摘要
为进一步提高遥感卫星数据传输效率,在现有单用户变速率传输方法的基础上,提出变速率与空间复用相结合的遥感数传技术,通过"最佳终端组"的选择和自适应调制编码方式的设定,实现遥感卫星同时对多个地面终端的并发数据传输,从而提升遥感卫星过境窗口内的数据传输容量;分析与仿真结果显示:结合空间复用技术后,在卫星中心角7.5~5.5度区间内,多用户变速率传输方式的容量较现有单用户变速率方式提高了约60%。
In order to further increase the efficiency of remote sensing data transmission,based on single user variable rate transmission,a remote sensing data transmission technique combining variable rate and spatial multiplexing was proposed. Through ＂best terminal combination ＂ choosing and Adaptive Modulation and Coding（ ACM） setting,concurrent data transmission from a remote sensing satellite to several ground terminals was realized,thus improving the overall transmission capacity during the transit window. Analysis and simulation result shows that： by combining spatial multiplexing,the capacity of multi-user variable rate data transmission during 7. 5 ~ 5. 5 degree central angle intervalis is about 60%higher than the existing single user variable rate data transmission.
作者
丁丹
姜明勇
DING Dan JIANG Ming-yong(Photoelectric Equipment Department, Academy of Equipment, Beijing 101416, China)
出处
《兵器装备工程学报》
CAS
2017年第3期120-124,共5页
Journal of Ordnance Equipment Engineering
基金
国家高技术研究发展计划("863")(2015AA7026085)
关键词
自适应调制编码
空间复用
数据传输
遥感卫星
Adaptive Modulation and Coding（ACM）
spatial multiplexing
data transmission
remote sensing satellite
