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It refers to the usage of satellite network. 并对卫星网络的使用进行了阐述。
The handoff in LEO satellite networks makes TCP protocol retransmit packet blindly,and decline TCP performance. 该文分析了低轨卫星网络中TCP报文盲目重传的原因,采用预切换方法,提出了避免了报文盲目重传路由策略。
Then the functions and key issues of SNE are also discussed based on the features of satellite networks. 本文介绍了SNE的体系结构和设计方案,并针对卫星网络特点讨论了仿真器的功能和关键问题。
Hired to track down Knox,Charlie's Angels set their sights on his rival,Roger Corwin,who owns Red Star Systems,the world's largest telecommunications satellite network. 受雇查寻诺克斯的下落，查理的天使们将目光瞄准了他的竞争对手罗杰·科温，他拥有世界上最大的卫星电信网络--红星系统。
A specialized multicast routing algorithm(MRA) was developed to provide efficient multicast routing in low earth orbit(LEO) satellite networks. 为了解决低轨(low earth orbit,LEO)卫星网络中需要快速高效组播路由协议的问题,提出一种新型LEO卫星IP网络组播路由算法。
Simulations show that the computing complexity and the tree cost are lower than the traditional multicast routing algorithm for LEO satellite networks. 仿真结果表明:与传统的LEO卫星网络组播路由算法相比,该算法具有较低的计算复杂度,生成的组播路由树具有较小的开销。
The network protocols and applications of satellite networks need a reliable laboratorial environment for debugging,testing and evaluation purposes. 为了对卫星网络的协议和应用程序进行调试、验证和性能评估,需要提供可靠的实验环境。
Why are the audio levels on the Euroradio satellite network sometimes very high? （为什么欧洲广播卫星网的音频电平有时会非常高?
Until 2004, he was Senior Vice President of Sony Pictures Television International where he had regional responsibility over Sony's cable and satellite networks in Asia. 他曾是Sony Pictures Television International的高级副总裁直到2004年,主要负责索尼公司亚洲电缆及人造卫星网络。
The performance evaluation on a triple layered LEO/MEO/GEO satellite network is carried out by Petri Net based analysis and software simulation. 基于Petri网模型方法和仿真方法 ;对一种低轨 /中轨 /同步地球轨 (LEO/MEO/GEO)三层卫星网络进行了性能分析 .
The rerouting strategy in the low earth orbit (LEO) quality of service (QoS) satellite networks was proposed to accommodate as much QoS traffic as possible. 提出在低轨(LEO)服务质量(QoS)卫星网络中使用重路由策略容纳尽可能多的QoS业务.
In LEO satellite networks with inter-satellite links, the highly dynamic topology and the limited on-board resources pose special challenges to routing protocol design. 在具有星际链路的低地球轨道(LEO)卫星网络中;高度动态的网络拓扑和受限的星上资源为其路由协议设计带来很大的挑战.
LEO satellite network providing real time multimedia service is a important research direction of satellite communication. 低地球轨道leo(LowEarthOrbit)卫星系统因能够提供多媒体通信服务而成为卫星通信研究的热点 .
The selection of connected degree of MEO satellite and LEO satellite in MEO/LEO double layer satellite networks under certain constellation parameters was analyzed in this paper. 分析了在星座结构参数确定的条件下,中轨道/低轨道(MEO/LEO)双层卫星网络弱连接模型中层间连接度参数的选取。
New dynamic routing algorithm based on MANET technology in the LEO/MEO satellite network[J].Journal on Communications,2005,26(5):50-56. LEO/MEO卫星网络中运用自组网思想的动态路由算法[J].;通信学报;2005;26(5):50-56
Numerous studies have shown that packet reordering is common,especially at wireless and Satellite networks where there are high degree of parallelism and different link speeds. 许多研究表明;在高并行度和不同链接速率的无线网和卫星网中都存在包的重排序.
IP multicast technology is a newly emerged network technology. Satellite network based multicast service is the mainstream service for next generation Internet users. IP组播技术是新兴的网络技术,依托卫星网络的组播业务更是下一代Internet为用户提供的主流服务。
TCP is a reliable point-to-point connection-oriented protocol, but the features of satellite network such as long delay, high bit error, and asymmetric bandwidth can result in very low channel utilization when TCP works over broadband satellite networks. TCP是面向连接的可靠点到点协议,但是由于卫星网络中典型的长延时、高误码率以及非对称带宽的特点,导致TCP通过宽带卫星网络时,信道利用率非常低。
By analysis on simulation systems of satellite networks, models of satellite constellations based on STK and models of satellite protocols based on OPNET are proposed to analyze performances of satellite networks. 由于卫星网络中节点不断运动的特点,卫星网络的拓扑结构随着时间不断的变化,这使得卫星网络与其它通信网络有着很大的区别。在此部分中,通过理论分析和仿真方法对卫星网络的轨道、空间几何结构以及网络拓扑结构等网络体系结构相关的方面进行了深入研究,为进行多层卫星网络的设计提供参考及理论支持。
The paper then explains the dual mode handset DECT/GSM, the hybrid multiple access schemes TDMA/CDMA, and the integration of LEO/MEO satellite networks with terrestrial cellular networks. 阐述当今无绳电话与蜂窝网移动电话的结合使用，有必要制成DECT/GSM双模手持机，新一代蜂窝网的多址方式急需从TDMA与CDMA作出选择，以及为了实现全球个人通信，必须考虑LEO/MEO卫星网，并与陆地蜂窝网统一集成。