关键词: 天基预警, 任务分解, 复合优先权

Abstract: The sensor scheduling problem for the space-based early warning system is studied.The process and characteristics of early warning tasks are analyzed，and a task decomposing method based on key-points is presented，which can not only simplify relationships between the multiple tasks and resources，but also reduce resource occupancy of one task.An algorithm based on multiplex priority is designed to solve the scheduling problem of all sub-tasks.Experimental results show that satisfying scheduling schemes can be attained in a receivable timespan.

Key words: space-based early warning, task decomposing, multiplex priority