在轨实时引导多星成像任务规划方法研究

Research on Real-time Guided Multi-satellite Imaging Mission Planning Method

针对遥感卫星在轨自主任务规划的强时效需求和依赖地面系统的现状,通过分析卫星的轨道特性和多载荷工作配合的方式,提出了一种面向在轨实时引导成像的多星自主任务规划方法。文章首先根据成像的要求,将卫星载荷对目标的可见性,统一转化为“时间-姿态”信息,在保留有效信息的前提下对轨道递推模型合理简化,设计了卫星成像的无冲突任务序列生成方法,并为优化成像收益设计了临机调整策略。仿真结果表明:面向在轨实时引导成像的多星自主任务规划方法能实现将多目标向多星系统的分配,增加临机调整策略后,可实时地通过用高收益目标替代低收益目标的方式提高整个规划方案的成像收益,所提出的方法有效,研究结果可为多星在轨自主任务规划技术研究提供参考。

Aiming at the strong time-dependent requirements of remote sensing satellites in orbital mission planning and the status quo of relying on terrestrial systems,a multi-satellite autonomous mission planning method for on-orbit real-time guided imaging is proposed by analyzing the orbit characteristics of satellites and the multi-load work coordination.Firstly,according to the requirements of imaging,the article transforms the visibility of satellite load to the target into“time-attitude”information,and the orbit recurrence model is reasonably simplified on the premise of retaining effective information.Based on the information,the method for generating collision-free task sequences for satellite imaging is designed,and the temporary adjustment strategy for optimizing imaging revenue is designed.The simulation results show that real-time guided multi-satellite imaging mission planning method can allocate multiple targets to multiple star systems,after adding temporary adjustment strategy,the imaging revenue of the whole planning scheme can be improved in real time by replacing the low-income target with the high-income target.The method proposed is effective,and the research results can provide reference for the research of multi satellite autonomous mission planning technology.