天基对地打击动能武器最大横程分析  

Analysis on maximum cross-range of space-to-ground kinetic weapons

作　　者：胡正东[1] 张皓之[1] 蔡洪[1] 

机构地区：[1]国防科技大学航天与材料工程学院,长沙410073

出　　处：《固体火箭技术》2009年第3期249-253,共5页Journal of Solid Rocket Technology

摘　　要：天基对地打击动能武器(SGKW)用于从太空对地面高价值战略目标进行快速、准确的打击。针对最大横程要求,研究了SGKW打击轨道的优化设计方法。首先建立了SGKW的无量纲化空间运动模型,然后利用庞特里亚金极大值原理将横程最大打击轨道的最优控制问题转化为两点边值问题。由于约束条件中存在优化参数,一种基于"遗传算法+序列二次规划"的组合优化算法被用于求解未知参数。仿真结果验证了上述方法的有效性。最后,对SGKW的打击覆盖范围也进行了简要分析。The space-to-ground kinetic weapon （SGKW） is mainly used to strike the ground strategic target with high value rapidly and exactly from space. According to the requirement of maximum cross-range, a method of eoplanar hit orbit optimization design for SGKW was discussed. Firstly the dimensionless spatial motion model of SGKW was established, and then the optimal control problem of maximum cross-range hit orbit was translated into two-point-boundary-value problem by using Pontryagin maximum principle. Because optimization parameters are involved in the constraint conditions, a combined optimization algorithm based on genetic algorithm and sequential quadratic programming was used to calculate the unknown parameters. Simulation results present the effectiveness of the method. Finally the coverage of SGKW was briefly analyzed.

关 键 词：天基对地打击动能武器 庞特里亚金极大值原理 横程最大打击轨道 遗传算法 序列二次规划 

分 类 号：V474.28[航空宇航科学与技术—飞行器设计]