红外空空导弹发射后截获制导研究

Middle Guidance and Evaluation for Lock-on After Launch Missiles

大离轴角发射和发射后截获是空空导弹重要的战技指标,发射后截获制导律和数据链信息误差是影响导弹截获性能的主要因素。根据红外制导导弹大离轴角发射条件和导引头截获目标对导引头指向与弹目视线方向的关系,设计了攻击机动目标的发射后截获制导律,给出了满足导引头截获条件的制导律参数选择原则,仿真研究了数据链信息误差对发射后截获制导性能的影响。研究表明,设计的发射后截获制导律能够满足导引头对机动目标的截获要求,对发射后截获导弹制导系统设计具有参考价值。

Advanced air-to-air missiles feature high-off-boresight capability and lock-on after launch capability with a datalink. For missiles with IR/IIR （ InfraRed/ Imaging InfraRed） seekers, the middle guidance and datalink information errors are key factors that effect the target acquisition performance in the hand-over phase. Based on the geometry requirement of the seeker on the acquisition, a middle guid- ance law was designed to attack maneuvering targets. The method for choosing the parameters in guidance law was also given. Then the effects of datatlink errors, especially the target posiotion and speed informa- tion errors on the target acquisition performace were analysed therough simulations. The results shows that the guidance law designed can satisfy the requirement for the target acquisition.