OPNET Based Low Earth Orbit Satellite Network Simulation Platform 基于OPNET的低轨卫星网络仿真平台
The application of spoofing technology in TCP protocol at gateways of satellite earth stations is able to increase the running efficiency of TCP protocol and transfer speed of data steams on satellite communication network for WAN using satellite links as communication channels. 对于采用卫星通信链路作为传输信道的计算机广域网,在卫星站网关上使用TCP协议欺骗技术,能够显著提高TCP/IP协议在卫星通信网上运行的效率。
The paper discusses technical innovation and development of China satcom industry in terms of communication satellite, orbit and frequency spectrum resources, earth station equipment and satellite communication network. Then, it puts forward some strategic considerations and detailed suggestions. 在通信卫星、轨位和频谱资源、地球站设备和卫星通信网等方面,对中国卫星通信行业的技术创新和行业发展,提出了一些策略性设想和具体化建议。
The mobile satellite communication is not only for telephone, but also for multimedia, with bit rate of 2 Mb/ s. Through the gateway stations on the earth, mobile satellite network and terrestrial fixed network would be integrated, to realize the global personal communication. 移动卫星网可通电话,可进行多媒体通信,速率为2Mb/s,并通过地面信关站,与陆地固定通信网结合一起,实现全球个人通信。
Low Earth Orbit satellite network has become the research hotspot due to its advantages of small transmission loss and low end-to-end delay characteristic. 低轨卫星网络因其空间损耗小,传输时延低等特点,逐渐成为了当前的研究热点。