Variable scheduling interval task scheduling for phased array radar

Abstract

A scheduling algorithm is presented aiming at the task scheduling problem in the phased array radar. Rather than assuming the scheduling interval (SI) time, which is the update interval of the radar invoking the scheduling algorithm, to be a fixed value, it is modeled as a fuzzy set to improve the scheduling flexibility. The scheduling algorithm exploits the fuzzy set model in order to intelligently adjust the SI time. The idle time in other SIs is provided for SIs which will be overload. Thereby more request tasks can be accommodated. The simulation results show that the proposed algorithm improves the successful scheduling ratio by 16%, the threat ratio of execution by 16% and the time utilization ratio by 15% compared with the highest task mode priority first (HPF) algorithm.