基于优先级的气象水文数据处理调度算法研究

针对气象水文数据广播接收系统升级改造后造成接收速度大于存储速度，影响数据接收效率的问题，本文在提出基于文件已接收时间与其价值的 ETV 算法基础上，通过对应急数据处理优先级顺序进行改进，形成基于优先级的气象水文数据处理调度算法并实现。对算法进行仿真实验和实例执行，结果表明，比起原有的顺序调度算法，基于优先级的气象水文数据处理调度算法在性能方面和在及时性方面都有明显的改进。

Research on a Priority Scheduling Algorithm of Processing Meteorological and Hydrological Data

According to the phenomena that receiving speed is faster than memory speed in the meteorological and hydrological data broadcasting receiving system after upgrade which may influence the efficiency of data receiving, a priority scheduling algorithm of processing meteorological and hydrological data has been proposed. Firstly, an ETV (Earliest Time Value) algorithm based on both the received time and the value of the file has been proposed. Then based on this, it has been improved into a priority scheduling algorithm of processing meteorological and hydrological data. The simulation and instance has also been done on the algorithm. Both results show that the priority scheduling algorithm of processing meteorological and hydrological data gets an obviously improvement than the ordinary sequential scheduling algorithm in both performance and timeliness.