面向宽带移动无定形小区的海域无线信道建模研究

It becomes more and more important for our country to enhance the capacity of the marine environment monitoring, and safeguard national maritime security by means of information technology in recent years. It is expensive to implement the shore - ship and ship - ship communication by means of marine satellites. With the development of maritime aircraft technology such as unmanned aerial vehicles (UAV) and hot air balloon, it is feasible to build high-speed data link through stratospheric communication platform - ship communication. Channel model is a key factor in the marine broadband mobile communication, so it is significant to study the modeling of this kind of wireless channel. Compared to the research and application of terrestrial propagation model, marine broadband mobile communication channel modeling is still quite weak. The research of this project, facing broadband mobile amorphous cell, is about sea surface stratospheric communication platform - ships broadband mobile communication channel modeling and evaluation. It's aim is to complete the analysis and numerical simulation of marine communication electromagnetic environment, and to implement the modeling of stratospheric communication platform - Ship broadband mobile communication channel. It is hoped that the research can make some contributions to build offshore stratospheric communication platform, so as to reduce the cost of broadband communications over the ocean, enhance the capabilities of ships to send and receive high-speed data, and optimize the maritime mobile communication signal coverage.

利用信息技术提升海洋环境监测能力、维护国家海洋安全已成为我国近年来相当重视的课题。而通过海事卫星完成船舶与陆地、船舶与船舶的通信，代价高昂。随着近年来海上飞行器技术的发展，利用无人机或热气球等构建升空通信平台-船舶高速数据链路已具备可行性。而信道模型作为海域宽带移动通信的关键因素，其研究意义重大。鉴于海域宽带移动通信信道建模的研究相比于陆地传播模型的研究和应用还相当薄弱，本课题面向海洋表面升空通信平台-船舶形成的宽带移动无定形小区，完成海洋通信电磁环境的充分分析与精细化模拟，并以此为基础实现对海洋表面升空平台-船舶宽带移动通信信道的建模和评估。为我国搭建海上升空通信平台做基础性研究，以期降低海上宽带通信成本，提高船舶高速数据收发能力，优化海上无线通信信号覆盖。

鉴于海域宽带移动通信信道建模的研究相比于陆地传播模型的研究和应用还相当薄弱，本项目面向海洋表面升空通信平台-船舶形成的宽带移动无定形小区，研究海洋通信电磁环境的充分分析与精细化模拟，并以此为基础实现对海洋表面升空平台-船舶宽带移动通信信道的建模和评估。本项目已顺利完成项目计划内容：基于海洋通信电磁环境的数值化描述，设计实现海洋表面射线跟踪与FDTD等确定性信道建模；设计基于无人机和软件无线电通用传输平台（USRP）的海洋通信信道测量系统并以厦门海域为对象建立数据测量平台，采集实测数据；完成瞬态通信信道模型到长时移动传播信道的建模与数据处理；对所建立的模型以实测数据进行验证分析。项目组共完成SCI论文4篇，EI论文10篇，专利16份（授权6份、申请10份），软件著作权3份。本项目为解决海上无线信道测量困难，推进计算电磁学在海域环境的应用，探索在海上无线电信号传播的建模方法，提供了较好的理论参考和应用参考。