该文提出了一种基于射线跟踪方法的射线管分裂新技术——确定性射线管分裂法,同时给出该方法的解析分裂格式和完备性说明。仿真计算证明,在相同预测精度条件下,与两种已知的射线管方法相比,该方法具有花费CPU时间较少、计算效率较高的优点。用该方法在室内环境中进行接收功率预测,仿真结果与公开发表的文献结果相比,一致性良好。 In this paper, we propose a new ray tube splitting method based on ray tracing method, deterministic ray tube splitting method, and give the analytical splitting format and completeness description of this method. Simulation results show that this method has the advantage of less CPU time and higher computational efficiency than the two known methods of ray tube under the same prediction accuracy. The method is used to predict the received power in an indoor environment. The simulation results are in good agreement with the published literature results.