一种结合数字高程地图的射线跟踪建模方法

doi:10.3969/j.issn.1001-2400.2018.03.007

西安电子科技大学学报

一种结合数字高程地图的射线跟踪建模方法

关晓伟1;郭立新1;王亚姣1;李清亮2

(1. 西安电子科技大学物理与光电工程学院，陕西西安 710071；
2. 中国电波传播研究所，山东青岛 266107)

出版日期:2018-06-20 发布日期:2018-07-18
通讯作者: 郭立新(1968-)，男，教授，E-mail：lxguo@xidian.edu.cn
作者简介:关晓伟(1991-)，男，西安电子科技大学博士研究生，E-mail：guan_xiaowei2015@163.com
基金资助:
国家自然科学基金创新研究群体科学基金资助项目(61621005)；电波环境特性及模化技术国家重点实验室基金资助项目(201400010)

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

GUAN Xiaowei1;GUO Lixin1;WANG Yajiao1;LI Qingliang2

(1. School of Physics and Optoelectronic Engineering, Xidian Univ., Xi'an 710071, China;
2. China Research Institute of Radio Wave Propagation, Qingdao 266107, China)

Online:2018-06-20 Published:2018-07-18

摘要/Abstract

摘要：

为了解决不同格式的数字地图之间不能进行数据共享的问题，在阐述传统数字地图和数字高程地图的建模思想及数据存储格式后，通过流程图给出了它们之间相互转换的算法，并利用仿真实例验证了转换算法的可行性和正确性，进而分析了在格式转换时数字高程地图的分辨率对各建筑物顶点误差的影响．此外，将数字高程地图作为三维射线跟踪模型的输入，对垂直极化的偶极子天线进行了仿真，并直观地给出了功率覆盖的预测结果，扩展了射线跟踪模型的适用范围，为城市微小区场景下的电波传播特性研究提供了新的思路．

关键词: 数字地图, 数字高程地图, 射线跟踪, 微小区场景, 电波传播

Abstract:

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.

关晓伟;郭立新;王亚姣;李清亮. 一种结合数字高程地图的射线跟踪建模方法[J]. 西安电子科技大学学报, 2018, 45(3): 35-39+135.

GUAN Xiaowei;GUO Lixin;WANG Yajiao;LI Qingliang. Geometric modeling method based on the digital elevation model in ray tracing[J]. Journal of Xidian University, 2018, 45(3): 35-39+135.

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一种结合数字高程地图的射线跟踪建模方法

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

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