基于改进优先级的相控阵雷达任务调度方法

A Task Scheduling Algorithm Based on Modified Priority for Phased Array Radars

针对相控阵雷达多目标跟踪中的资源调度的问题,提出基于改进优先级的任务调度方法。该方法将目标对雷达的威胁引入到目标任务优先级设计当中,首先,定义目标威胁度,根据目标和雷达的各项参数指标,将信息熵综合决策与主观权重法相结合,计算出目标的威胁度值;然后,将目标的威胁度值、任务工作方式优先级以及任务截止期进行综合规划,得到目标任务的综合优先级,最后对目标威胁度的计算和任务的调度分别进行仿真。仿真结果表明,方法对目标威胁程度的计算结果符合不同威胁度等级目标跟踪资源分配的需求,对高威胁任务的执行优于传统方法,具有一定的优越性。

Aimed at the resource scheduling problem of phased array radar in multiple target tracking, this paper proposes a task scheduling algorithm based on modified priority. The algorithm introduces the threat of the target to radar into the design of the target task priority. Firstly, the target threat degree is defined. A method that combines comprehensive decision-making of information entropy with subjective weighting is used to calculate the target threat degree in accordance with various parameters of the target and radar. And then, the algorithm synthesizes planning of the target threat degree, the priority of function mode of the task and the deadline of the task to obtain the comprehensive priority. Finally, the calculation process of target threat degree and task scheduling are simulated. The simulation results indicate that the calcula- tion results of target threat degree conform to the demand for tracking resource distribution in different target threat degrees of targets, and the algorithm has a certain superiority for executing high threat tasks, compared with the traditional algorithm.