2.5 GHz城市环境电磁态势的计算与补偿  

Calculation and Compensation in Urban Environment Electromagnetic Situation at 2.5 GHz

作　　者：赵延安 侯鹏[2] 王大鹏 王楠[2] 张玉[2] ZHAO Yan-an;HOU Peng;WANG Da-peng;WANG Nan;ZHANG Yu(National Radio Monitoring Center Shaanxi Monitoring Station,Xi’an 710200,China;Shaanxi Key Laboratory of Large Scale Electromagnetic Computing,Xidian University.Xi’an 710071,China)

机构地区：[1]国家无线电监测中心陕西监测站,西安710200 [2]西安电子科技大学陕西省超大规模电磁计算重点实验室,西安710071

出　　处：《微波学报》2020年第2期94-97,共4页Journal of Microwaves

基　　金：国家重点基础研发计划(2017YFB0202102);中国博士后科学基金(2017M613068);国家重点研发计划(2016YFE0121600)。

摘　　要：复杂城市空间的电磁态势分布可以通过电磁场数值计算的方法进行预测。文章使用矩量法(MOM)结合一致性几何绕射理论(UTD)的方法对2.5 GHz频率下某小区环境中的电磁态势进行了仿真计算以及实际测量。场景中的树木结构在此频率下显示出比较强烈的波动性,对电磁仿真计算结果产生了不可忽略的影响,文中将其对仿真计算结果的影响进行了单独建模仿真,给出其产生影响的经验值,对仿真结果进行修正。修正结果与测量结果对比证明该经验值在该频率下可以有效补偿计算结果的缺失。Computational electromagnetic can be used to predict electromagnetic potential distribution of complex urban space with accuracy and speed.The electromagnetic distribution in an urban environment at 2.5 GHz is calculated by combing MOM with UTD method in this paper.The tree structures show strong wave properties under this frequency,which leads to a non-negligible influence on the calculated results.The tree structure is constructed and simulated alone to present an empirical value in order to modify the calculated results.The comparison between the modified results and the measured results shows that the empirical value can effectively compensate for the lack of the calculated results at this frequency.

关 键 词：电磁态势分布 矩量法结合一致性几何绕射理论(MOM-UTD) 2.5GHz 树木补偿值 

分 类 号：TN929.5[电子电信—通信与信息系统] O441[电子电信—信息与通信工程]