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为了提高航天器轨道优化设计的精确度,采用多体动力学模型进行深空探测轨迹优化。深空飞行器从地球出发,采用小推力控制,对距地球三维轨迹10 000 000 km内行星中的1062颗行星进行探测。给出了一种深空探测4-D飞行轨迹的全局优化算法,即采用静态参数(改进遗传算法)+动态参数(原始自然算法)的优化算法。从飞行动力学原理可知,以上基于多体动力学模型的深空探测轨迹优化结果更可信。
In order to improve the precision of spacecraft orbit optimization design, the multi-body dynamics model is used to optimize deep space exploration trajectory. Deep space vehicles depart from Earth and use small thrust control to detect 1062 planets within 10 000 000 km of the Earth’s three-dimensional trajectory. A global optimization algorithm for deep space exploration 4-D flight path is given, which is the optimization algorithm using static parameters (improved genetic algorithm) + dynamic parameters (original natural algorithm). From the principle of flight dynamics, it can be seen that the optimization results of deep space exploration trajectories based on multi-body dynamics model are more credible.