基于蒸发波导的岸船超视距通信传播路径损耗预测方法  

A propagation path loss prediction method of shore-ship beyond-line-of-sight communication based on evaporation duct

作　　者：邹航 罗业超 鹿海州 冯梦婷 晋军 邵尉 刘杨 ZOU Hang;LUO Yechao;LU Haizhou;FENG Mengting;JIN Jun;SHAO Wei;LIU Yang(Army Engineering University of PLA,Nanjing 210007,China)

机构地区：[1]中国人民解放军陆军工程大学,江苏南京210007

出　　处：《通信与信息技术》2025年第2期1-4,共4页Communication & Information Technology

基　　金：江苏省自然科学基金项目(项目编号:BK20231490)资助。

摘　　要：由于地球曲率的限制,微波视距通信距离通常在数十公里内。然而,利用蒸发波导可将通信距离延伸至超视距。设计了一种基于蒸发波导的岸船超视距通信传播路径损耗预测方法。介绍了二维抛物方程(Parabolic Equation,PE)的建立并采用分步傅里叶法(Split-Step Fourier Transform,SSFT)对电磁波场强进行求解,利用天线方向图函数与口径场分布的傅里叶变换求得初始场,并得到传播路径损耗。仿真结果表明,该方法能够在蒸发波导高度、工作频率已知的情况下,实现对岸船超视距通信传播路径损耗的预测。Microwave line-of-sight communication distances are usually within tens of kilometers due to the limitations of the curvature of the Earth.However,the communication distance can be extended to beyond line-of-sight by utilizing evaporating duct.In this paper,an evaporating duct-based propagation path loss prediction method for shore-ship beyond line-of-sight communication is designed.The two-dimensional parabolic equation is introduced to establish and the electromagnetic wave field strength is solved by stepwise Fourier method,and the Fourier transform of the antenna directional map function and the aperture field distribution is used to obtain the initial field and determine the propagation path loss.Simulation results show that the method in this paper can realize the prediction of the propagation path loss of shore-ship beyond line-of-sight communication in the case that the height of the evaporating duct and the operating frequency are known.

关 键 词：蒸发波导 抛物方程 分步傅里叶法 传播路径损耗预测 岸船超视距通信 

分 类 号：TN011[电子电信—物理电子学]