Abstract: Ray tracing algorithm needs a great deal of computation time. To improve its efficiency, a parallel ray tracing model, based on the image theory and the framework of .NET Remoting, was proposed in this paper. It scheduled and started the remote computing object, and assigned masks dynamically through computing the completion description with the sub-tree of secondary visual source. The comparison among numeric results indicates that the parallel model considerably reduces the computation time without losing precision. It can be applied to urban microcellular environments with arbitrary building layouts and heights.

Key words: ray tracing, image theory, parallel computing, .NET Remoting

摘要： 针对射线跟踪算法计算量大、耗时长的特点,在镜像法的基础上,利用.NET Remoting应用程序架构,设计了分布式射线跟踪并行计算模型。模型以二次虚拟源每个节点的子树为单位划分任务,通过管理程序调用并启动远程计算对象,根据计算节点的完成情况动态地分配任务。仿真结果表明:在保证场强预测精度的前提下,该模型大大减少了计算机运行时间,适用于城市蜂窝环境中电磁波场强的预测。

关键词: 射线跟踪, 镜像法, 并行计算, .NET Remoting