中文摘要：

极化方式是电波传播的重要特性，也是在信道传播特性中的关键要素。文章基于入射及反弹射线／镜像方法（SBR／Image）研究了室内无线电波传播特性，考虑了两次（甚至任意次）反射的极化特性，建立起三维的室内视距模型。通过仿真计算，首先证明了研究极化特性的必要性；然后将仿真结果和已知文献结果对比，两个结果一致性良好，同时验证了本文的正确性。

英文摘要：

The polarization mode is the significant polarization characteristics not only in the radio propagation, but also in the polarization characteristics of channel model. In this paper, the propagation characteristics of indoor wireless radio wave has been studied based on the method of Shooting-and-Bounding Ray/Image （SBR/Image）. Furthermore, the polarization characteristics of twice（ or any times） reflection has been analyzed and the three-dimension indoor Line-of-Sight model has been founded. The prediction of field strength has been done with this model in indoor environment. Firstly, the necessary condition has been proved. Secondly, a good agreement is achieved between the simulated results and the published results and the preciseness has been validated.