用于微蜂窝电波传播预测的二维射线跟踪模型

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。该模型能用于由任意形状的建筑物和街道所组成的复杂传播环境中 ,只要这些建筑物和街道能用向量描述。由于该模型是从镜像法得到的 ,因此它和镜像法一样具有较高的计算效率 ;另外它能够找到从发射机到接收机之间的所有传播路径 ,因此有较高的精度。把该模型预测结果与测量结果以及另外一个模型预测结果进行了比较 ,结果表明该模型是一个较好的模型。

A Two-Dimension Ray-Tracing Model for Microcellular Wave Propagation Prediction

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.This model is developed for quasi-three-dimensional environment and can be applied to any complex propagation environment which is composed of the buildings and streets of arbitrary shapes as logn as these buildings and streets can be represented by vectors.This model is derived from image method,so it has very high computation efficiency as image method.Moreover,it can find all propagation paths from a transmitter to a receiver,so it has high accuracy.There are some comparisons among this model prediction results,measurement results and another model prediction results in the same urban propagation environment,which show that this model is a prominent model.