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为了提高导弹的作战效能,取得最佳毁伤效果,除了要保证打击精度,也需要根据目标特性确定合适的攻击角度。针对超声速反舰导弹末段对目标实施大角度俯冲攻击的特点,建立了弹目相对运动数学模型,通过分析与推导,将多约束导引问题转化为控制问题,并应用模糊滑模变结构理论设计了纵向通道导引律。在目标静止和目标机动两种情况下开展了质点弹道仿真,仿真结果满足末段脱靶量和落地倾角要求,证明了该导引律的正确性和可行性。
In order to improve the combat effectiveness of the missile and achieve the best damage effect, in addition to ensuring the accuracy of attack, it is also necessary to determine the appropriate attack angle according to the target characteristic. A mathematical model of relative motion of projectile was established to deal with the large-angle subduction attack of supersonic antiship missile. The mathematical model of relative motion of projectile was established. By analyzing and deducing, the multi-constraint guidance problem was transformed into a control problem, and the application of fuzzy sliding mode variable structure theory Longitudinal channel guidance law was designed. The particle trajectory simulation is carried out under both stationary and target maneuvering conditions. The simulation results meet the requirements of the final miss distance and landing inclination, which proves the correctness and feasibility of the guidance law.