DDM的实现策略及网格尺寸的优化  

DDM Implementation Strategy and Optimizing Cell-Size

作　　者：戴忠健[1] 侯朝桢[1] 苏利敏[1] 

机构地区：[1]北京理工大学自动控制系,北京100081

出　　处：《南京航空航天大学学报》2002年第4期364-367,共4页Journal of Nanjing University of Aeronautics & Astronautics

基　　金：国防预研基金资助项目

摘　　要：在研究数据分发管理服务中 ,基于区域的数据过滤和网格的数据过滤机制 ,针对它们的不足 ,并依据仿真的动态性 ,提出一种综合基于网格与区域匹配机制的动态数据过滤机制 ,仿真结果表明 ,该算法能大大减少匹配次数及不相关信息的传输 ,从而节约系统及网络资源 ,较好地实现数据过滤。针对这种数据过滤机制 ,指出合适地选取网格尺寸能进一步优化性能 ,并从最小化开销出发 ,推导出求取网格尺寸最优值的数学方法 。In distributed interactive simulation based high level architecture (HLA), the data distribution management (DDM) data distribution mechanism can efficiently filter the data and forward the data to the federate data,realized by the multicast of the network. The region based filtering mechanism and the grid based filtering mechanism are discussed. According to the dynamic characteristics of simulation, a method is developed to assign multicast group. And a dynamic data filtering mechanism can combines the region based filtering and the grid based filtering mechanisms and their shortages are overcomed. Simulational results show that the mechanism can reduce the amount of matching and the amount of transmitting irrelated data, so the mechanism can save the resources of system and network, realize the data filtering better. Aiming at the mechanism, the grid cell size has a substantial impact on optimizing performance. So a mathematic methed is derived to calculate the optimal grid cell size.

关 键 词：DDM 网格尺寸 优化 高级体系结构 数据分面管理 路径空间 数据过滤 组播通信 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]