory parameter setting and coordinate system conversion,attitude angle to the line of sight of aircraft was calculated.Then combined with all airspace static RCS data of stealth aircraft,the time-varying dynamic RCS series was simulated.According to detection range equation of radar,the change results of radar detection range were obtained under the normal flight conditions and self-defense jamming conditions of aircraft,and the instantaneous detection probabilities of radar were compared and studied utilizing detection probability formula of radar under two kinds of aircraft conditions.The results show that self-defense jamming of stealth aircraft can reduce detection range and detection probability,and decline radar detection performance,so the certain reference value is offered to accumulate the electronic warfare experience for both sides at war.