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针对球坐标系下的三维导弹与目标相对运动模型,基于零化导弹与目标视线角速度的思想,在不依赖于碰撞线附近线性化的假设的情况下,设计了满足输入-状态稳定性(ISS)理论的非线性鲁棒导引律。该导引律的设计不需对目标机动加速度做自适应估计,在目标运动信息完全未知的情况下可实现对机动目标的扰动抑制、跟踪和拦截。仿真结果表明,所设计的导引律对做复杂大机动逃逸运动的目标仍有较强的跟踪性和鲁棒性,并可得到满意的脱靶量。
Aimed at the three-dimensional missile and target relative motion model in spherical coordinate system, based on the assumption of zero-missiles and target sight velocity, the input-state stability (ISS ) Theory of nonlinear robust guidance law. The design of the guidance law does not need adaptive estimation of the target maneuvering acceleration, and the disturbance suppression, tracking and interception of the maneuvering target can be realized when the target motion information is completely unknown. The simulation results show that the designed guidance law still has strong tracking and robustness to do the goal of complex large maneuvering escape and can obtain the satisfactory miss distance.