摘要
由于非静止轨道中移动卫星系统具有多波束天线和多颗卫星的星座设计，因而存在波束或卫星间的切换。文中分析了切换中断概率与轨道高度、波束半径、平均通话时长、每波束信道数及多星选择策略的关系，得到了一些理论结果。文中对理论结果进行了数值计算与计算机仿真，得出的结论对设计移动卫星系统有参考价值。
There are handovers among cells and satellites due to the use of the multibeam antenn and the design of multi-satellite constellation for the nongeostationary orbit mobile satellite system.This paper analyses the average handover outage probability and the relationship between outage probability and orbitheight,beam zone radius and average talk duration as well as the number of channel per-cell.The theoriticalresults are obtained and the numerical calculation is Carried out.Finally,the conclusions are helpful for thedesign of mobile satellite communication systems.
出处
《电子科技大学学报》
EI
CAS
CSCD
北大核心
1995年第6期567-570,共4页
Journal of University of Electronic Science and Technology of China
基金
国家科委863高科技项目和高校博士点基金
关键词
移动卫星通信
非静止轨道
切换
中断概率
mobile satellite communication
nongeosationary orbit
handover
outage probability
