【摘 要】
：
针对现有射线跟踪算法效率低下的问题,利用虚拟源思想,设计了一种基于虚拟墙的射线跟踪算法.首先,通过将处于同一平面的墙面合并为“虚拟墙”,降低了算法搜索过程中墙面的遍
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针对现有射线跟踪算法效率低下的问题,利用虚拟源思想,设计了一种基于虚拟墙的射线跟踪算法.首先,通过将处于同一平面的墙面合并为“虚拟墙”,降低了算法搜索过程中墙面的遍历次数.在此基础上,通过设计“透光区”、“光扇区”等有效性判决条件,完成节点有效性的判决,避免了无效节点的混入,减少了计算复杂度.最后,利用深度优先搜索算法完成虚拟源树状结构的建立,无须重复遍历即可获得发射点到接收点的全部有效路径.仿真结果表明,该算法路径损耗的预测精度随着树遍历深度的增加而提高,同时降低了算法复杂度.
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