非视距信号传播场强特性的分析与研究

宫峰勋; 张英

doi:10.11959/j.issn.1000-0801.2024019

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非视距信号传播场强特性的分析与研究

研究与开发 | 更新时间：2024-06-05

- 非视距信号传播场强特性的分析与研究
- Analysis and research on propagation field strength characteristics of non-line-of-sight signal
- 电信科学 2024年40卷第2期页码：83-95
- 作者机构：
- 作者简介：
  
  [ "宫峰勋（1965- ），男，中国民航大学通信工程系教授、硕士生导师，主要研究方向为电磁辐射与电磁兼容、民航通信导航监视及多源数据融合等" ]
  [ "张英（1999- ），女，中国民航大学通信工程系硕士生，主要研究方向为电磁兼容与无线电" ]
- 基金信息：
  
  科技部重点研发计划项目;The Key Research and Development Program of the Ministry of Science and Technology(2018YFC0809500)
- DOI：10.11959/j.issn.1000-0801.2024019
  中图分类号： TN925
- 网络出版日期：2024-02，
  
  纸质出版日期：2024-02-20
- 稿件说明：
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宫峰勋, 张英. 非视距信号传播场强特性的分析与研究[J]. 电信科学, 2024,40(2):83-95.

Fengxun GONG, Ying ZHANG. Analysis and research on propagation field strength characteristics of non-line-of-sight signal[J]. Telecommunications science, 2024, 40(2): 83-95.
宫峰勋, 张英. 非视距信号传播场强特性的分析与研究[J]. 电信科学, 2024,40(2):83-95. DOI： 10.11959/j.issn.1000-0801.2024019.

Fengxun GONG, Ying ZHANG. Analysis and research on propagation field strength characteristics of non-line-of-sight signal[J]. Telecommunications science, 2024, 40(2): 83-95. DOI： 10.11959/j.issn.1000-0801.2024019.

摘要

为探索机场通信路径中障碍物造成非视距传播产生衍射损耗，对信号场强衰减特性进行了研究。首先，基于ITU-R P.1546中不同地形环境对信号传播的影响，结合Deygout模型构建信号场强组合模型。其次，按障碍物数量分析随障碍物高度变化的接收场强传播特性。仿真结果表明，单障

碍物越高，占据0.6F

菲涅尔区越大，场强越小；双障碍物路径中，高度增加的障碍物经过由次要转为主要障碍物，直到只剩主要障碍物的过程，使场强逐渐衰减。再次，针对场强上升，分析了次要障碍物高度与0.6F

菲涅尔区的关系。最后，调整覆盖场强最小阈值，确定接收设备是否被障碍物遮挡，从而导致信号被屏蔽。上述研究结果可为未来模拟机场各场景下障碍物分布，预测接收机是否因障碍物受干扰或影响场强覆盖范围提供参考依据。

Abstract

In order to explore the diffraction loss caused by non-line-of-sight (NLOS ) propagation caused by obstacles in the airport communication path

the attenuation characteristics of signal field were studied.Firstly

based on the influence of different terrain environments on signal propagation in ITU-R P.1546

a combined signal field strength model was constructed with Deygout model.Secondly

according to the number of obstacles

the propagation characteristics of the received field strength varying with the height of obstacles were analyzed.The simulation results show that the higher the single obstacle is

the larger the Fresnel zone occupying 0.6F

is and the smaller the field strength is.In the dual obstacle path

the obstacle with increased height goes through the process of changing from secondary to main obstacle until only the main obstacle is left

so that the field strength gradually decreases.Thirdly

the relationship between secondary obstacle height and 0.6F

Fresnel zone was analyzed for field strength rise.Finally

the minimum threshold of the covered field strength was adjusted to determine whether the receiving device was blocked by obstacles and the signal was shielded.The above research results can provide a reference for simulating the distribution of obstacles in various airport scenarios in the future

and predicting whether the receiver is interfered by obstacles or affects the field intensity coverage.

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