Research On Agile Satellite Mission Planning Under Condition Of Multi-satellite Collaborative

In order to adapt the further objectives of the 14 th five-year plan and implement the achievement of space-aeronautics incorporation,the mission planning of the multi-satellite coordination has become one of the highlight researches,which could play a more efficient usage of the agile satellite.Some tasks,like marine supervision,earthquake damage survey,hill fire ascertainment,et al,could not be accomplished by single satellite because of the oversize area or the transience of tasks.Therefore,the mission planning for the region observation of the multi-satellite has highly practical significance.Most researches focus on multiple tasks of multi-satellite.There are few results on the same region observation of the multi-satellite mission planning due to the difficulty of the domain decomposition and the satellite cooperative.In this paper,a simultaneous mission planning scheme for the same region observation is proposed based on the differential evolution and the Hungarian algorithm.The topic is divided into two parts,the multi-satellite task allocation scheme and the single mission planning.The domain decomposition and task allocation scheme is the main content of the research,which could shorten the observe time and improve the overall efficiency of the satellite system.A software is also designed to verify the correction of the mission planning.Firstly,a selection scheme of the same working time window is set for the multiple satellites and the attitude change of uniform angular velocity is deduced.In this paper,the region observation model is defined.After that,a same time window selection scheme is designed.The active push scanning mode is chosen as imaging mode of the agile satellite in order to improve the scanning rate.And the attitude change of uniform angular velocity is derived to realize the attitude planning of the satellite.The practicability and the superiority of the active push scanning is verified compared with the traditional passive push scanning.Secondly,a domain decomposition and task assignment scheme is proposed of the multi-satellite region observation.The solving process divides into two parts,multi-satellite task allocation and the single mission planning.The optimization objective is set with the least attitude change and the least time consumption after clarifying the constraints of multi-satellite region observation simultaneously.A domain decomposition and task allocation scheme is proposed and the a differential evolution algorithm is introduced to optimize the decomposition result.The individual code is designed and values of the arithmetic operators are chosen based on simulation experiments.The scheme could shorten the task time and improve the efficiency of the satellite system.Finally,a simulation software is completed and the verification is conducted.Based on the given scheme,the overall program is presented by independent frames.The simulation software is conducted as data processing,algorithm implementation and the simulation result display.All the data information is imposed and processed at the beginning as the input of the algorithm implementation.The detailed plans are given and the results are assigned to single satellites for further mission planning.The results of all the satellites are transformed to the analog platform.The system analysis is carried out by setting different orbit heights,different scanning speeds and the different detector widths to verify the correction of the scheme designed in this paper.