Geometric modeling method based on the digital elevation model in ray tracing

被引：0
|
作者：
Guan X. [1 ]
Guo L. [1 ]
Wang Y. [1 ]
Li Q. [2 ]
机构：
[1] School of Physics and Optoelectronic Engineering, Xidian Univ., Xi'an
[2] China Research Institute of Radio Wave Propagation, Qingdao
来源：
Xi'an Dianzi Keji Daxue Xuebao/Journal of Xidian University | 2018年 / 45卷 / 03期
关键词：
Digital elevation model; Digital map; Macro-cellular environment; Radio propagation; Ray tracing;
D O I：
10.3969/j.issn.1001-2400.2018.03.007
中图分类号：
学科分类号：
摘要：
In order to solve the problem of data sharing between different formats of a digital map, this paper introduces the modeling ideas and storage formats of the traditional digital map and digital elevation model (DEM), on the basis of which the algorithms for conversion between them are given by a flow diagram. Its feasibility and correctness are verified by a simulation example, and then the effect of the resolution of the DEM on the vertex error of each building is analyzed. Besides, a vertically polarized dipole antenna in a typical macro-cellular environment is simulated by using the DEM-based ray tracing model, and the results of power coverage are shown in an intuitive way, which extends the applicability of the ray tracing model and provides a new idea for the study of radio propagation in urban macro-cellular scenes. © 2018, The Editorial Board of Journal of Xidian University. All right reserved.
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页码：35 / 39and135
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