在传统的电波传播预测模型的基础上，提出了一种基于射线跟踪法的改进模型。
An improved ray-tracing model based on traditional microwave propagation prediction models is presented.
本文给出了一种新型的快速的射线追踪方法——有效可见区域辐射源树射线跟踪法。
In this paper, we present a new rapid ray tracing method -available visible area radiant point tree ray searching.
采用射线跟踪法，通过模拟计算得到最优光源的长度和最优长度时，在灯前测试屏上照度分布。
Based on a method of bi-directional light tracking, it works out the best length of lamp-source and the distribution of lamp on the screen with this lamp-source.
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