Modeling Analysis and Research of Terahertz Wave Propagation Experiment at Sea

IF 3.9 2区 工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC IEEE Transactions on Terahertz Science and Technology Pub Date : 2024-03-20 DOI:10.1109/TTHZ.2024.3379749
Xiangchun Cao;Juan Liu;Jianhong Hao;Qiang Zhao;Bixi Xue;Fang Zhang;Jieqing Fan;Changxing Lin;Zhiwei Dong
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Abstract

In this article, the propagation loss of 0.14 THz signal propagating for 27 km at sea is measured experimentally and compared with the simulation results of model in the International Telecommunication Union-Radiocommunication Sector. The results show that the average difference between the simulated and experimental values of signal received power is −5.2 dB, and all the simulation results overestimate the propagation loss. Considering that evaporation duct is ubiquitous in the marine atmosphere and may affect the propagation characteristics of terahertz wave, a new computational model is proposed. More than half of the simulated values based on this model agree well with the measured data, with an average difference of −1.3 dB, but the maximum difference of a single point reaches −18.6 dB, which is mainly caused by the sensitivity of the model to meteorological parameters. The “waveguide effect” in the evaporation duct environment is further simulated by adjusting the transmit antenna height from 29 to 10 m. At this time, although the atmospheric absorption loss increases by 1 dB on average, the total path loss decreases by 5.4 dB on average, which effectively reduces the propagation loss and makes it possible for the long-range transmission of terahertz wave.
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太赫兹波海上传播实验的建模分析与研究
本文通过实验测量了在海上传播 27 千米的 0.14 太赫兹信号的传播损耗,并将其与国际电信联盟无线电通信部门的模型模拟结果进行了比较。结果表明,信号接收功率的模拟值与实验值的平均差值为-5.2 dB,所有模拟结果都高估了传播损耗。考虑到蒸发管道在海洋大气中无处不在,可能会影响太赫兹波的传播特性,提出了一种新的计算模型。基于该模型的模拟值有一半以上与测量数据吻合,平均相差-1.3 dB,但单点最大相差达-18.6 dB,这主要是由于模型对气象参数的敏感性造成的。通过将发射天线高度从 29 米调整到 10 米,进一步模拟了蒸发管道环境中的 "波导效应"。此时,虽然大气吸收损耗平均增加了 1 dB,但总路径损耗平均减少了 5.4 dB,有效降低了传播损耗,使太赫兹波的远距离传输成为可能。
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来源期刊
IEEE Transactions on Terahertz Science and Technology
IEEE Transactions on Terahertz Science and Technology ENGINEERING, ELECTRICAL & ELECTRONIC-OPTICS
CiteScore
7.10
自引率
9.40%
发文量
102
期刊介绍: IEEE Transactions on Terahertz Science and Technology focuses on original research on Terahertz theory, techniques, and applications as they relate to components, devices, circuits, and systems involving the generation, transmission, and detection of Terahertz waves.
期刊最新文献
2024 Index IEEE Transactions on Terahertz Science and Technology Vol. 14 Table of Contents IEEE Transactions on Terahertz Science and Technology Information for Authors IEEE Open Access Publishing IEEE Microwave Theory and Techniques Society Information
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