射线跟踪是一种有效的无线通信电波传播预测方法．基于室内电波传播的特点，提出了一种适合室内环境的“用平面跟踪的结果来解决三维问题”的射线跟踪模型．该模型既有二维跟踪模型的快速，又有三维跟踪模型的高精度．该模型的路径损耗预测结果与实际的测量结果比较，符合较好 Ray tracing is an effective method of radio propagation prediction. Based on the characteristics of indoor radio wave propagation, a ray tracing model “solving the three-dimensional problem by plane tracking” is proposed for indoor environment. This model not only has the fast two-dimensional tracking model, but also has the high accuracy of the three-dimensional tracking model. The model’s path loss prediction results are in good agreement with the actual measurement results