The invention discloses a spacecraft optical imaging game-oriented single-step prediction avoidance trajectory planning method, and the method comprises the following steps: constructing a double-layer optimization architecture for an optical imaging game avoidance strategy optimization problem described in a graph; the method comprises the following steps: firstly, performing avoidance strategy optimization from an avoidance star angle in upper layer optimization, calculating an effective imaging time length and an orbit position constraint penalty term after avoidance, predicting a future strategy of an imaging star in a lower layer optimization form, and estimating speed increment consumption of the imaging star so as to calculate a cost-efficiency ratio generated by self avoidance maneuver; and finally, calculating the weighted sum of the effective imaging duration, the penalty term and the cost-efficiency ratio to obtain a fitness function, and carrying out iterative optimization calculation by using a genetic algorithm to obtain an evasion strategy based on single-step prediction. According to the method, the problem of optimality deficiency of unilateral optimization in a long-term game process is solved while the deficiency of related research of an optical imaging evasion strategy in existing literatures is made up.
本发明公开了一种面向航天器光学成像博弈的单步预测规避轨迹规划方法,该方法包括如下步骤:针对图中描述的光学成像博弈规避策略优化问题,构建一种双层优化架构。首先,在上层优化中以规避星角度进行规避策略优化,计算规避后的有效成像时长与轨位约束惩罚项,并且以下层优化形式预测成像星的未来策略,预估其速度增量消耗,以计算自身规避机动产生的费效比。最终计算有效成像时长、惩罚项与费效比加权和,得到适应度函数,并以遗传算法进行迭代寻优计算,获得基于单步预测的规避策略。本发明在弥补现有文献中光学成像规避策略相关研究缺失同时,解决了单边优化在长期博弈过程中最优性缺失的问题。
Spacecraft optical imaging game-oriented single-step prediction avoidance trajectory planning method
一种面向航天器光学成像博弈的单步预测规避轨迹规划方法
06.08.2024
Patent
Elektronische Ressource
Chinesisch
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