Dynamic priority scheduling method for the air-defence phased array radar

摘要

A novel scheduling algorithm was proposed aiming at the time resource allocation in the air-defence phased array radar. The algorithm colligated the threat density of the target and the deadline of the task to calculate the task synthetic priority. Through establishing the threat model of targets and designing the dynamic priority table, the threat level of the target, the task dwell time and the deadline of the task were colligated to calculate the task synthetic priority. Thereby all radar task synthetic priorities were dynamic, and the most important and urgent task could be prior scheduled. In addition, the notion of the threat ratio of execution was put forward to reflect the algorithm performance on scheduling the important tasks. The simulation results show the significant improvement of the proposed algorithm compared with the earliest deadline first algorithm.