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.
用射线跟踪法，按射程计算将散射投影在平面图像对应单元的像素点上，得到自然地表的雷达图像模拟。
By using the ray tracing method, the scattering from all cells of scatters under a certain radar resolution is mapped into the image pixels.
该文用射线跟踪法解释了大气波导中无线电盲区的形成原因，导出了计算无线电盲区起始位置的近似公式。
The paper explains the formation of radio holes in atmospheric duct based on ray tracing method, provides approximate expressions to determine the initial position of radio holes.
研究复杂组合体目标后向散射场问题，并对射线跟踪法的典型算法进行改进，以提高计算精度和运算速度。
The radar cross section (RCS) of complex combination objects is studied and the typical algorithm of shooting and bouncing ray (SBR) is improved to enhance the speed and accuracy of computation.
研究复杂组合体目标后向散射场问题，并对射线跟踪法的典型算法进行改进，以提高计算精度和运算速度。
Methods the method of shooting and bouncing rays was used to calculate the RCS and stokes theorem was used to improve the arithmetic.
提出了一种有效的微蜂窝电波传播预测模型，该模型基于射线跟踪法和UTD理论，并使用辐射源树的方法。
This paper presents an effective radio wave propagation prediction model by using radiation sources tree for microcellular environment. This model is based on ray-tracing and UTD.
在二维情形中，基于结合射线跟踪法和时域有限差分法(FDTD)的室内无线传播混合建模方法对于室内无线传播的预测结果与测量结果吻合较好。
In a 2-d structure, the calculation results of a hybrid method, which is based on combing ray tracing and finite-difference time-domain (FDTD) method, agree well with the measurement.
本文在参照了镜像法、射线管法等射线跟踪思想的基础上，提出了一种有效的基于虚拟源树的射线跟踪模型。
Based on Image Theory and tube-tree method, an applicable ray tracing method based on virtual source tree was presented in this paper.
本文在参照了镜像法、射线管法等射线跟踪思想的基础上，提出了一种有效的基于虚拟源树的射线跟踪模型。
Based on Image Theory and tube-tree method, an applicable ray tracing method based on virtual source tree was presented in this paper.
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