机动目标拦截末制导状态估计器的误差特性

 针对大机动目标拦截问题，分析了末制导阶段目标机动条件下状态估计器的误差特性。首先将目标机动输入未知时的状态估计器模型表示为一随机线性混合系统,当混合系统的模式跳变事件满足可观测性条件时，模式决策过程可等效为真实模式的延迟；随后推导了模式决策延迟条件下估计误差的动态方程与传递函数，并得到了一定误差要求下模式决策延迟的上界与目标机动模式逗留时间的下界；最后通过空空导弹拦截高速战机的典型实例验证了该理论分析的正确性。研究结果为设计此类线性混合系统估计器提供了理论依据。

Error Characteristics of State Estimator in Terminal Guidance for Maneuvering Target Interception

The error characteristics of a state estimator are analyzed in the terminal guidance phase for highly maneuvering target interception. Firstly,the estimator's model is expressed as a stochastic linear hybrid system with unknown maneuvering control input . When the mode jump event of the hybrid system is observable,mode decision results can be equivalent to the delayed true mode. Then the error dynamic equation and transfer function are derived when the mode decision delay exists. To achieve the guaranteed e...