被动微波/红外成像复合导引头交班性能的改进方法

通过对舰空导弹复合导引交班问题的研究,分析出交班过程中存在控制信号一致性和衔接性问题;经分析后,建立了复合导引头各子系统跟踪回路的数学模型且进行了简化,并构建出其制导控制系统的数学模型;以此制导控制系统数学模型为基础,进行了舰空导弹防御反舰导弹类目标时,典型情况下交班过程的仿真分析;结果表明:交班过程对弹道有一定扰动影响;针对此问题,以自适应交接律的思想为基础,交班时采用交班算子进行交班,或弹目距离较远且交班时采用追踪法为导引律;仿真结果表明:采用一次函数或正弦函数作为交班算子及远距离交班时,采用追踪法均可以降低交班对弹道的扰动程度,改善了交班性能.

Performance improvement in handover of passive microwave/ infrared imaging composite seeker

Consistency and connectivity existing in control signal in the handover process were analyzed based on the research of the handover problem of the composite guidance ship-to-air missile.The mathematical model of the subsystem tracking loop of composite seeker was built and simplified,and the mathematical model of guidance and control system was constructed.With these models,simulations of handover process in typical conditions were analyzed assuming the target such as an antiship missile was defended by ship-to-air missiles.Simulation results show that the handover process has certain disturbance on the trajectory.Regarding this problem,the handover operator was adopted based on the adaptive join law and the pursuit guidance method was used as the guidance law during the handover process and the missile-target distance was far away.Experimental results show that the disturbance ontrajectory is reduced and the handover performance was improved by using the linear or sine function as the handover operator,or using the pursuit guidance method when the missile-target distance was far away.