基于反障碍距离加权的复杂场景电磁频谱地图构建方法  

Radio Environment Map Construction Method for Complex Scenes Based on Inverse Obstacle Distance Weighted

作　　者：陶诗飞 吴昱江 罗佳 丁浩 王元贺 TAO Shifei;WU Yujiang;LUO Jia;DING Hao;WANG Yuanhe(School of Electronic and Optical Engineering,Nanjing University of Science and Technology,NanJing 210094,China;National Key Laboratory of Electromagnetic Space Security,Chengdu 610036,China;Engineering Training Center,Nanjing University of Science and Technology,NanJing 210094,China)

机构地区：[1]南京理工大学电子工程与光电技术学院,南京210094 [2]电磁空间安全全国重点实验室,成都610036 [3]南京理工大学工程训练中心,南京210094

出　　处：《电子与信息学报》2024年第8期3210-3218,共9页Journal of Electronics & Information Technology

基　　金：电磁空间安全全国重点实验室开放基金。

摘　　要：针对复杂场景中存在电磁波不可穿透的障碍物导致电磁频谱地图(REMs)构建性能不佳、反距离加权(IDW)算法受限于插值邻域的人工选择等问题,该文提出一种基于Voronoi图的反障碍距离加权(VIODW)的复杂场景电磁频谱地图构建算法。该算法通过创建包含障碍物的Voronoi图,为每一个待插值点自适应选定插值邻域用于电磁频谱数据构建,并利用任意角度路径寻优(ANYA)算法计算得到待插值点与插值邻域内每个监测站点之间的障碍距离,最后以障碍距离的反幂次作为权重加权获得待插值点处的电磁频谱数据,实现高精度的复杂场景电磁频谱地图构建。理论分析和仿真结果表明,该方法具有良好的构建精度,能够准确拟合出电磁波在复杂场景中的功率分布情况,为复杂场景下电磁频谱地图高精度构建提供了一种有效方法。Addressing the issues of inadequate performance in constructing Radio Environment Maps(REMs)in complex scenarios due to non-penetrable obstacles for electromagnetic waves,and the arbitrary selection of interpolation neighborhoods imposed by Inverse Distance Weighted(IDW),a Voronoi-based Inverse Obstacle Distance Weighted algorithm(VIODW)is proposed in this paper.This algorithm adaptively defines interpolation neighborhoods for each interpolation point by creating Voronoi diagrams incorporating obstacles for numerical computation.Then,using the ANY-Angle(ANYA)Algorithm to calculate the obstacle distance between the interpolation point and each monitoring station within the interpolation neighborhood.Finally,by calculating the weighted mean with the inverse power of the obstacle distance as the weight,the value at the point is obtained,achieving high-precision construction of REMs in complex scenarios.Both theoretical analysis and simulation results demonstrate that this method offers excellent construction accuracy and can accurately model the power distribution of electromagnetic waves in complex scenarios.Hence,it provides an effective approach for high-precision REM construction in complex scenarios.

关 键 词：电磁频谱地图 反距离加权插值 障碍距离 复杂场景 

分 类 号：TN97[电子电信—信号与信息处理]