The invention provides a low-orbit satellite constellation networking electric propulsion orbit transfer strategy optimization method and system, and the method comprises the steps: 1, building a constellation networking electric propulsion transfer orbit optimization problem with optimal time according to the thrust of electric propulsion on the basis of engineering constraints only having an on state and an off state; step 2, carrying out stage division on the networking process, and carrying out stage parameterization processing on the thrust magnitude and direction; 3, a variable to be solved is determined, and the constellation networking electric propulsion transfer orbit optimization problem is converted into a targeting problem with control variables constrained; and 4, guessing the initial value of the target shooting problem, and solving by adopting a Newton iteration algorithm to finally obtain the optimal solution of the constellation networking electric propulsion transfer orbit optimization problem. The method can guarantee that the transfer orbit meets the preset networking constraint, is low in requirement for an attitude control system, is simple in structure, is high in solving efficiency, facilitates the on-satellite implementation, and can effectively achieve the combined control of the orbit elements.
本发明提供了一种低轨卫星星座组网电推进变轨策略优化方法和系统,包括:步骤1:根据电推进的推力大小,在仅有开和关两种状态的工程约束的基础上,建立时间最优的星座组网电推进转移轨道优化问题;步骤2:对组网过程进行阶段划分,并将推力大小及方向进行分阶段参数化处理;步骤3:确定待求解变量,将星座组网电推进转移轨道优化问题转换为控制变量受约束的打靶问题;步骤4:对打靶问题的初值进行猜测,采用牛顿迭代算法进行求解,最终得到星座组网电推进转移轨道优化问题的最优解。本发明可以保证转移轨道满足预先设定的组网约束,对姿控系统要求低,结构简单,求解效率高,有利于星上实现,可以有效实现轨道根数的联合控制。
Low-orbit satellite constellation networking electric propulsion orbital transfer strategy optimization method and system
低轨卫星星座组网电推进变轨策略优化方法和系统
2022-11-01
Patent
Electronic Resource
Chinese
IPC: | B64G Raumfahrt , COSMONAUTICS |
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