基于三维抛物方程的路径损耗预测模型

Prediction Model of Radio Wave Propagation Loss Based on Three-Dimensional Parabolic Equation

为实现通信网络的优质覆盖和基站选址的优化布局,研究城市环境中电波传播的路径损耗预测模型尤为必要。文章通过STL数据的三维重建技术,结合K-means聚类算法对传播环境进行电磁建模,采用三维抛物方程解算电波传播过程,形成了路径损耗预测模型。仿真结果与经验模型相比,表明本模型不仅能准确地反映出电波的衰减趋势,还可预测环境反射、散射造成的多径衰落;街道场景下本模型的仿真结果和实测路径损耗基本吻合,验证了本文模型的正确性。

In order to realize the high-quality coverage of communication network and the optimal layout of base station location,it is particularly necessary to study the path loss prediction model of radio wave propagation in urban environment In this paper,through the three-dimensional reconstruction technology of STL data,combined with K-means clustering algorithm,the propagation environment is modeled,and the three-dimensional parabolic equation is used to solve the radio wave propagation process,forming a path loss prediction model.The simulation results show that compared with the empirical model,the proposed model can not only accurately reflect the attenuation trend of radio waves,but also predict the multi-path fading caused by environmental reflection and scattering.The simulation results of radio wave propagation in street scene are basically consistent with the measured path loss,which verifies the correctness of the model in this paper.