A task allocation method and system in a virtual constellation dynamic environment

Abstract

The invention provides a task allocation method in a virtual constellation dynamic environment, and relates to the technical field of satellite scheduling. The method comprises the steps that when a virtual constellation management and control system receives a to-be-processed task, a meta-task set corresponding to the to-be-processed task is formed; the satellite platform searches an executable task set of each satellite in the management domain of the satellite platform and sends the executable task set of each satellite in the management domain of the satellite platform to the virtual constellation management and control system; a candidate meta-task subset formed by the executable meta-tasks of each satellite is determined in the management domain of the satellite platform; and the meta-task with the maximum expected revenue of each satellite in the candidate meta-task subset is used as the meta-task expected to bid by the satellite in the candidate meta-task subset; aiming at eachmeta-task in the meta-task set, the virtual constellation management and control system forms a candidate satellite set corresponding to the meta-task set; and an ordered satellite sequence corresponding to the meta-task is determined. According to the present invention, the task allocation efficiency can be improved.

Description

technical field [0001] The invention relates to the technical field of satellite scheduling, in particular to a task allocation method in a virtual constellation dynamic environment. Background technique [0002] Satellites have a wide range of application and use value in many fields, but because the functions and capabilities of satellites are limited by themselves, that is, the orbit of satellites is constant and fixed, it is impossible to monitor a single target in real time and uninterruptedly. Periodic imaging of the target, so it is not possible to conduct effective reconnaissance and coverage of the target in the target area in a timely and effective manner, and cannot meet the satisfactory needs of users. Therefore, in the actual satellite observation, there is a trend of multi-satellite joint earth observation , the concepts of centralized satellite formation and satellite constellation also emerged. Although the imaging coverage of these satellite combinations is ...

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Problems solved by technology

[0002] Satellites have a wide range of application and use value in many fields, but because the functions and capabilities of satellites are limited by themselves, that is, the orbit of satellites is constant and fixed, it is impossible to monitor a single target in real time and uninterruptedly. Periodic imaging of the target, so it is not possible to conduct effective reconnaissance and coverage of the target in the target area in a timely and effective manner, and cannot meet the satisfactory needs of users. Therefore, in the actual satellite observation, there is a trend of multi-satellite joint earth observation , the concepts of centralized satellite formation and satellite constellation also emerged. Although the imaging coverage of these satellite combinations is relatively large and the revisit period is short, compared with the development speed of the current mission requirements, it has been unable to efficiently meet tasks, and because these satellite combinations must develop, launch and manage and maintain satellites, the cost of their construction is high

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