空空导弹越肩发射的虚拟目标比例导引律

Virtual target proportional navigation guidance law for air-to-air missile over-the shoulder

在空空导弹越肩发射过程中,导弹只能获得后方目标的角度信息。为了提高越肩发射空空导弹的截获概率,提出了一种实现导引头同时"角度截获"和"距离截获"目标、易于工程实现的导引策略:利用目标角度信息引入一个与红外导引头探测距离相关的虚拟目标,以此虚拟目标将导弹按比例导引律引向真实目标。通过仿真实例分析了导引头探测距离对虚拟目标导引方法的性能影响,证明了该方法的可行性。

In the case of over-the shoulder, only angle information of rear target is available. A practical guidance method which can realize angle-acquisition and distance-acquisition target at the same time was proposed to improve the probability of target acquisition. Using the target angle information, a virtual target related with the detection range of IR seeker was introduced to guide the missile to fly to the real target by proportional navigation guidance. The effect of IR seeker detection range on the performance of the virtual target proportional navigation guidance is analyzed and the effectiveness of the guidance law is proved by simulation.