【作者】 王俊；

【导师】 刘人杰；

【作者基本信息】 大连海事大学 ， 通信与信息系统， 2001， 硕士

【摘要】 本文通过对我国VTS现状和发展趋势的分析，以建设全国VTS信息网络系统为主要研究内容，重点讨论了其中的信息访问系统与信息传输系统。对于信息访问系统设计了基于Browser/Server(浏览器朋臣务器)模式的WEB网站，并在此基础上开发了对VTS系统的无线网络应用的扩展——WAP服务；对于信息传输系统设计采用了基于IP组播方式的传输手段。 论文内容包括： (1)VTS中心Intranet网络的建设。通过采用Internet的协议标准和全球网World Wide Web技术与设备来构筑可提供WEB信息服务与应用、自成体系的企业内部网络。 (2)广域网互连。通过广域网(WAN)的互连，使各水域VTS中心联合为VTS大交管网络。 (3)VTS信息网站系统。基于Browser/Server模式VTS信息网络的WEB网站系统的实现，包括网站的建设，安全控制以及移动WAP访问。 (4)VTS网络系统中的信息访问与数据传输。全国各VTS中心采用广域网互连组建“大交管”系统，对于信息的访问使用基于B/S模式的WEB方式，统一信息访问接口；同时，考虑到数据传输的特点与网络性能，分析了基于IP协议的网络传输系统中基本的三种数据传输方式：IP单播(Unicast)，IP广播(Broadcast)和IP组播(Multicast)。 网络化是VTS的发展趋势。本论文的意义是通过建设全国VTS信息网络，统一信息访问的接口，优化数据的传输，满足VTS网络化的需要。更多还原

【Abstract】 The main content of this paper is to construct a VTS information network on the basis of analysing the current situation and development trend of domestic VTS system. The information access and transmission system are the emphases of this paper. In order to access information we design a WEB site based on the Brower/Server model, and at the same time, we develop the WAP service, which is the expansion of wireless network application in the VTS system. The transmission method based on IP Multicast is used in information transmission system.The content of this paper is as follows:(1) Construction of Intranet network of VTS centers. Construct application offering the WEB information service and Intranet in enterprises, which make use of Internet protocols and the technique and equipment of World Wide Web.(2) Interlinkage of WAN. Using interlinkage of WAN, connect each VTS center with a countrywide VTS network system.(3) System of VTS information WEB site. Realize WEB station system based on Brower/Server model VTS information network, which includes the construction of WEB site, the control of security and the mobile access by WAP.(4) Information access and data transmission in VTS network system. Using the Interlinkage of WAN, each VTS center in countrywide can build a national VTS. Accessing information the method of WEB is used based on B/S model in order to unite the interfaces of information service. At the same time, considering the characteristics of data transmission and network performance, we discuss three essential methods of data transmission in the network transmission system based on IP protocol, IP Unicast, IP Broadcast and IP Multicast.更多还原