Electromagnetic calculation of radio wave propagation in electrically large mountainous terrain environment
In emerging industries such as unmanned aerial vehicles and drones,the signal coverage requirements are high,not only in the city,but in the inaccessible mountains,deserts,and forests also wireless signal coverage is needed to truly complete remote control.These areas need to consider the impact of terrain changes on electromagnetic transmission.The Uniform Geometrical Theory of Diffraction method in Computational Electromagnetic is an effective method to analyze electromagnetic problems in electrically large environments and this paper uses the method of computational electromagnetics to study the propagation of electromagnetic waves in mountainous environments.A new method of constructing an irregular terrain model is presented.The available terrain data can be generated by the cubic surface algorithm,and the irregular terrain is spliced by multiple cubic surfaces.The accuracy of the model data is verified by the mean root mean square error.Based on the topographic data,a parallel 3D geometric optical algorithm is completed,and the distribution of the regional electromagnetic field is simulated.The actual mountain terrain environment is selected for field measurement,and the comparison trend between the measurement results and the simulation results is consistent,which verifies the effectiveness of the method in the analysis of electromagnetic wave propagation in the irregular terrain.Considering the scale of environmental electromagnetic computation,a parallel strategy is established,and the parallel efficiency of 100 cores test can be kept to be above 80％.
万方数据
维普
