
Design and simulation of optimal guidance law for intercepting different maneuvering targets
ZHANG Ou, XIAO Yanhai, LU Haiying
Aerospace Control ›› 2025, Vol. 43 ›› Issue (1) : 54-61.
Design and simulation of optimal guidance law for intercepting different maneuvering targets
A guidance law with variable control weight is proposed,which is based on the optimal control method for intercept different types of maneuvering targets by using air-defense missile. A state equation of relative motion between missile and target in the longitudinal plane is set up,and an indicator function based on variable control weight and line of sight angular velocity constraint is designed,furthermore,the optimal guidance law related to weight coefficients is derived by using the minimum numerical principle. Simulation experiments are implemented for different types of maneuvering targets,and the results indicate that the performance of the optimal guidance approach proposed in this paper is superior to traditional proportional guidance method. The line-of-sight angular velocity convergence is fairly quick,which can form preferable reverse orbit situation. Furthermore,regarding targets under different maneuvering modes,the weight of the optimal guidance law can be adjusted to match the optimal control parameters of each maneuvering target.
Air-defense missile / Maneuvering target / Minimum principle / Optimal guidance law / Variable weight {{custom_keyword}} /
表1 脱靶量比较 |
机动方式\导引方法 | 比例导引/m | 最优导引律/m | |||
---|---|---|---|---|---|
n=1 | n=0 | n=-3 | n=-6 | ||
水平直飞 | 0.973 | 0.6915 | 0.516 | 0.3556 | 0.4156 |
S形机动 | 1.389 | 1.1 | 0.3289 | 0.7672 | 0.2184 |
半滚倒转机动 | 1.516 | 0.6802 | 0.5172 | 0.5423 | 0.956 |
向上拉升 | 2.101 | 0.1449 | 1.22 | 1.189 | 1.506 |
向下俯冲 | 0.6085 | 0.6292 | 0.371 | 0.306 | 0.5085 |
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