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传统制导律多基于常速运动假设,与实际情形并不一致,往往无法提供满意的性能.对此,基于微分对策理论,提出一种适用于变速拦截情形的有界控制非线性制导律.将对策双方的速度变化直接考虑到非线性相对运动关系中,并通过适当选取的状态变量进行线性化,从而设计制导律,同司时考虑可执行性,并将其转化为原系统非线性状态变量的表达形式.仿真结果表明,该制导律可实现目标的有效拦截,对拦截导弹机动性能要求不高且便于执行.
Conventional guidance law is often based on the assumption of constant speed motion, which is not consistent with the actual situation and often can not provide satisfactory performance.In this paper, based on the differential game theory, a bounded control nonlinear guidance law applicable to variable speed interception is proposed. The speed changes of both sides take the non-linear relative motion directly into consideration and design the guidance law by linearizing appropriately selected state variables, considering the enforceability with the same department and transforming it into the nonlinear state variables of the original system The simulation results show that the guidance law can achieve the effective interception of the target and the maneuver performance of the interceptor missile is not demanding and easy to implement.