电波科学学报2017，Vol.32Issue(6)：674-680,7.DOI:10.13443/j.cjors.2017061901
基于LiDAR点云的地理电磁环境建模及仿真研究
Modeling and simulation of geographic electromagnetic environment based on LiDAR point cloud
摘要
Abstract
In the complex geographic environment,the irregular terrain and diversified ground surface cover will cause a greater impact on electric wave propagation.With a view that the electromagnetic modeling focusing on the digital elevation model lacks the information about ground surface cover,the paper studies the modeling in geographic electromagnetic environment based on LiDAR point cloud.It processes the LiDAR point cloud data with grid transformation using the mathematical morphological method,successively extracts information about ground objects and terrain from the point cloud data,then gives various ground objects the matched electromagnetic parameters,obtains a more accurate model in the geographic electromagnetic environment,and makes a simulation analysis of the characteristics of electric wave propagation in the environment of real ground surface cover through the parabolic equation model.Compared with the traditional electromagnetic modeling based on digital elevation model,the proposed modeling method can obtain the information of terrain and ground features,can more comprehensively consider the impact of ground objects on the characteristics of electric wave propagation,and thus the prediction results are more accurate and effective.关键词
LiDAR/抛物方程模型/点云分类/电磁建模/电波传播Key words
LiDAR/parabolic equation model/point cloud classification/electromagnetic modeling/radio wave propagation分类
信息技术与安全科学引用本文复制引用
王亚伟,钟选明,周亮,廖成..基于LiDAR点云的地理电磁环境建模及仿真研究[J].电波科学学报,2017,32(6):674-680,7.基金项目
资助项目:国家自然科学基金(61771407) （61771407）
