孔径分割多功能雷达的任务调度研究

针对孔径分割多功能雷达实时任务调度中资源利用不充分的问题,提出了一种基于扩展域的任务自适应调度方法。方法以时间指针为对象,对该时刻的任务分析范围从当前调度间隔扩展到整个调度时间轴,从整个调度时间轴上所有满足时间指针处执行条件的任务中,选择一个优先级最高的任务,可实现任务间的紧密安排,有效减少空闲资源的浪费,使得孔径分割雷达能够在有限的资源内调度执行更多的任务。最后,将该方法与传统多任务并行调度方法进行对比仿真,仿真结果证明了该方法的有效性和优越性。

A Study of Task Scheduling for Multifunctional Radar on Aperture Partition

In this paper, aimed at the insufficient utilization of resources of the real-time task scheduling of radar, a method based on extended domain is given to achieve the task adaptive scheduling. The method takes the time pointer as object, extends the range of analyses of tasks on this time from the current scheduling interval to the whole timeline, selects the highest priority task from all tasks on the whole timeline that need to be scheduled and meet the execution conditions of the time pointer to be executed at the time pointer. The method makes closely arrangement between tasks, reduces the waste of idle resources effectively,and makes the radar to execute more tasks in limited time resources. Finally, comparing with the multiple task parallel earliest deadline first( MTPEDF) algorithm, the method in this paper is simulated. The simulation results prove effectiveness and superiority of the method.