基于能量损耗的多径-多跳高频电波在海平面的传播
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摘要
以2018年MCM竞赛A题为基础研究了高频(HF)短波信号在不同传播路径中的能量损耗并建立模型。经过MATLAB仿真分析计算,得到平静海面和动荡海面反射能量随入射角的变化关系,以及船只天线信号损耗与工作频率的关系;求得反射强度低于可用信噪比的最大跳数,以及船舶在动荡海面保持通信行驶的最远距离;对无线电波的实际传播路径长度进行了灵敏度分析,得出了不同的路径长度对接收点信噪比的影响。
In this paper, the energy loss model of HF shortwave signal in different propagation paths is studied on the 2018 MCM Problem A. Using the MATLAB simulation analysis, the relation between the reflected energy with the incident angle is found under the calm sea surface and the turbulent sea surface, and the relationship between the signal loss and the operating frequency of the vessel antenna is found. The maximum number of jumps below the available signal-to-noise ratio is obtained, and the maximum distance that the ship maintains communication on the turbulent sea surface is also found. The sensitivity analysis of the actual propagation path length of radio waves is carried out, and the influence of different path lengths on the signal-to-noise ratio of receiving points is obtained.
In this paper, the energy loss model of HF shortwave signal in different propagation paths is studied on the 2018 MCM Problem A. Using the MATLAB simulation analysis, the relation between the reflected energy with the incident angle is found under the calm sea surface and the turbulent sea surface, and the relationship between the signal loss and the operating frequency of the vessel antenna is found. The maximum number of jumps below the available signal-to-noise ratio is obtained, and the maximum distance that the ship maintains communication on the turbulent sea surface is also found. The sensitivity analysis of the actual propagation path length of radio waves is carried out, and the influence of different path lengths on the signal-to-noise ratio of receiving points is obtained.
引文
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[10] 钟育民,谌明,卢满宏,等.无线电波在再入等离子体中传输的衰减模型及仿真验证[J].遥测遥控,2010,31(2):1-6.
[2] 张晨.天波超视距雷达去电离层相位污染算法研究[D].哈尔滨:哈尔滨工业大学,2013.
[3] 黄芳.海上无线电波传播特性与信道建模研究[D].海口:海南大学,2015:8-11.
[4] 曲贵成,王睿.大气噪声条件下海上短波通信可通性研究[J].舰船电子工程,2009,29(1):92-95.
[5] 张朝柱.海上近距短波通信系统技术研究[D].哈尔滨:哈尔滨工程大学,2002.
[6] 张益强.基于GNSS反射信号的海洋微波遥感技术[D].北京:北京航空航天大学,2008.
[7] 张瑜,李玲玲.低角雷达跟踪时的多路径散射模型[J].电波科学学报,2004,31(1):83-86,91.
[8] 董航,徐池.基于信噪比估算的短波通信辅助决策模型研究[J].通信技术,2014,47(11):1313-1317.
[9] 董玫,赵永波,张守宏.米波段下海面多路径模型研究[J].电子学报,2009,36(6):1373-1377.
[10] 钟育民,谌明,卢满宏,等.无线电波在再入等离子体中传输的衰减模型及仿真验证[J].遥测遥控,2010,31(2):1-6.