基于工作流的卫星调度系统

Satellite scheduling system based on workflow

根据当前卫星网络发展趋势和对卫星网络资源进行充分有效利用的应用需求,对卫星网络的特点进行了研究,分析了当前卫星调度系统研究的局限,并介绍了工作流模型以及根据卫星应用进行的相关改进。在此基础上,提出了一种针对由多个子任务构成的复杂任务、基于工作流模型的分层卫星调度系统。该卫星调度系统可以协同多种卫星资源,并自适应地调度卫星任务。对该卫星调度系统的体系结构、系统关键模块、调度流程以及几种优化机制进行了详细阐述。最后通过实验结果表明了该调度系统的可行性和有效性。

In order to make the best of resources of satellite networks, based on trend of the development of satellite network, characterizes of satellite networks are researched and disadvantage of current satellite scheduling system are analyzed, then workflow model and its modifications for satellites applications are introduced, and a workflow-based layered satellite scheduling system which aims at complex tasks which make up ofmulti-subtasks are described. This system cooperate with multi-satellite resources and adaptively schedule satellite tasks. Architecture, key components, scheduling process and optimization mechanism of the satellite scheduling system are discussed indetail. Finally, experiment is showed to verify the feasibility and effectiveness of the system.