无线电波传播中的随机射线及其应用

Stochastic rays for modeling radio wave propagation and its applications

对建模无线电波传播的随机射线进行了详细的阐述,从随机网格信道引出随机射线的概念,介绍了随机射线的产生背景和分类,并给出一种产生随机射线的数学模型随机桥过程。使用最大熵原理得到发生k次反射随机射线的概率分布。最后介绍使用随机射线建模超宽带室内信道的多径传播轨,在此基础上可以得到信道特性建模的基本随机变量,以及无线电波传播的概率模型等应用。

Stochastic rays for modeling radio wave propagation are presented in detail. The concept of stochastic rays is introduced from that of random lattice channels, and the background and categories stochastic rays are also introduced. Meanwhile, stochastic bridge processes are presented as a kind of method to generate stochastic rays. The maximum entropy principle is utilized to calculate the probability of stochastic rays undergoing k reflections. Finally, the applications of stochastic rays are investigated： they can be used to model the trajectories of multi - path propagation, based on which the basic random variables are constructed. The probabilistic model of electromagnetic wave propagation is also constructed.