针对相邻目标间具有不同转换方式的成像卫星调度问题,分析动作转换时间、存储容量、卫星能量等复杂约束,建立动态拓扑结构无环路有向图模型,引入非约束支配路径的概念,提出基于标记更新思想的动态路径搜索算法(DPSA)对问题进行求解。实验结果表明,考虑目标问不同转换方式的DPSA算法在牺牲一定求解效率的基础上,能够全面提高调度效果。
Considering the different transition modes of any two adjacent targets observed by a satellite, the complex scheduling constraints including slewing time, storage capcity and power are analyzed in this paper. Also, the acychc directed graph model with a dynamic topological structure is established. In addition, the concept of constraint non- dominant path is proposed, and a dynamic path search algorithm (DPSA) based on label update is suggested. Experimental results show that the DPSA algorithm can greatly improve the scheduling quality at the expense of timing complexity and space complexity.