电大山区地物环境中电波传播的电磁计算
Electromagnetic calculation of radio wave propagation in electrically large mountainous terrain environment
- 西安电子科技大学学报 2024年51卷第1期 页码：21-28
- 作者机构：
1. 西安电子科技大学 电子工程学院,陕西 西安 710071
2. 国家无线电检测中心陕西监测站,陕西 西安710200
- 作者简介：
[ "王楠(1981—),男,副教授,E-mail:[email protected];" ]
[ "刘俊志(1997—),男,西安电子科技大学硕士研究生,E-mail:[email protected]; " ]
[ "陈贵齐(1992—),男,西安电子科技大学硕士研究生,E-mail:[email protected];" ]
[ "赵延安(1982—),男,高级工程师,E-mail:[email protected]; " ]
[ "张玉(1978—),男,教授,E-mail:[email protected]" ]
- 基金信息：国家自然科学基金联合基金重点项目(U2241206)
DOI：10.19665/j.issn1001-2400.20230210
中图分类号： TN82纸质出版日期：2024-1-20，
网络出版日期：2023-8-30，
收稿日期：2022-11-22，
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王楠, 刘俊志, 陈贵齐, 等. 电大山区地物环境中电波传播的电磁计算[J]. 西安电子科技大学学报, 2024,51(1):21-28.
Nan WANG, Junzhi LIU, Guiqi CHEN, et al. Electromagnetic calculation of radio wave propagation in electrically large mountainous terrain environment[J]. Journal of Xidian University, 2024,51(1):21-28.
王楠, 刘俊志, 陈贵齐, 等. 电大山区地物环境中电波传播的电磁计算[J]. 西安电子科技大学学报, 2024,51(1):21-28. DOI： 10.19665/j.issn1001-2400.20230210.
Nan WANG, Junzhi LIU, Guiqi CHEN, et al. Electromagnetic calculation of radio wave propagation in electrically large mountainous terrain environment[J]. Journal of Xidian University, 2024,51(1):21-28. DOI： 10.19665/j.issn1001-2400.20230210.
摘要
在无人驾驶与无人机等新兴行业中
信号覆盖范围的要求较高
不仅仅在城市
在人迹罕至的山地、沙漠、森林中也需要无线信号的覆盖才能真正完成远程操控
这些地区更多需要考虑的是地势变化对电磁传播所带来的影响。计算电磁学中的一致性几何绕射理论方法是分析电大环境电磁问题的有效方法
使用计算电磁学的方法研究电磁波在山区地物环境中的传播规律。给出了一种建立不规则地形模型的新方法
可以通过数字高程的网格数据生成电磁算法可用的三次多项式曲面
使用多个立方曲面对不规则地形进行拼接
使用平均均方根误差验证模型数据的准确性。基于所得的地形数据
完成了并行的几何光学算法
并对区域电磁场的分布进行了仿真计算。选取了实际山区地物环境进行了实地测量
测量结果与仿真结果对比趋势一致
验证了该方法在非规则地形中电磁波传播分析中的有效性。考虑环境电磁计算的规模
建立了相应的并行策略
100核测试的并行效率可以保持在80%以上。
Abstract
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%.
关键词
电大山区地物环境电波传播数字高程分形建模几何光学并行计算
Keywords
electrically large mountainous terrain environmentradio wave propagationdigital elevation modelfractal modelinggeometric opticsparallel computing
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