低轨卫星通信系统中快速终端的切换技术  

Handover technique of fast-moving terminal in LEO satellite communication systems

作　　者：李庆[1] 朱立东[1] 吴诗其[1] 

机构地区：[1]电子科技大学通信抗干扰技术国家级重点实验室,四川成都610054

出　　处：《通信学报》2006年第5期120-125,129,共7页Journal on Communications

摘　　要：提出了低轨卫星通信系统(LEO)中两种支持快速终端的切换算法,详细介绍了系统模型的结构,以全球星系统和铱系统为例,通过仿真,分别对“最短路径优先”和“最长覆盖时间”2种算法下快速终端的切换时延情况进行统计和比较,得到了有一定参考价值的结果。A LEO communication system supporting fast-moving terminals was studied. Based on this system, two handover algorithms were proposed： the maximum covered-time algorithm and the shortest-path-first algorithm in the case of Globalstar and Iridium. In order to find out their different effects on the system capability in different environment, the two handover algorithms are calculated and compared through simulation and analysis.

关 键 词：卫星通信 快速终端 低轨 切换 

分 类 号：TN927[电子电信—通信与信息系统]