基于甚高频数据交换系统的船舶编队通信网络最优路由方案

甚高频数据交换系统(VHF data exchange system,VDES)是国际海事组织(International Maritime Organization,IMO)主导的e-航海战略与水面自主航行船舶的基本通信方式之一,计划2021年左右发布正式技术标准;其可提供船-船之间自组织高速数据交换,将有效推进船舶编队通信联网技术发展.为此,在分析海上真实船舶运动特征基础上,提出了一种船舶编队群组移动模型.以此为基础,研究了船舶编队通信网络特征,重点对基于VDES联网编队的自组织网络路由协议性能进行了仿真分析.结果 表明,相对DSR(dynamic source routing)协议及DSDV(destination-sequenced distance-vector)协议,AODV(Ad Hoc on-demand distance vector)协议在路由开销及分组投递率方面具有显著的性能优势,能更好地适应基于VDES的船舶编队通信网络,满足船舶编队通信应用需求.

Research on Optimal Routing Scheme of Ship Formation Communication Network Based on VDES

VHF Data Exchange System (VDES) is one of the basic communication methods of IMO leading e-navigation strategy and surface autonomous navigation ships. It is planned to release the formal technical standard around 2021. The self-organized high-speed data exchange between ships is provided by it and the development of ship formation communication networking technology will be effectively promoted. Therefore, based on the analysis of the real Marine ship movement characteristics, in this paper, a ship formation group movement model was proposed. On this basis, the characteristics of the ship formation communication network were studied, and the performance of the self-organizing network routing protocol based on VDES formation was simulated and analyzed. The results showed that the AODV protocol has a significant performance advantage over DSR (Dynamic Source Routing) and DSDV (Destination-sequenced Distance-vector) in terms of Routing overhead and packet delivery rate, and it could better adapt to the VDES based ship formation communication network and meet the application demand of ship formation communication.